WITTER DEAN MULTI MARKET PORTFOLIO L P - 10-Q Quarterly Report

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UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

FORM 10-Q

[X] Quarterly report pursuant to Section 13 or 15(d) of the
Securities Exchange Act of 1934
For the quarterly period ended March 31, 2004 or

[ ] Transition report pursuant to Section 13 or 15(d) of the
Securities Exchange Act of 1934
For the transition period from to________________

Commission File Number 0-17178

DEAN WITTER MULTI-MARKET PORTFOLIO L.P.

(Exact name of registrant as specified in its charter)

Delaware 13-3469595
(State or other jurisdiction of (I.R.S. Employer
incorporation or organization) Identification No.)

Demeter Management Corporation
825 Third Avenue, 9th Fl., New York, NY 10022
(Address of principal executive offices) (Zip Code)

Registrant's telephone number, including area code (212)310-6444

(Former name, former address, and former fiscal year, if changed
since last report)

Indicate by check-mark whether the registrant (1) has filed all
reports required to be filed by Section 13 or 15(d) of the
Securities Exchange Act of 1934 during the preceding 12 months (or
for such shorter period that the registrant was required to file
such reports), and (2) has been subject to such filing
requirements for the past 90 days.

Yes X No___________

Indicate by check-mark whether the registrant is an accelerated
filer (as defined in Rule 12b-2 of the Exchange Act).

Yes No X
DEAN WITTER MULTI-MARKET PORTFOLIO L.P.

INDEX TO QUARTERLY REPORT ON FORM 10-Q

March 31, 2004

PART I. FINANCIAL INFORMATION

Item 1. Financial Statements

DEAN WITTER MULTI-MARKET PORTFOLIO L.P.
STATEMENTS OF FINANCIAL CONDITION

DEAN WITTER MULTI-MARKET PORTFOLIO L.P.
STATEMENTS OF OPERATIONS
(Unaudited)

DEAN WITTER MULTI-MARKET PORTFOLIO L.P.
STATEMENTS OF CHANGES IN PARTNERS' CAPITAL
For the Quarters Ended March 31, 2004 and 2003
(Unaudited)

DEAN WITTER MULTI-MARKET PORTFOLIO L.P.
STATEMENTS OF CASH FLOWS
(Unaudited)

DEAN WITTER MULTI-MARKET PORTFOLIO L.P.
NOTES TO FINANCIAL STATEMENTS
March 31, 2004
(Unaudited)

The unaudited financial statements contained herein include, in
the opinion of management, all adjustments necessary for a fair
presentation of the results of operations and financial condition
of Dean Witter Multi-Market Portfolio L.P. (the "Partnership").
The financial statements and condensed notes herein should be read
in conjunction with the Partnership's December 31, 2003 Annual
Report on Form 10-K.

1. Organization
Dean Witter Multi-Market Portfolio L.P. is a Delaware limited
partnership organized to engage in the speculative trading of
futures and forward contracts on physical commodities and other
commodity interests, including, but not limited to, foreign
currencies, financial instruments, metals, energy, and
agricultural products.

The Partnership's general partner is Demeter Management
Corporation ("Demeter"). The non-clearing commodity broker is
Morgan Stanley DW Inc. ("Morgan Stanley DW"). The clearing
commodity brokers are Morgan Stanley & Co. Incorporated ("MS &
Co.") and Morgan Stanley & Co. International Limited ("MSIL").
The trading manager is Morgan Stanley Futures & Currency
DEAN WITTER MULTI-MARKET PORTFOLIO L.P.
NOTES TO FINANCIAL STATEMENTS (CONTINUED)

Management Inc. ("MSFCM" or the "Trading Manager"). Demeter,
Morgan Stanley DW, MS & Co., MSIL and MSFCM are wholly-owned
subsidiaries of Morgan Stanley.

2. Related Party Transactions
The Partnership's cash is on deposit with Morgan Stanley DW, MS &
Co. and MSIL in futures and forwards trading accounts to meet
margin requirements as needed. Morgan Stanley DW pays interest on
these funds based on the average yield on 13-week U.S. Treasury
bills. The Partnership pays brokerage commissions to Morgan
Stanley DW. Management fees and incentive fees, if any, incurred
by the Partnership are paid to MSFCM.

