KBW bank index streak hits six weeks, longest since 2008

The KBW bank index streak reached six straight weekly losses on Friday, Oct. 16, the longest run for big U.S. bank stocks since 2008, Bloomberg data carried by Moneycontrol show. The 24-member gauge fell nearly 1% on the week and is about 13% below its August record, deep in correction territory.

What happened

Citigroup, State Street, Bank of America and Morgan Stanley were among the worst performers in the KBW Bank Index during the week. JPMorgan Chase bucked the trend, rising about 2%. Quartz, citing Bloomberg before Friday's close, had the index down 1.1% for the week with JPMorgan up 1.7%.

The drop is not the deepest this year. The index suffered an almost 17% drawdown earlier in 2026. What stands out is persistence: six consecutive down weeks rather than one sharp fall. The sector was already battered by worries about how artificial intelligence could disrupt financial services before this week's mixed quarterly results, Moneycontrol noted.

Barclays analyst Jason Goldberg found the index underperformed the S&P 500 on 18 of the 21 trading days after the Federal Reserve raised rates on Sept. 16. He said that had not happened in any rolling 21-session window since the index began in May 1992, Quartz reported.

Why it matters

Third-quarter earnings did not fix the mood. "Third-quarter results did little to reverse the weakness, with stable operating leverage but mixed trading as fixed-income results disappointed despite strength in equities," said Bloomberg Intelligence analyst Herman Chan.

Rates are the main weight. "Big-bank stocks are facing a confluence of concerns, with a higher-for-longer rate backdrop raising the risk of slower economic growth and higher loan losses," Chan said. A hot inflation reading last week added to fears about how far the Fed will go; our September CPI report covered the numbers.

AI cuts both ways for banks. Chan said rising funding costs for AI companies raise questions about how long capital-markets revenue tied to the build-out can last, and that agentic AI could eventually threaten the cheap, stable deposits that drive bank profits. That sits awkwardly with banks' own push into digital assets, from Wall Street banks tokenization to custody.

What's next

Sustained weakness in bank shares can be a warning sign for the economy because lenders fund growth through credit. For investors, the KBW bank index streak is a sentiment gauge as much as a valuation call: dispersion is wide, with JPMorgan gaining while Citigroup, State Street, Bank of America and Morgan Stanley lagged. The next catalyst is the Fed's Oct. 28 decision. On Monday morning Polymarket traders priced about an 88% chance the Fed holds rates in October and about 76% for a quarter-point hike in December, so the higher-for-longer backdrop Chan described is not going away.

A seventh down week would extend the KBW bank index streak further into territory last seen during the financial crisis. A calmer bond market offers the sector its best chance of a pause. The 10-year Treasury yield slipped to about 5.05% in Asian trade on Monday after its biggest weekly drop in more than eight months, Reuters data show. Lower long-term yields would ease pressure on bond portfolios and on borrowers, though a Fed that keeps hiking would push the other way on funding costs.