Early Edge: Fitbit, Starz, Adept Tech, Sirona Dental Systems

Wall Street headlines are chock-full of new and potential partnerships, led by a massive takeover proposition in the beer universe. Also making noise are wearable tech concern Fitbit Inc (NYSE:FIT) and retailer Target Corporation (NYSE:TGT); entertainment issues Starz (NASDAQ:STRZA) and AMC Networks Inc (NASDAQ:AMCX); robot concerns Adept Technology Inc (NASDAQ:ADEP) and OMRON Corporation; and dental products makers Sirona Dental Systems, Inc. (NASDAQ:SIRO) and DENTSPLY International Inc. (NASDAQ:XRAY).

• FIT is up 4.3% at $34.51, after TGT said it will offer activity trackers to 335,000 U.S. employees. The partnership -- which marks a biggie for FIT -- will ideally help TGT improve employee health and reduce healthcare costs. It seems Wall Street already loves Fitbit Inc, which has enjoyed some generous analyst attention of late.

• STRZA has jumped 3.8% to $40.25, after Bloomberg said AMCX is in talks to bid for the firm. Starz -- once rumored to be a potential Lions Gate Entertainment Corp. (USA) (NYSE:LGF) takeover target -- could be spooking the shorts, as nearly 11% of the stock's float is sold short, representing seven sessions' worth of pent-up buying demand, at the security's average daily trading volume.

• ADEP has skyrocketed 62% to sit at $12.94 -- a new annual high -- after Japan-based OMRON offered $13 per share for the firm. No doubt short sellers are ruing their positions, as Adept Technology Inc's short interest ratio stands at 13.7 days to cover.

• SIRO, meanwhile, is down 3% at $96.37, as traders pan an all-stock merger with peer XRAY, which was last seen 2.8% lower at $52.84. The deal values Sirona Dental Systems, Inc. shares at $98.60. The combined company -- to be called Dentsply Sirona -- will be the biggest of its kind in the world