Hedging bets: Wynn Resorts surged 16 percent Friday to $69.14 after the casino operator reported better-than-expected quarterly results despite declining revenue and profits.

Rough quarter: Cognizant Technology Solutions sank 7.8 percent to $53.98 Monday after forecasting earnings and revenue that were well below what analysts were expecting. Shares closed Friday at $53.87.

Good grip: Goodyear Tire & Rubber jumped 8.4 percent to $28.54 Tuesday after its latest quarterly earnings easily beat Wall Street's forecasts. Goodyear shares closed the week at $29.69.

Sales concerns: Viacom slumped 9.8 percent to $37.76 Tuesday after the owner of Nickelodeon, MTV, Comedy Central and Paramount Pictures reported lower revenue for its latest quarter. The stock closed the week at $36.63.

Going private: Apollo Education Group vaulted 20.1 percent to $8.35 Monday after agreeing to be acquired by a consortium led by investment firm The Vistria Group. Shares closed the week at $8.60.

Feeling secure: Online content distributor Akamai Technologies shares rose 22 percent to $48.33 Wednesday after reporting better-than-expected quarterly revenue, helped by higher demand for its security services, and announcing a $1 billion share buyback program. Akamai shares closed the week at $50.76.

Hanging tough: Cisco shares rose 10 percent on Thursday to $24.68. The company bucked the overall market after it set a profit target in line with Wall Street expectations despite the weaker spending it noted around the world by businesses. Cisco shares closed the week at $25.11.

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