<TABLE> <S> <C>
<ARTICLE> 5
<LEGEND>
The schedule contains summary financial information extracted from Dean
Witter Cornerstone Fund IV 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> 96,911,571
<SECURITIES> 0
<RECEIVABLES> 358,044<F1>
<ALLOWANCES> 0
<INVENTORY> 0
<CURRENT-ASSETS> 0
<PP&E> 0
<DEPRECIATION> 0
<TOTAL-ASSETS> 95,826,165<F2>
<CURRENT-LIABILITIES> 0
<BONDS> 0
0
0
<COMMON> 0
<OTHER-SE> 0
<TOTAL-LIABILITY-AND-EQUITY> 95,826,165<F3>
<SALES> 0
<TOTAL-REVENUES> 4,801,277<F4>
<CGS> 0
<TOTAL-COSTS> 0
<OTHER-EXPENSES> 3,609,058
<LOSS-PROVISION> 0
<INTEREST-EXPENSE> 0
<INCOME-PRETAX> 1,192,219
<INCOME-TAX> 0
<INCOME-CONTINUING> 1,192,219
<DISCONTINUED> 0
<EXTRAORDINARY> 0
<CHANGES> 0
<NET-INCOME> 1,192,219
<EPS-BASIC> 0
<EPS-DILUTED> 0
<FN>
<F1>Receivables include interest receivable of $358,044.
<F2>In addition to cash and receivables, total assets include net
unrealized loss on open contracts of $1,443,450.
<F3>Liabilities include redemptions payable of $1,010,468, accrued
management fees of $317,828 and accrued administrative expenses
of $159,972.
<F4>Total revenues include realized trading revenue of $4,334,446, net
change in unrealized of $(1,724,960) and interest income of $2,191,791.
</FN>
</TABLE>