U.S. stock indexes slipped Wednesday after the Federal Reserve opted not to cut interest rates for the first time since it began trying to help the economy through easier rates in September. The S&P 500 fell 0.

U.S. stock indexes are rallying toward the close of their best week in two months. The S&P 500 rose 1.1% Friday.

The Federal Reserve left interest rates unchanged on Wednesday, amid a cloudy economic outlook, partly because some of President Trump’s policies could stymie the fight against inflation. Wednesday’s pause comes after the central bank cut interest rates by a full percentage point between September and December of last year.