He's not a state attorney general, but David Grais may soon become the lawyer that Wall Street hates most.

His New York firm, Grais & Ellsworth, is behind several of the most prominent investor lawsuits against securities dealers over mortgage-backed bonds issued during the boom years that have since soured. This week, Grais filed suit on behalf of the Federal Home Loan Bank of San Francisco, seeking to push $19.1 billion of failing securities back into the hands of the companies that issued or underwrote them. The defendants include Bank of America Corp., JPMorgan Chase & Co. and several U.S. and foreign investment banks.

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