3. Financial Instruments
The Partnership trades futures and forward contracts on physical
commodities and other commodity interests, including, but not
limited to, foreign currencies, financial instruments, metals,
energy, and agricultural products. Futures and forwards represent
contracts for delayed delivery of an instrument at a specified
date and price. Risk arises from changes in the value of these
contracts and the potential inability of counterparties to perform
under the terms of the contracts. There are numerous factors
which may significantly influence the market value of these
contracts, including interest rate volatility.
DEAN WITTER MULTI-MARKET PORTFOLIO L.P.
NOTES TO FINANCIAL STATEMENTS (CONTINUED)

The market value of contracts is based on closing prices quoted by
the exchange, bank or clearing firm through which the contracts
are traded.

The Partnership's contracts are accounted for on a trade-date
basis and marked to market on a daily basis. The Partnership
accounts for its derivative investments in accordance with the
provisions of Statement of Financial Accounting Standards No.
133, "Accounting for Derivative Instruments and Hedging
Activities" ("SFAS No. 133"). SFAS No. 133 defines a derivative
as a financial instrument or other contract that has all three of
the following characteristics:

1) One or more underlying notional amounts or payment
provisions;
2) Requires no initial net investment or a smaller initial net
investment than would be required relative to changes in
market factors;
3) Terms require or permit net settlement.

Generally, derivatives include futures, forward, swaps or options
contracts, and other financial instruments with similar
characteristics such as caps, floors and collars.

DEAN WITTER MULTI-MARKET PORTFOLIO L.P.
NOTES TO FINANCIAL STATEMENTS (CONTINUED)

The net unrealized gains (losses) on open contracts, reported as a
component of "Equity in futures interests trading accounts" on the
statements of financial condition, and their longest contract
maturities were as follows:

Net Unrealized Gains (Losses)
on Open Contracts Longest Maturities
Exchange- Off-Exchange- Exchange- Off-Exchange-
Date Traded Traded Total Traded Traded
$ $ $
Mar. 31, 2004 603,629 (169,059) 434,570 Dec. 2005 Jun. 2004
Dec. 31, 2003 416,360 17,578 433,938 Mar. 2004 Mar. 2004

The Partnership has credit risk associated with counterparty non-
performance. The credit risk associated with the instruments in
which the Partnership is involved is limited to the amounts
reflected in the Partnership's statements of financial condition.

The Partnership also has credit risk because Morgan Stanley DW, MS
& Co. and MSIL act as the futures commission merchants or the
counterparties, with respect to most of the Partnership's assets.
Exchange-traded futures contracts are marked to market on a daily
basis, with variations in value settled on a daily basis. Morgan
Stanley DW, MS & Co. and MSIL, each as a futures commission
merchant for the Partnership's exchange-traded futures contracts,
are required, pursuant to regulations of the Commodity Futures
DEAN WITTER MULTI-MARKET PORTFOLIO L.P.
NOTES TO FINANCIAL STATEMENTS (CONCLUDED)

Trading Commission ("CFTC"), to segregate from their own assets,
and for the sole benefit of their commodity customers, all funds
held by them with respect to exchange-traded futures contracts,
including an amount equal to the net unrealized gains (losses) on
all open futures contracts, which funds, in the aggregate, totaled
$8,132,182 and $7,954,747 at March 31, 2004 and December 31, 2003,
respectively. With respect to the Partnership's off-exchange-
traded forward currency contracts, there are no daily exchange-
required settlements of variations in value nor is there any
requirement that an amount equal to the net unrealized gains
(losses) on open forward contracts be segregated, however, MS &
Co. and Morgan Stanley DW will make daily settlements of losses as
needed. With respect to those off-exchange-traded forward currency
contracts, the Partnership is at risk to the ability of MS & Co.,
the sole counterparty on all such contracts, to perform. The
Partnership has a netting agreement with MS & Co. This agreement,
which seeks to reduce both the Partnership's and MS & Co.'s
exposure on off-exchange-traded forward currency contracts, should
materially decrease the Partnership's credit risk in the event of
MS & Co.'s bankruptcy or insolvency.

Item 2. MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL
CONDITION AND RESULTS OF OPERATIONS

Liquidity. The Partnership deposits its assets with Morgan
Stanley DW as non-clearing broker, and MS & Co. and MSIL as
clearing brokers in separate futures and forwards trading accounts
established for the Trading Manager, which assets are used as
margin to engage in trading and may be used as margin solely for
the Partnership's trading. The assets are held in either non-
interest bearing bank accounts or in securities and instruments
permitted by the CFTC for investment of customer segregated or
secured funds. Since the Partnership's sole purpose is to trade
in futures and forwards, it is expected that the Partnership will
continue to own such liquid assets for margin purposes.

