How Stock Lending Fees Incentivize Share Lenders

Summary

The document describes the two sides of a stock loan. A short seller borrows shares because they expect to sell them now and repurchase them later at a lower price. The lender can earn a borrow fee while retaining the economic exposure associated with holding the shares, rather than needing to predict that the stock will rise.

Borrow costs can increase when a stock becomes difficult to borrow because short sellers are competing for limited available shares. The answer also notes that index-tracking institutions, including pension funds, may lend shares they hold to support index exposure; lending income can improve returns relative to the benchmark. This is a brief conceptual explanation rather than a treatment of lending mechanics, collateral, rebate rates, or the risks and constraints that can affect securities-lending revenue.

Key ideas

• Short sellers pay a borrow fee to access shares for a short position.
• The lender's compensation comes from lending income rather than a required bullish view.
• Borrow fees may rise when demand for a particular stock exceeds available supply.
• Index-tracking investors may lend shares they hold to earn income against their benchmark exposure.

Tags

# What incentivises short selling?


# What incentivises short selling?












The borrower of the asset is incentivised by the belief that the relative value of the asset will go down (he can then sell it at high price now and buy back cheaper later).

But what incentivises the lender? It can't be the belief that the relative value of the asset will go up (since then he could just hold onto the asset). So it must be some sort of a premium (like an extra quantity of asset returned / interest) that motivates the lender; is that correct?

## Answer by AlRacoon (score 2, accepted)

https://quant.stackexchange.com/a/37810

Yes, it is the borrow rate that the short seller pays to borrow the stock from the long holder. The rate increases as the stock goes "special"--meaning that there is a large demand too borrow stock from short sellers.

There are a number of investors, such as index funds and pension funds that require them to hold all the stock in an index. Therefore they do not make any market calls on individual stocks. As such, the performance on their portfolio is compared to the performance of the index they are trying to track. They increase their returns relative to the index by lending the shares they are required to hold to the short sellers.

Shown in full with attribution under the source's licence. Licence: CC BY-SA 4.0 (Stack Exchange)

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