Stocks made gains today, extending a winning streak into its fourth day, MarketWatch reports. Merck rose 12.5% on announcement of its merger with Schering-Plough, while General Motors built on recent gains with a 22.9% jump. The Dow closed up 53.92 at 7,223.98. The Nasdaq rose 5.40 to close at 1,431.50, while the S&P 500 gained 5.81 to settle at 756.55.
For the week, the Dow rose 9%, the Nasdaq gained 10.6%, and the S&P added 10.7%
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