The Partnership's investment in futures and forwards may, from
time to time, be illiquid. Most U.S. futures exchanges limit
fluctuations in prices during a single day by regulations referred
to as "daily price fluctuations limits" or "daily limits". Trades
may not be executed at prices beyond the daily limit. If the
price for a particular futures contract has increased or decreased
by an amount equal to the daily limit, positions in that futures
contract can neither be taken nor liquidated unless traders are
willing to effect trades at or within the limit. Futures prices
have occasionally moved the daily limit for several consecutive
days with little or no trading. These market conditions could
prevent the Partnership from promptly liquidating its
futures contracts and result in restrictions on redemptions.

There is no limitation on daily price moves in trading forward
contracts on foreign currencies. The markets for some world
currencies have low trading volume and are illiquid, which may
prevent the Partnership from trading in potentially profitable
markets or prevent the Partnership from promptly liquidating
unfavorable positions in such markets, subjecting it to
substantial losses. Either of these market conditions could
result in restrictions on redemptions. For the periods covered by
this report, illiquidity has not materially affected the
Partnership's assets.

There are no known material trends, demands, commitments, events
or uncertainties at the present time that will result in, or that
are reasonably likely to result in, the Partnership's liquidity
increasing or decreasing in any material way.

Capital Resources. The Partnership does not have, nor expect to
have, any capital assets. Redemptions of additional units of
limited partnership interest ("Unit(s)") in the future will affect
the amount of funds available for investment in futures and
forwards in subsequent periods. It is not possible to estimate
the amount, and therefore the impact, of future redemptions of
Units.
There are no known material trends, favorable or
unfavorable, that would affect, nor any expected material changes
to, the Partnership's capital resource arrangements at the
present time. The Partnership does not have any off-balance sheet
arrangements, nor does it have contractual obligations or
commercial commitments to make future payments that would affect
its liquidity or capital resources.

Results of Operations
General. The Partnership's results depend on the Trading Manager
and the ability of the Trading Manager's trading programs to take
advantage of price movements or other profit opportunities in the
futures and forwards markets. The following presents a summary of
the Partnership's operations for the three month periods ended
March 31, 2004 and 2003, and a general discussion of its trading
activities during each period. It is important to note, however,
that the Trading Manager trades in various markets at different
times and that prior activity in a particular market does not mean
that such market will be actively traded by the Trading Manager or
will be profitable in the future. Consequently, the results of
operations of the Partnership are difficult to discuss other than
in the context of the Trading Manager's trading activities on
behalf of the Partnership and how the Partnership has performed in
the past. Past performance is not necessarily indicative of
future results.

The Partnership's results of operations set forth in the
financial statements on pages 2 through 10 of this report were
prepared in accordance with accounting principles generally
accepted in the United States of America, which require the use of
certain accounting policies that affect the amounts reported in
these financial statements, including the following: The
contracts the Partnership trades are accounted for on a trade-date
basis and marked to market on a daily basis. The difference
between their cost and market value is recorded on the Statements
of Operations as "Net change in unrealized profit/loss" for open
(unrealized) contracts, and recorded as "Realized profit/loss"
when open positions are closed out, and the sum of these amounts
constitutes the Partnership's trading revenues. The market value
of a futures contract is the settlement price on the exchange on
which that futures contract is traded on a particular day. The
value of foreign currency forward contracts is based on the spot
rate as of the close of business, New York City time, on a given
day. Interest income revenue, as well as management fees,
incentive fees and brokerage commissions expenses of the
Partnership are recorded on an accrual basis.

Demeter believes that, based on the nature of the operations of
the Partnership, no assumptions relating to the application of
critical accounting policies other than those presently used could
reasonably affect reported amounts.

