Earnings bounce: Intel Corp.'s shares rose 10.5 percent to $50.08 on Friday, its highest in almost two decades, after strong earnings offered the clearest sign yet that its yearslong effort to shift away from a slowing PC business was paying off.

Growth jitters: United Continental shares fell nearly 10 percent to $70.33 Wednesday after the airline said it's planning more aggressive growth over the next few years. It's aiming to increase its passenger-carrying capacity by 4 to 6 percent a year through 2020. Investors worried that more flights will mean reduced prices and hurt its profits. The stock closed Friday at $66.56.

Energized: Halliburton climbed 4.6 percent to $55.45 Monday after the drilling services company posted a bigger adjusted profit and greater revenue than analysts expected. Shares closed the week at $55.61.

Power up: FirstEnergy surged 13.2 percent to $33.33 Monday after it received a $2.5 billion investment from a group of firms including Paul Singer's Elliott Management. The stock closed Friday at $32.09.

Deal bounce: Hemophilia treatment maker Bioverativ's shares rose 62 percent to $39.47 Monday after Sanofi said it would acquire the company for $105 a share. Bioverativ closed Friday at $103.03. Sanofi, which declined 3.1 percent to $43.22 on the news, closed the week at $45.76.

Insurance shopping: Shares in Validus, reinsurance firm, rose 44.5 percent to $67.50 Monday after AIG said it would acquire it for $68 a share. Validus shares closed Friday at $67.45, while AIG closed Friday at $64.68 after sliding 1 percent to $61.01 Monday.

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