Bargain hunting: Discount retailer Dollar General climbed 6.6 percent, to $95.13 Thursday after it said shoppers spent more money per trip during the fourth quarter. The company also gave a strong forecast for the year. Shares closed Friday at $95.43.

 

Signet tarnished: Signet Jewelers plunged 16.3 percent to $40.11 Wednesday after the jewelry retailer gave profit and sales forecasts that were weaker than analysts expected. Signet also said it intends to cut at least $200 million in spending. The stock finished the week at $38.68.

 

Check engine light: Tesla declined 2 percent to $335.14 after treasurer Susan Repo left to become chief financial officer at another company. A week ago the electric carmaker said Chief Accounting Officer Eric Branderiz left “for personal reasons.” Tesla stock closed Friday at $321.35.

Deal bounce: Optical communications company Oclaro surged 28 percent to $10.04 Monday after it agreed to be bought by Lumentum Holdings for $9.99 a share, or $1.69 billion. Shares closed Friday at $9.93. Lumentum, up 5.5 percent, to $75 on the news, closed Friday at $69.95.

 

Bad holiday: Dick’s Sporting Goods slumped 6.7 percent to $30.38 Tuesday after the chain reported disappointing holiday sales. Like many companies, Dick’s is trying to fend off competition from Amazon.com. The stock closed the week at $34.92.

 

Nice shine: Shoe retailer DSW rose 10 percent, to $21.59 Tuesday after posting better-than-expected earnings despite a narrow miss on revenue and announcing it would kill its troubled EBuys unit. Shares closed Friday at $21.95.

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