For the Quarter Ended March 31, 2004
The Partnership recorded revenues including interest income
totaling $479,560 and expenses totaling $147,931, resulting in net
income of $331,629 for the quarter ended March 31, 2004. The
Partnership's net asset value per Unit increased from $1,575.08 at
December 31, 2003 to $1,642.76 at March 31, 2004

The most significant trading gains of approximately 5.3% were
generated in the global interest rate markets from long positions
in European and U.S. interest rate futures during February and
March. During February, global bond prices rallied after central
banks, such as the European Central Bank and U.S. Federal
Reserve, reported no need to raise interest rates due to a lack
of inflation. During March, prices trended higher due to
uncertainty in the global equity markets, disappointing U.S.
economic data and safe haven buying following the terrorist
attack in Madrid. Additional gains of approximately 2.9% were
recorded in the agricultural markets from long futures positions
in corn as growing U.S. exports and heightened demand from Asia
pushed prices higher during the quarter. Elsewhere in the
agricultural markets, gains were experienced from short cotton
futures positions, primarily during March, as prices trended
lower due to rising supply and technically-based selling. In the
metals markets, gains of approximately 1.8% were recorded
throughout the quarter from long futures positions in copper and
aluminum as industrial metals prices trended higher in response
to greater demand from Asia driven by a declining U.S.
dollar. Smaller gains of approximately 0.8% were experienced in
the energy markets, primarily during February, from long futures
positions in crude oil as low market supply, falling inventory
levels and production cut announcements from OPEC caused prices
to increase. A portion of the Partnership's overall gains for the
quarter was offset by losses of approximately 5.8% in the
currency sector from positions in the Japanese yen and Singapore
dollar versus the U.S. dollar. During February, losses were
recorded from long positions in the Japanese yen against the U.S.
dollar as the value of the yen reversed sharply lower after the
elevation of Japan's national security alert and market
intervention by the Bank of Japan, which performed U.S. dollar
buybacks after the release of economic data demonstrating Japan's
improving Gross Domestic Product. Long positions in the Singapore
dollar versus the U.S. dollar recorded losses as the value of the
Singapore dollar weakened in tandem with the value of the yen.
Further losses were incurred during March from newly established
short positions in the Japanese yen against the U.S. dollar as
the yen reversed higher due to speculation that the Bank of Japan
would be relaxing its efforts to weaken the yen in the future.
Short positions in the Singapore dollar experienced losses during
March as its value again moved in sympathy with the yen.
Elsewhere in the currency markets, losses were recorded,
primarily in March, from positions in the euro against the
Japanese yen as the euro experienced significant short-term price
volatility.

For the Quarter Ended March 31, 2003
The Partnership recorded revenues including interest income
totaling $1,521,656 and expenses totaling $418,092, resulting in
net income of $1,103,564 for the quarter ended March 31, 2003.
The Partnership's net asset value per Unit increased from
$1,774.52 at December 31, 2002 to $1,977.17 at March 31, 2003.

The most significant trading gains of approximately 8.7% were
recorded in the energy markets, primarily during January and
February, from long positions in natural gas futures as prices
trended higher in response to prolonged frigid temperatures in the
northeastern and midwestern United States. Additional gains were
recorded from long positions in crude oil futures as prices
increased amid the looming threat of military action against Iraq
and an overall declines in inventories. Gains of approximately
4.3% were recorded in the currency markets, primarily during
January and February, from long positions in the euro versus the
British pound as the pound's value declined due to weak economic
data out of the U.K. and an interest rate cut by the Bank of
England. Additional gains stemmed from long positions in the
Australian dollar and South African rand versus the U.S. dollar as
the value of these currencies increased on the heels of higher
commodity prices. Gains of approximately 2.3% were recorded in
the global interest rate markets from long positions in
Japanese and German interest rate futures as prices trended higher
amid continued uncertainty in the global equity markets and
ongoing demand from investors seeking the safe haven of fixed
income investments. A portion of the Partnership's overall gains
was offset by losses of approximately 0.8% in the agricultural
markets from long positions in soybean futures as prices reversed
in January amid news of increased supply. Elsewhere in the
agricultural markets, losses were recorded from short positions in
coffee futures as prices reversed higher in early January amid a
decrease in Colombian exports.
Item 3.QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET
RISK

Introduction
The Partnership is a commodity pool engaged primarily in the
speculative trading of futures and forwards. The market-
sensitive instruments held by the Partnership are acquired for
speculative trading purposes only and, as a result, all or
substantially all of the Partnership's assets are at risk of
trading loss. Unlike an operating company, the risk of market-
sensitive instruments is inherent to the primary business activity
of the Partnership.

