JPMorgan Chase & Co. is planning to open between 25 and 30 branches in Northern California this year as part of its ongoing quest to add market share in the nation's largest state.

The branch openings would be on top of the 29 the $2.3 billion-asset banking giant has opened in the San Francisco Bay area in 2011 and the dozens it has opened in California since it entered the state in late 2008 when it took over the failed Washington Mutual Bank. The Oakland Tribune reported Wednesday that the bank is eyeing expansion in counties throughout the Bay Area, where it ranks fourth in deposit share, behind Bank of America Corp., Wells Fargo & Co. and Citigroup Inc.

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