Here's everything you need to know before Thursday's opening bell

  1. Broadcom (AVGO - Get Report) reached an agreement to acquire CA Technologies (CA) for $18.9 billion in cash.
  2. Comcast (CMCSA - Get Report) said it will pay £14.75 a share for Sky (SKYAY) , topping Fox's £14 bid. 
  3. Papa John's International (PZZA - Get Report) founder John Schnatter resigned as chairman.
  4. Twitter (TWTR - Get Report) said it would begin removing suspicious accounts it has locked. 
  5.  U.S. stock futures rose.