Starboard takes $1B stake in Pfizer

Activist Starboard takes $1B stake in Pfizer (PFE) - report. (00:23) Rio Tinto (RIO) makes takeover approach to Arcadium Lithium (ALTM). (01:25) ‘Joker’ (WBD) sequel tops box-office sales despite brutal reviews. (01:56)Episode transcripts seekingalpha.com/wsb.Show links: Biggest stock movers Monday: PFE and ALTMRegeneron co-founder warns of harms from weight-loss drugs: FTBP said to eye raising oil production as it scales back clean energy strategyTotalEnergies to acquire 50% stake in North Sea wind projectsSign up for our daily newsletter here and for full access to analyst ratings, stock quant scores, dividend grades, subscribe to Seeking Alpha Premium at seekingalpha.com/subscriptions.