Skip to content
All library documents

What Determines the Financing Spread on an Equity Swap

Article Quant Q&A · Author: Boommer

Summary

An equity swap exchanging an equity return for LIBOR plus a spread is initially structured so the two legs have offsetting value. The financing spread is linked to the cost and terms of replicating the equity exposure through stock borrowing, lending, and repo. In this framing, receiving equity performance resembles buying the shares and lending them, while paying equity performance resembles borrowing and shorting them.

The spread can vary with the stock’s borrow availability and financing rate, transaction term, early termination rights, notice period, collateral amount and currency, and cross-currency financing costs. Counterparty credit and collateralization also affect the economics. A separate response notes that dealers may adjust the fair spread to include trading profit. The discussion offers no complete pricing calculation; illustrative spread ranges are explicitly approximate, and the exact result depends on transaction terms and market conditions.

Key ideas

  • The spread balances the equity and financing legs at inception before any dealer markup.
  • Repo and stock-borrow costs help determine the financing level.
  • Term, break rights, collateral, and financing currency can change the spread.
  • Counterparty credit and collateralization affect the risk and pricing of the swap.

Tags

Full text
# Spread over LIBOR on a Equity Swap


# Spread over LIBOR on a Equity Swap












Does anyone how banks determine the spread over LIBOR on a Equity Swap?

Example:

Party A pays the return on SPTR to Party B

Party B pays 1M LIBOR + 40 bps to Party A

Does anyone know how the 40 bps spread would be determined?

Thank you!

## Answer by Lliane (score 2)

https://quant.stackexchange.com/a/31815

I realize the previous answer doesn't answer anything, yes the spread over LIBOR on the swap is such that the swap has 0 value at inception, but how do you compute the value of the equity leg ?

The spread on an equity swap depends on the level at which you can repo the underlying equity if you replicate the swap through a buy and sell transaction + a stock loan (its slightly different due to the regulatory treatment, a stock loan is on the balance sheet whereas a swap is not).

A swap from the "equity payer" perspective is the same as borrowing the stock, then shorting it. From the "equity receiver" perspective it is buying the stock and lending it.

The spread level will depend on this implicit lending/borrowing transaction terms :

- Is the transaction breakable before its end or not, with which notice period ?

- What is the term (duration of the transaction) ?

- What is the collateral (independent amount) level arranged, in which currency ?

- The repo itself (how hard is it to borrow the security) ?

- Additional considerations such as cross-currency basis if the financing currency is different from the underlying currency, etc.

## Answer by crunch (score 0)

https://quant.stackexchange.com/a/16797

Unless the counterparty specifically bought the swap, then at inception the swap had a 0 value, i.e. the spread is that value which equates the two legs. Of course, it's usually bumped up (bank receiving) or down (bank paying) as the trader's profit.

## Answer by milkmotel (score 0)

https://quant.stackexchange.com/a/32364

The spread is determined by how much the notional value of the swap is collateralized. If the swap is 0% collateralized, your rate can be as high as L+600. If it's fully collateralized, as low as L+50.

If you keep 10% of the notional amount as pledged collateral, then any single day loss over 10% in SPTR would require additional margin to be posted above the collateral pool. The spread is a function of the credit-worthiness of the counterparty, the notional amount, the percentage of pledged collateral, and the assumed distribution of returns on the swapped instrument.

None of this walks through the exact method, and the ranges on the spreads of LIBOR are neighborhood figures, but that is how they approach it.

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.