First Republic shares crater 50% as banks discuss fresh capital raise after $30 billion rescue

• First Republic Bank stock plunged as much as 50% Monday. 
• The WSJ reported that big banks were in talks to provide more aid to the struggling lender.  
• Over the weekend, S&P slashed First Republic's credit rating deeper into junk status. 

First Republic Bank shares tanked as much as 50% on Monday following a report from the Wall Street Journal that big banks were gearing up to provide even more aid to the bank, a week after 11 firms banded together to pour $30 billion into the struggling lender.