Despite a $44 billion railroad acquisition, stock futures were in the red following a sell off in the European markets.

 Here are some of the early-market movers for Tuesday. 

Burlington Northern Santa Fe Corp (BNI)

In Warren Buffett's largest acquisition to date, Berkshire Hathaway announced it will acquire the remaining 77% of the Burlington Northern Santa Fe Corp. in a cash and stock deal valued at $44 billion. Burlington shares jumped 28.8% in pre-market trading. 

Black & Decker Corp (BDK) 

Shares jumped 23.2% in pre-market trading Tuesday after the company announced late Monday it would be acquired by Stanley Works (SWK) in a $3.46 billion stock Black & Decker shareholders will receive 1.275 Stanley for each Black & Decker share they own. 

Sonic Solutions (SNIC)

The company announced it has entered into a strategic relationship with Best Buy Co., Inc.