Midday Leaders & Laggards: S&P 500

The S&P 500 rose 0.75 points to 1,283.90.

Among the gainers, King Pharmaceuticals Inc. advanced 42 cents, or 4.3 percent, to $10.30.

Sears Holding Corp. added $3.19, or 4.3 percent, to $77.59.

Bristol-Myers Squibb Co. jumped 80 cents, or 4.1 percent, to $20.47. The pharmaceuticals company said late Thursday it completed its $234.6 million acquisition of Kosan Biosciences.

Micron Technology Inc. took the biggest hit, falling 69 cents, or 9.9 percent, to $6.30 after the chip maker posted a fiscal third-quarter loss that was greater than analysts were expecting.

International Game Technology tumbled $2.35, or 8.6 percent, to $24.95. A Morgan Stanley analyst downgraded the video game maker to "Equal Weight" from "Overweight" in a note to investors. Earlier in the session, shares hit a three-year low of $24.81.

Shares of Lennar Corp. gave up 55 cents, or 4.1 percent, to $12.79 after the builder posted a disappointing second-quarter loss.