The futures and forwards traded by the Partnership involve varying
degrees of related market risk. Market risk is often dependent
upon changes in the level or volatility of interest rates,
exchange rates, and prices of financial instruments and
commodities, factors that result in frequent changes in the fair
value of the Partnership's open positions, and consequently in its
earnings, whether realized or unrealized, and cash flow. Profits
and losses on open positions of exchange-traded futures and
forwards are settled daily through variation margin.

The Partnership's total market risk may increase or decrease as it
is influenced by a wide variety of factors, including, but not
limited to, the diversification among the Partnership's open
positions, the volatility present within the markets, and
the liquidity of the markets.
The Partnership's past performance is not necessarily indicative
of its future results. Any attempt to numerically quantify the
Partnership's market risk is limited by the uncertainty of its
speculative trading. The Partnership's speculative trading may
cause future losses and volatility (i.e., "risk of ruin") that far
exceed the Partnership's experience to date or any reasonable
expectations based upon historical changes in market value.

Quantifying the Partnership's Trading Value at Risk
The following quantitative disclosures regarding the Partner-
ship's market risk exposures contain "forward-looking statements"
within the meaning of the safe harbor from civil liability
provided for such statements by the Private Securities Litigation
Reform Act of 1995 (set forth in Section 27A of the Securities Act
of 1933 and Section 21E of the Securities Exchange Act of 1934).
All quantitative disclosures in this section are deemed to be
forward-looking statements for purposes of the safe harbor, except
for statements of historical fact.

The Partnership accounts for open positions on the basis of mark
to market accounting principles. Any loss in the market value of
the Partnership's open positions is directly reflected in the
Partnership's earnings and cash flow.

The Partnership's risk exposure in the market sectors
traded by the Trading Manager is estimated below in terms of Value
at Risk ("VaR"). The Partnership estimates VaR using a model based
upon historical simulation (with a confidence level of 99%) which
involves constructing a distribution of hypothetical daily changes
in the value of a trading portfolio. The VaR model takes into
account linear exposures to risk including equity and commodity
prices, interest rates, foreign exchange rates, and correlation
among these variables. The hypothetical changes in portfolio value
are based on daily percentage changes observed in key market
indices or other market factors ("market risk factors") to which
the portfolio is sensitive. The one-day 99% confidence level of
the Partnership's VaR corresponds to the negative change in
portfolio value that, based on observed market risk factors, would
have been exceeded once in 100 trading days, or one day in 100.
VaR typically does not represent the worst case outcome. Demeter
uses approximately four years of daily market data (1,000
observations) and revalues its portfolio (using delta-gamma
approximations) for each of the historical market moves that
occurred over this time period. This generates a probability
distribution of daily "simulated profit and loss" outcomes. The
VaR is the appropriate percentile of this distribution. For
example, the 99% one-day VaR would represent the 10th worst
outcome from Demeter's simulated profit and loss series.

The Partnership's VaR computations are based on the risk
representation of the underlying benchmark for each instrument or
contract and do not distinguish between exchange and non-exchange
dealer-based instruments. They are also not based on exchange
and/or dealer-based maintenance margin requirements.

VaR models, including the Partnership's, are continually evolving
as trading portfolios become more diverse and modeling techniques
and systems capabilities improve. Please note that the VaR model
is used to numerically quantify market risk for historic
reporting purposes only and is not utilized by either Demeter or
the Trading Manager in their daily risk management activities.
Please further note that VaR as described above may not be
comparable to similarly titled measures used by other entities.

The Partnership's Value at Risk in Different Market Sectors
The following table indicates the VaR associated with the
Partnership's open positions as a percentage of total net assets
by primary market risk category at March 31, 2004 and 2003. At
March 31, 2004 and 2003, the Partnership's total capitalization
was approximately $8 million and $10 million, respectively.

Primary Market March 31, 2004 March 31, 2003
Risk Category Value at Risk Value at Risk

Currency (2.11)% (1.53)%
Interest Rate (2.06) (1.16)
Equity (0.13) (0.00)
Commodity (4.47) (1.66)
Aggregate Value at Risk (5.71)% (2.70)%
The VaR for a market category represents the one-day downside risk
for the aggregate exposures associated with this market category.
The Aggregate Value at Risk listed above represents the VaR of the
Partnership's open positions across all the market categories, and
is less than the sum of the VaRs for all such market categories
due to the diversification benefit across asset classes.

Because the business of the Partnership is the speculative trading
of futures and forwards, the composition of its trading portfolio
can change significantly over any given time period, or even
within a single trading day, which could positively or negatively
materially impact market risk as measured by VaR.

