Shares of embattled bank Credit Suisse on Wednesday hit another all-time low for a second consecutive session, dropping by more than 21% shortly before being halted from trade. Credit Suisse’s largest investor, Saudi National Bank, said it could not provide the Swiss bank with any further financial assistance, according to a Reuters report. “We cannot because we would go above 10%. It’s a regulatory issue,” Saudi National Bank Chairman Ammar Al Khudairy told Reuters Wednesday. Several Italian banks were also subject to automatic trading stoppages after sharp declines, including UniCredit, Finecobank and Monte Dei Paschi. The embattled Swiss lender disclosed...