Stock prices ended mixed yesterday as a profit warning from Xerox rattled the market but failed to discourage technology investors, who pulled the Nasdaq composite index further into record high territory.

On Wall Street, the Dow Jones industrial average dropped 32.11 at 11,192.59. Broader stock indicators were mixed. The Nasdaq set its 23rd record since October 29th, and is now up 66.9 per cent for 1999.

The Standard and Poor's 500 fell 1.82 to 1,415.22, and the Nasdaq composite index rose 40.75 to 3,660.99.

Declining issues outnumbered advancers by a five-to-three margin on the New York Stock Exchange, with 1,942 down, 1,141 up and 488 unchanged.

NYSE volume totalled 971.00 million shares at the close compared to 981.37 million in the previous session.