Credit Suisse shares tank after Saudi backer rules out further assistance
Shares of Credit Suisse hit a fresh all-time low for the second consecutive day as the bank's biggest backer says it can't provide more financial help.
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### Instruction: Credit Suisse shares tank after Saudi backer rules out further assistance

### Response: Shares of Credit Suisse hit a fresh all-time low for the second consecutive day as the bank's biggest backer says it can't provide more financial help.