Why repo matters
Repo is central to securities financing and market liquidity. It lets holders borrow cash against collateral, but short maturities can create rollover and margin risk.
How it is applied
Parties specify collateral, purchase price, repurchase price, term, haircut, substitution, margining, custody, and default rights. Treasury teams stress collateral values and funding renewal. One party sells securities and agrees to repurchase them later at a higher price, economically creating secured financing. Analysts examine collateral, haircut, term, repo rate, margining, counterparty, custody, substitution, and close-out rights.
Portfolio example
A dealer receives $98 million cash against $100 million of bonds, a 2% haircut, and repurchases them the next day for $98.01 million. The difference represents financing cost. A dealer receives 98 million cash against securities worth 100 million and repurchases them after 30 days at a price reflecting a 4% annual repo rate. The 2 million difference at inception is the haircut, not interest income.
How to interpret it
The repo rate is a financing rate, while the haircut protects the cash lender against collateral loss. Scarce securities can trade at special rates. Repo rates reflect policy rates, collateral scarcity, term, and counterparty risk. Special collateral can trade at an unusually low repo rate because borrowers value obtaining that specific security. Haircuts determine financing leverage.
Limitations and common misconceptions
Legal form and settlement differ by market. Collateral can fall faster than margin is collected, counterparties can default, and funding can disappear during stress. Collateral values can fall, margin calls can accelerate deleveraging, and settlement or legal close-out can fail. Repeated overnight funding creates rollover risk. Reuse of collateral also connects institutions in ways gross balance sheets may obscure. Balance-sheet reporting should distinguish gross repo, reverse repo, net exposure under enforceable agreements, and collateral received or pledged. A matched book can still carry basis, liquidity, and counterparty risk. Central clearing changes counterparty structure but not the need for margin liquidity. Stress analysis should assume simultaneous collateral declines, haircut increases, and reduced ability to roll funding. Counterparty and collateral concentration should be disclosed separately from net financing cost.
Sources and further reading
- Trade Strategy and ExecutionCFA Institute
- Trade ExecutionU.S. Securities and Exchange Commission, Investor.gov