Judging by bank stock indexes, investors feel that good times are just around the corner. But Business Week notes that when it comes to regional banks, there's a whole class of institutions that may be at the whim of the commercial loan market. At banks with a high concentration of commercial loans, there's a lot of nervousness as the recession continues to take its toll.

The article offers some examples of banks with relatively high exposures. The percentage of commercial loans in loan portfolios was 65 percent for BB&T, 77 percent  Comerica, and 64 for Fulton Financial and 57 percent for PNC (data from CapitalIQ). Some analysts are certainly nervous about BB&T. 

For more:
- here's the article

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