The table below supplements the quarter-end VaR set forth above
by presenting the Partnership's high, low and average VaR, as a
percentage of total net assets for the four quarter-end reporting
periods from April 1, 2003 through March 31, 2004.

Primary Market Risk Category High Low Average
Currency (2.79)% (0.80)% (1.90)%

Interest Rate (2.06) (0.08) (1.25)

Equity (0.47) (0.00) (0.20)

Commodity (4.47) (1.89) (2.54)

Aggregate Value at Risk (5.71)% (2.88)% (3.73)%

Limitations on Value at Risk as an Assessment of Market Risk
The face value of the market sector instruments held by the
Partnership is typically many times the applicable margin
requirements. Margin requirements generally range between 2% and
15% of contract face value. Additionally, the use of leverage
causes the face value of the market sector instruments held by the
Partnership to typically be many times the total capitalization of
the Partnership. The value of the Partnership's open positions
thus creates a "risk of ruin" not typically found in other
investments. The relative size of the positions held may cause
the Partnership to incur losses greatly in excess of VaR within a
short period of time, given the effects of the leverage employed
and market volatility. The VaR tables above, as well as the past
performance of the Partnership, give no indication of such "risk
of ruin". In addition, VaR risk measures should be viewed in light
of the methodology's limitations, which include the following:

? past changes in market risk factors will not always result in
accurate predictions of the distributions and correlations of
future market movements;
? changes in portfolio value caused by market movements may
differ from those of the VaR model;
? VaR results reflect past trading positions while future risk
depends on future positions;
? VaR using a one-day time horizon does not fully capture the
market risk of positions that cannot be liquidated or hedged
within one day; and
? the historical market risk factor data used for VaR estimation
may provide only limited insight into losses that could be
incurred under certain unusual market movements.

The VaR tables provided present the results of the Partnership's
VaR for each of the Partnership's market risk exposures and on an
aggregate basis at March 31, 2004 and 2003, and for the four
quarter-end reporting periods from April 1, 2003 through March 31,
2004. VaR not necessarily representative of the Partnership's
historic risk, nor should it be used to predict the Partnership's
future financial performance or its ability to manage or monitor
risk. There can be no assurance that the Partnership's actual
losses on a particular day will not exceed the VaR amounts
indicated above or that such losses will not occur more than once
in 100 trading days.

Non-Trading Risk
The Partnership has non-trading market risk on its foreign cash
balances not needed for margin. These balances and any market
risk they may represent are immaterial.

The Partnership also maintains a substantial portion
(approximately 94% as of March 31, 2004) of its available assets
in cash at Morgan Stanley DW. A decline in short-term interest
rates would result in a decline in the Partnership's cash
management income. This cash flow risk is not considered to be
material.

Materiality, as used throughout this section, is based on an
assessment of reasonably possible market movements and any
associated potential losses, taking into account the leverage,
optionality and multiplier features of the Partnership's market-
sensitive instruments, in relation to the Partnership's net
assets.

Qualitative Disclosures Regarding Primary Trading Risk Exposures
The following qualitative disclosures regarding the Partnership's
market risk exposures - except for (A) those disclosures that are
statements of historical fact and (B) the descriptions of how the
Partnership manages its primary market risk exposures - constitute
forward-looking statements within the meaning of Section 27A of
the Securities Act and Section 21E of the Securities
Exchange Act. The Partnership's primary market risk exposures, as
well as the strategies used and to be used by Demeter and the
Trading Manager for managing such exposures, are subject to
numerous uncertainties, contingencies and risks, any one of which
could cause the actual results of the Partnership's risk controls
to differ materially from the objectives of such strategies.
Government interventions, defaults and expropriations, illiquid
markets, the emergence of dominant fundamental factors, political
upheavals, changes in historical price relationships, an influx of
new market participants, increased regulation and many other
factors could result in material losses, as well as in material
changes to the risk exposures and the risk management strategies
of the Partnership. Investors must be prepared to lose all or
substantially all of their investment in the Partnership.

The following were the primary trading risk exposures of the
Partnership at March 31, 2004, by market sector. It may be
anticipated, however, that these market exposures will vary
materially over time.

