The three major U.S. stock indexes, which were mostly directionless prior to the Fed announcement, jumped higher then deflated as investors digested the accompanying statement and Chair Jerome Powell's subsequent Q&A session.
Worries persist that the Fed's aggressive battle against inflation could tip the economy into recession, and recent turmoil in the banking sector, sparked by failures of SVB Financial Group (SIVB.O) and Signature Bank (SBNY.O), have exacerbated those fears.
All 11 major sectors of the S&P 500 ended the session deep in negative territory, with real estate (.SPLRCR) suffering the steepest percentage drop, its largest one-day plunge since Sept. 13.
The S&P 500 posted six new 52-week highs and 13 new lows; the Nasdaq Composite recorded 44 new highs and 179 new lows.
Volume on U.S. exchanges was 11.84 billion shares, compared with the 12.70 billion average over the last 20 trading days.