The Dow Jones industrials were up nearly 280 points in the last quarter hour of the session, giving them a two-day gain of more than 1,160 points, when another bout of last-hour volatility wiped out the advance. Some analysts said hedge funds were cashing in their gains, while others said some investors were giving a bleak interpretation to the Federal Reserve's statement on the economy that accompanied its half-point rate cut.
The Dow is down 74 points at the 8,890 level. The broader market indexes have ended the day mixed.
