Intensifying troubles at Bank of America Corp. and Citigroup Inc. are spawning new questions about a possible need for further government support, even for the likes of Wells Fargo & Co., which is perceived by many on Wall Street to be in relatively sound shape.

"I wouldn't be surprised at all if Wells Fargo comes back to the government for help," Jack Ablin, the chief investment officer at Bank of Montreal's Harris Private Bank, said in an interview Friday.

Subscribe Now

Access to authoritative analysis and perspective and our data-driven report series.

14-Day Free Trial

No credit card required. Complete access to articles, breaking news and industry data.