The Federal Reserve kept its benchmark interest rate unchanged on Wednesday, but the decision delivered a jolt of uncertainty that has left investors struggling to pin down the new policy direction under Chairman Kevin Warsh.

While the majority of policymakers voted to maintain the status quo, the outcome was unusually uncertain due to the central bank's deliberate shift away from providing forward guidance.

Financial markets had been pricing in a roughly one-in-three chance of a quarter-percentage-point rate hike ahead of the meeting.

The decision to hold steady provided some relief, but the lack of clarity on future moves has complicated trading strategies.

Traders are now navigating a regime where traditional signals from the Fed's dot plot or press conferences are no longer available to anchor expectations.

A growing number of Fed officials have expressed open concern about inflation, creating a tension between the desire to support growth and the need to ensure price stability.