If the time to buy is when the blood is running in the streets—as the Baron Rothschild famously once said—then you should be buying bank stocks.

That’s because Wall Street is running red with the banking industry’s blood. I’m not just referring to Silicon Valley Bank SIVB, which plunged this week before being shut down on Friday and placed in FDIC receivership. (SVB is the holding company for Silicon Valley Bank of Santa Clara, Calif.)

First…