Stalled: Wal-Mart shares fell 3.2 percent, to $69.39 Thursday after the world’s largest retailer said it expects no earnings-per-share growth in its next fiscal year and will slow its store expansion plans. Shares closed the week at $68.70.

 

Tweet retreat: Twitter plunged 19 percent, to $20.11 Thursday on reports that some companies that were believed to be interested in buying it will not. Rumors of a deal had sent Twitter up 33 percent in the 11 trading days through Wednesday. Shares closed the week at $19.85.

 

Big arrest: Consulting firm Booz Allen Hamilton fell 4 percent, to $30.31 Wednesday after a report that a contractor who worked for the firm had been arrested on charges he illegally removed highly classified information from the National Security Agency. Shares closed the week at $30.19.

Beer bounce: Constellation Brands rose 3 percent, to $170.51 Wednesday after it reported strong sales of beers like Corona and Modelo in its latest quarter. It raised its projections for sales growth for its beer business. Shares ended the week at $168.84.

 

Drugmaker downer: Merrimack Pharmaceuticals slumped 4 percent to $6.05 Monday after it said it would cut almost a quarter of its workforce and look for a new CEO. Shares closed the week at $5.48.

 

Retail rocket: Outdoor goods retailer Cabela’s shot up 14 percent, to $62.92 Monday on news it is being bought by Bass Pro Shops. Activist investment firm Elliott Management began pushing for significant changes at Cabela’s last fall. Cabela’s shares closed the week at $62.25.