Cold bath: Bed Bath & Beyond shares fell 12 percent to $29.65 Friday after it reported weaker earnings for the latest quarter than analysts expected. The retailer’s revenue also fell short of Wall Street’s forecasts.

 

Opening up: Red Hat, an open-source software company, surged 8.4 percent to $97.55 Wednesday after reporting better-than-expected earnings for its latest quarter. Its forecast for revenue and earnings this fiscal year also topped analysts’ expectations. Its stock closed Friday at $99.42.

 

Step on the gas: Rice Energy shares rose 27 percent to $24.94 Monday after it agreed to be acquired by EQT for $6.7 billion in cash and stock. The combined company will be the largest producer of natural gas. Shares closed Friday at $25.65. EQT shares, which fell 9.4 percent to $53.25 on the news, closed the week at $56.19.

Taking off: American Airlines Group rose 2.6 percent to $49.71 Thursday after saying that Qatar Airways told its U.S. rival it’s looking to buy a 10 percent stake in it. Shares closed Friday at $48.63.

 

Deal bounce: PerkinElmer, which sells testing equipment and scientific instruments, jumped 4.7 percent to $66.55 Monday after it agreed to buy Euroimmun Medical Laboratory Diagnostics AG of Germany for $1.3 billion in cash. The stock closed Friday at $68.45.

 

Soured: Chipotle Mexican Grill slumped 5.9 percent, to $432.01 Tuesday after it said marketing costs will eat up a slightly bigger percentage of revenue this quarter. Shares finished the week at $415.28.

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