Polymarket data indicates that Rick Rieder, BlackRock's Global Head of Fixed Income, holds a 47% implied probability of becoming the next Federal Reserve Chair. This positions him ahead of former Fed Governor Kevin Warsh at 28%, current Fed Governor Christopher Waller at 9%, and White House National Economic Advisor Kevin Hassett at 8%. The event has seen trading volumes surpass $250 million, with Rieder's odds notably increasing in January, overtaking Warsh on January 23.