Pfizer shares have gained ground since a report over the weekend said that activist investor Starboard Value has taken a roughly $1 billion stake in the drug maker and is pushing for changes. Monitor these important chart levels.

While Pfizer has made a number of acquisitions, its biggest bet is on Seagen. Pfizer wants this to be a transformative acquisition, and it projects Seagen to contribute $10 billion in sales by 2030. It said following the deal, it now has eight or more potential blockbuster drugs in its pipeline.