Bank stocks plunge after implosions at Silicon Valley Bank and Silvergate Capital send 'shock waves' through the sector

• Bank stocks plunged on Thursday as investors assessed the potential fallout from the implosions of Silicon Valley Bank and Silvergate Capital.
• SVB Financial surprised investors with lowered guidance, a $2.3 billion capital raise, and a massive $1.8 billion loss from its bond portfolio.
• "This is sending shock waves through the financials with the regional bank ETF lower by 8%," NYSE's Michael Reinking said.

Bank stocks were crushed on Thursday after implosions at Silicon Valley Bank and Silvergate Capital sent "shock waves" through the rest of the sector.