First Midwest Bancorp, a $3.2 billion-asset bank holding company based in Itasca, Ill., said it is revamping its small-business deposit products and plans to increase its focus on entrepreneurs this year.

The bank will introduce a slate of products this summer, including an investment account and cash management offerings, according to its regional president, Fred Alford.

"It's a very large untapped market," Mr. Alford said. "Everybody talks about small-business, but no bank has captured the market."

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