The CEO's resignation comes one day after the company said it had placed Byron on leave.

It comes as part of a pre-planned arrangement on the heels of surging AI demand

Bullish, the cryptocurrency exchange that counts Peter Thiel as an investor, is going public under the ticker symbol "BLSH."

The change follows a ProPublica report that outlined how Microsoft's use of Chinese engineers left U.S. defense clients vulnerable to cybersecurity risks.

Block is joining the S&P 500, replacing Hess as of July 23.