US stocks rally sharply as Nasdaq 100 nears record and bullish options surge.

US stock markets rallied strongly, with the S&P 500 gaining nearly 6% over four days and the Nasdaq 100 rising 3.3% to within 3% of its June record. This surge was driven by a rush to cover short positions and increased buying of bullish call options, marking one of the most optimistic days for the Nasdaq 100 in a decade. Treasury yields fell, oil prices dropped, and tech stocks rebounded amid strong earnings growth and stabilizing markets. Investors are now weighing robust earnings against reasonable valuations, signaling renewed confidence in the market's momentum.