For instance, the SPDR KBW Regional Banking ETF (NYSEArca: KRE) and the Regional Bank HOLDRs (AMEX: RKH) both have the regional banking moniker. RKH, though, has almost half its holdings in large national banks, which also have a large weighting in the fund, while KRE holds around 50 regional banks.

Additionally, the iShares Dow Jones U.S. Regional Banks (NYSEArca: IAT) also includes around 67 regional banks in its portfolio. First Trust NASDAQ ABA Community Bank Index (NASDAQ: QABA), on the other hand, gives the majority of its portfolio over to small-caps (45.2%) and mid-caps (21.2%).

For more information on regional banks, visit our regional banks category.

Max Chen contributed to this article.