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FRM Part II · FRM Exam Part II · The Failure Mechanics of Dealer Banks

A dealer bank funds a $10 billion portfolio of securities with overnight repo. The repo haircut is 5% before stress and rises to 15% during stress. Assuming the dealer must keep the same portfolio and replace the lost repo funding with its own cash, how much additional cash does it need?

The dealer needs an additional $1.0 billion. The haircut rise from 5% to 15% lifts own-cash funding from $0.5 billion to $1.5 billion on a $10 billion portfolio, so the increment is $1.0 billion. Stating $1.5 billion ignores the cash it already provided.

  1. A$0.5 billion
  2. B$1.0 billionCorrect
  3. C$1.5 billion
  4. D$10.0 billion

Explanation

Before stress the dealer funds 5% of $10bn = $0.5bn with its own cash. After the haircut rises to 15% it must fund $1.5bn itself. Additional cash = $1.5bn − $0.5bn = $1.0bn. The $1.5bn option forgets the cash already committed.

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