Discover Financial Services — Shares slipped 6.5% after CEO Roger Hochschild resigned. The company said board member John Owen would assume the role of interim chief executive.
Turnstone Biologics — Stock in the biotechnology company slipped 2.3% in premarket trading. Earlier Tuesday, investment firm Piper Sandler initiated coverage of the stock with an overweight rating. Bank of America also began coverage of Turnstone on Tuesday, albeit with a buy rating.
