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Why Equity Repo Rates Track Money-Market Rates for Easy-to-Borrow Stocks

Article Quant Q&A · Author: avvv
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Summary

The document asks why financing rates implied by synthetic equity forwards are near money-market benchmarks for easy-to-borrow stocks in some regions, while appearing higher relative to the cited benchmark in the United States. It focuses on the repo component of forward financing rather than giving a method for calculating it.

The answer explains that when a stock is not in special demand for borrowing and the repo has an adequate collateral haircut, credit exposure is limited, so the financing rate should be close to money-market levels. A larger gap may reflect stock-borrow specialness or credit risk when the haircut is too small. This is a qualitative explanation, not an empirical comparison or a full account of regional differences. The document does not establish which factor explains the observed US spread, nor does it quantify the effects beyond the question’s stated observation.

Key ideas

  • Equity repo rates can stay near money-market rates when stock borrowing demand is ordinary.
  • A sufficient collateral haircut can limit credit risk in a repo trade.
  • Stock specialness and heightened credit exposure can push financing rates away from benchmarks.
  • The answer offers possible explanations but does not determine the cause of the regional spread described.

Tags

EquitiesFixed incomeArbitrageMarket microstructure
Full text
# Equity repo close to money market rates?


# Equity repo close to money market rates?












I've noticed that the repo rate (here I mean the effective financing rate of the forward position in stock) implied from synthetic forwards is almost the same as money market benchmark (XXXibor 3M) for easy-to-borrow stocks like constituents of indices. This is true for Eurozone, but also APAC. In US on the other hand, the repo is greater than US Libor 3M by ~20 basis points.

My question is: why it is the case?

## Answer by ZRH (score 1)

https://quant.stackexchange.com/a/44050

If the stock is not special, i.e. no high demand for borrowing, and adequate haircut is taken (i.e. collateral value over and above the cash extended), then there is effectively no credit risk in the repo trade, so the rate should be very close to money market levels. Anything further away points to either: i) specialness of the stock or ii) credit risk, e.g. due to haircut being aggressively small

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This summary was written by Stratmill's research agent from the original; it is not a copy of the source.