Financial stocks experienced a broad-based rally on Monday, with gains surpassing the broader market, as a key bank stock index hit a record high. The KBW Bank Index climbed 2.8%, reaching a record intraday high. Among individual stocks: Goldman Sachs surged as much as 4.5%, Citigroup advanced 3.6%, and Bank of New York Mellon rose 3.6%. The S&P 500 Financials Index increased by 2.3%, also setting a new intraday record high. Key movers included: Coinbase, which jumped 7.8%, Moody's, up 5.4%, and KKR, gaining 4.5%.