Cord-cutting: Media giants sank following signs that more people are ditching cable TV. Viacom, the company behind Comedy Central and Nickelodeon, led the decline Thursday as its shares dropped 13 percent, to $44.84, after reporting sales and profit fell in the most recent quarter. Viacom shares closed the week at $45.93.

High-def: Shares in Nvidia, a maker of computer graphics cards, jumped Friday after it said sales of its high-end products were up from last year. The company's stock gained 12 percent, to $22.98.

Bright spot: First Solar soared 17 percent Wednesday, to $51.92, following news that the country's largest solar company turned in results that beat estimates as revenue jumped 65 percent on a boost in facility sales. The company also raised its outlook for full-year profits. First Solar shares closed the week at $52.08.

Creamed: Keurig Green Mountain plunged 27 percent Thursday, to $52.95 after reporting falling sales of its packaged coffee and brewing products. Its stock closed the week at $53.43.

Allstate slump: Allstate dropped 10 percent, to $62.27, on Tuesday after reporting earnings that fell significantly short of analysts' expectations. The company said its earnings dropped because of more frequent and more severe auto crashes. Shares closed Friday at $62.54.

Pharma deal: Pharmaceutical company Baxalta rose 15 percent Tuesday, to $38.08 after larger rival Shire offered $30 billion in stock to acquire the company and solidify its position in rare disease treatments. ­Baxalta's stock closed the week at $37.60.