Currency. The primary market exposure of the Partnership at March
31, 2004 was to the currency sector. The Partnership's currency
exposure is to exchange rate fluctuations, primarily fluctuations
which disrupt the historical pricing relationships between
different currencies and currency pairs. Interest rate changes,
as well as political and general economic conditions
influence these fluctuations. The Partnership trades a large
number of currencies, including cross-rates - i.e., positions
between two currencies other than the U.S. dollar. At March 31,
2004, the Partnership's major exposures were to euro, Japanese yen
and British pound currency crosses and outright U.S. dollar
positions. Outright positions consist of the U.S. dollar vs. other
currencies. These other currencies include major and minor
currencies. Demeter does not anticipate that the risk profile of
the Partnership's currency sector will change significantly in the
future. The currency trading VaR figure includes foreign margin
amounts converted into U.S. dollars with an incremental adjustment
to reflect the exchange rate risk inherent to the U.S.-based
Partnership in expressing VaR in a functional currency other than
U.S. dollars.

Interest Rate. The second largest market exposure at March 31,
2004 was to the global interest rate complex. Exposure was
primarily to the U.S. interest rate sector. Interest rate
movements directly affect the price of the sovereign bond futures
positions held by the Partnership and indirectly affect the value
of its stock index and currency positions. Interest rate
movements in one country, as well as relative interest rate
movements between countries, materially impact the Partnership's
profitability. The Partnership's interest rate exposure is
generally to interest rate fluctuations in the U.S. and the other
G-7 countries. The G-7 countries consist of France, the
U.S., Britain, Germany, Japan, Italy and Canada. However, the
Partnership also takes futures positions in the government debt of
smaller countries - e.g., Australia. Demeter anticipates that the
G-7 countries and Australian interest rates will remain the
primary interest rate exposures of the Partnership for the
foreseeable future. The speculative futures positions held by the
Partnership may range from short to long-term instruments.
Consequently, changes in short, medium or long-term interest rates
may have an effect on the Partnership.
Equity. The third largest market exposure of the Partnership at
March 31, 2004 was to equity price risk in the G-7 countries. The
stock index futures traded by the Partnership are by law limited
to futures on broadly-based indices. At March 31, 2004, the
Partnership's primary exposure was to the Nikkei (Japan) stock
index. The Partnership is primarily exposed to the risk of adverse
price trends or static markets in the Japanese and U.S. stock
indices. Static markets would not cause major market changes, but
would make it difficult for the Partnership to avoid trendless
price movements, resulting into numerous small losses.

Commodity.
Energy. At March 31, 2004, the Partnership's energy exposure
was primarily to futures contracts in crude oil and natural
gas. Price movements in these markets result from
geopolitical developments, particularly in the Middle East, as
well as weather patterns and other economic
fundamentals. Significant profits and losses, which have been
experienced in the past, are expected to continue to be
experienced in the future. Natural gas has exhibited
volatility in prices resulting from weather patterns and
supply and demand factors and will likely continue in this
choppy pattern.

Metals. The Partnership's metals exposure at March 31, 2004
was to fluctuations in the price of base metals, such as
copper, aluminum and zinc. Economic forces, supply and demand
inequalities, geopolitical factors and market expectations
influence price movements in these markets. The Trading
Manager, from time to time, takes positions when market
opportunities develop and Demeter anticipates that the
Partnership will continue to do so.

Soft Commodities and Agriculturals. At March 31, 2004, the
Partnership had exposure to the markets that comprise these
sectors. Most of the exposure was to cotton and corn. Supply
and demand inequalities, severe weather disruptions and market
expectations affect price movements in these markets.

Qualitative Disclosures Regarding Non-Trading Risk Exposure
The following was the only non-trading risk exposure of the
Partnership at March 31, 2004:

Foreign Currency Balances. The Partnership's primary foreign
currency balance at March 31, 2004 was in British pounds. The
Partnership controls the non-trading risk of foreign currency
balances by regularly converting them back into U.S. dollars
upon liquidation of their respective positions.

Qualitative Disclosures Regarding Means of Managing Risk Exposure
The Partnership and the Trading Manager, separately, attempt to
manage the risk for the Partnership's open positions in
essentially the same manner in all market categories traded.
Demeter attempts to manage market exposure by diversifying the
Partnership's assets among different market sectors and trading
approaches, and by monitoring the performance of the Trading
Manager daily. In addition, the Trading Manager establishes
diversification guidelines, often set in terms of the maximum
margin to be committed to positions in any one market sector or
market-sensitive instrument.

