Key Takeaways The KBW Nasdaq Bank Index jumped 18% in three months, beating the broader market's 9% rise.JPMorgan, Goldman Sachs, and Citigroup posted strong results and gained up to 26% recently.Rate cut signals, stress test strength, and solid Q2 earnings fueled the rally in major banks.The performance of banking stocks has been impressive of late, especially after better-than-expected second-quarter 2025 results. In the past three months, the KBW Nasdaq Bank Index, which tracks the 24 largest banks in th ...