Here are 4 tips for today's trading. This will help you decide where you should invest and what to look for:
1. Markets expect M&A announcement
Shares in Allergan (AGN) are rising by about 3% premarket on expectations that U.S. pharmaceutical giant Pfizer (PFE) is set to announce a takeover deal. If the deal goes through with the reported price tag north of $150 billion, it would be the second-largest takeover of all time, according to data from Dealogic.