Doral Financial Corp. (DRLCQ)

[sterlingkuning]

There was no particular news that should have caused troubled Puerto Rican banker Doral Financial to tumble last week (though it updated its prospectus in the middle of the free fall), but the markets shaved off nearly a quarter of its value nonetheless.

Earlier this year, Doral bid for rival First Bancorp (NYSE: FBP ) ; although it was rejected, it apparently remains an open offer. But there's also talk that hedge funds would like to make a bid for both banks and consolidate them to create a more financially stable institution. It would create a bank with 81 branches and $23.6 billion in combined assets, putting it on par with Popular Inc. (Nasdaq: BPOP ) , which has 96 branches and $29.5 billion in assets.