Bank stocks still remain under pressure and that signals the sector's turmoil hasn't ended yet, Jim Bianco said.
Financial stocks faced a rout over the past month following the collapses of Silicon Valley Bank and Signature Bank.
The KBW bank stock index is down 3% this week, after a 25% slump in March that was the biggest monthly drop in three years.
Shares of lenders and other financial companies have been under pressure since the implosions of Silicon Valley Bank, Signature Bank and Silvergate Capital last month.
Otherwise, the bank stocks might be in trouble ... oh, wait!," Bianco, who runs Chicago-based Bianco Research, tweeted on Wednesday, alongside a chart showing sharp declines in bank stock indexes.