Wall Street is roaring toward records Thursday as a delayed jubilation sweeps markets worldwide following the Federal Reserve’s big cut to interest rates. The S&P 500 was 1.5% higher in early trading and above its all-time closing high set in July.

Just as Wall Street traders come to grips with the Federal Reserve’s interest-rate cut, Friday’s US options expiration threatens to whipsaw the market some more.

The momentous move by the Fed helps financial markets in two big ways. It eases the brakes off the economy, which has been slowing under the weight of higher rates, and it gives a boost to prices for all kinds of investments. Besides stocks, gold and bond prices had already rallied in recent months on expectations that cuts to rates were coming.