<TABLE> <S> <C>
<ARTICLE> 5
<LEGEND>
The schedule contains summary financial information extracted from
Dean Witter Portfolio Strategy Fund L.P. and is qualified in its entirety
by reference to such financial statements.
</LEGEND>
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> DEC-31-2000
<PERIOD-END> JUN-30-2000
<CASH> 85,464,391
<SECURITIES> 0
<RECEIVABLES> 478,820<F1>
<ALLOWANCES> 0
<INVENTORY> 0
<CURRENT-ASSETS> 0
<PP&E> 0
<DEPRECIATION> 0
<TOTAL-ASSETS> 86,303,881<F2>
<CURRENT-LIABILITIES> 0
<BONDS> 0
0
0
<COMMON> 0
<OTHER-SE> 0
<TOTAL-LIABILITY-AND-EQUITY> 86,303,881<F3>
<SALES> 0
<TOTAL-REVENUES> (8,806,063)<F4>
<CGS> 0
<TOTAL-COSTS> 0
<OTHER-EXPENSES> 4,973,898
<LOSS-PROVISION> 0
<INTEREST-EXPENSE> 0
<INCOME-PRETAX> (13,779,961)
<INCOME-TAX> 0
<INCOME-CONTINUING> (13,779,961)
<DISCONTINUED> 0
<EXTRAORDINARY> 0
<CHANGES> 0
<NET-INCOME> (13,779,961)
<EPS-BASIC> 0
<EPS-DILUTED> 0
<FN>
<F1>Receivables include interest receivable of $336,161 and due from DWR
of $142,659.
<F2>In addition to cash and receivables, total assets include net
unrealized gain on open contracts of $360,670.
<F3>Liabilities include redemptions payable of $1,737,665, management fee
payable of $287,227, and accrued administrative expenses of $135,845.
<F4>Total revenues include realized trading revenue of $(6,272,200),
net change in unrealized of $(4,753,679) and interest income of
$2,219,816.
</FN>
</TABLE>