Demeter monitors and controls the risk of the Partnership's non-
trading instrument, cash. Cash is the only Partnership investment
directed by Demeter, rather than the Trading Manager.

Item 4. CONTROLS AND PROCEDURES
(a) As of the end of the period covered by this quarterly
report, the President and Chief Financial Officer of the
general partner, Demeter, have evaluated the
effectiveness of the Partnership's disclosure controls
and procedures (as defined in Rules 13a-15(e) and 15d-
15(e) of the Exchange Act), and have judged such controls
and procedures to be effective.

(b) There have been no significant changes in the
Partnership's internal controls or in other factors that
could significantly affect these controls subsequent to
the date of their evaluation.
PART II. OTHER INFORMATION

Item 1. LEGAL PROCEEDINGS
None.

Item 6. EXHIBITS AND REPORTS ON FORM 8-K

(A) Exhibits

3.01 Limited Partnership Agreement of the Partnership, dated
as of June 24, 1988, is incorporated by reference to
Exhibit 3.01 and Exhibit 3.02 of the Partnership's
Registration Statement on Form S-1 (File No. 33-21532).
10.01 Amended and Restated Customer Agreement between the
Partnership and Morgan Stanley DW Inc., dated as of May
19, 2000, is incorporated by reference to Exhibit 10.01
of the Partnership's Form 8-K (File No. 0-17178) filed
with the Securities and Exchange Commission on November
13, 2001.
10.02 Commodity Futures Customer Agreement between MS & Co. and
the Partnership, and acknowledged and agreed to by Morgan
Stanley DW Inc., dated as of May 1, 2000, is incorporated
by reference to Exhibit 10.02 of the Partnership's Form
8-K (File No. 0-17178) filed with the Securities and
Exchange Commission on November 13, 2001.
10.03 Customer Agreement between the Partnership and MSIL,
dated as of May 1, 2000, is incorporated by reference to
Exhibit 10.04 of the Partnership's Form 8-K (File No.
0-17178) filed with the Securities and Exchange
Commission on November 13, 2001.
10.04 Foreign Exchange and Options Master Agreement between MS
& Co. and the Partnership, dated as of April 30, 2000, is
incorporated by reference to Exhibit 10.05 of the
Partnership's Form 8-K (File No. 0-17178) filed with the
Securities and Exchange Commission on November 13, 2001.
10.05 Securities Account Control Agreement among the
Partnership, MS & Co., and Morgan Stanley DW Inc., dated
as of May 1, 2000, is incorporated by reference to
Exhibit 10.03 of the Partnership's Form 8-K (File No.
0-17178) filed with the Securities and Exchange
Commission on November 13, 2001.

31.01 Certification of President of Demeter Management
Corporation, the general partner of the Partnership,
pursuant to rules 13a-15(e) and 15d-15(e), as adopted
pursuant to Section 302 of the Sarbanes-Oxley Act of
2002.
31.02 Certification of Chief Financial Officer of Demeter
Management Corporation, the general partner of the
Partnership, pursuant to rules 13a-15(e) and 15d-15(e),
as adopted pursuant to Section 302 of the Sarbanes-Oxley
Act of 2002.
32.01 Certification of President of Demeter Management
Corporation, the general partner of the Partnership,
pursuant to 18 U.S.C. Section 1350, as adopted pursuant
to Section 906 of the Sarbanes-Oxley Act of 2002.
32.02 Certification of Chief Financial Officer of Demeter
Management Corporation, the general partner of the
Partnership, pursuant to 18 U.S.C. Section 1350, as
adopted pursuant to Section 906 of the Sarbanes-Oxley Act
of 2002.

(B) Reports on Form 8-K

On April 14, 2004, the Partnership filed the Current Report on
Form 8-K for the purpose of reporting, under Item 5, the
Partnership's changes made to the Board of Directors of Demeter.

SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934,
the Registrant has duly caused this report to be signed on its
behalf by the undersigned, thereunto duly authorized.

Dean Witter Multi-Market Portfolio L.P.
(Registrant)

By: Demeter Management Corporation
(General Partner)

May 17, 2004 By:/s/Jeffrey D. Hahn
Jeffrey D. Hahn
Chief Financial Officer

The General Partner which signed the above is the only party
authorized to act for the Registrant. The Registrant has no
principal executive officer, principal financial officer,
controller, or principal accounting officer and has no Board of
Directors.

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