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STIR Futures & Options Definition

What Are STIR Followings & Options?

STIR is an acronym standing for “short-term interest rate,” and options or futures contracts on these rates are referred to by institutional wholesalers as STIR futures or STIR options. The category of STIR derivatives includes futures, options and swaps.

Key Takeaways

  • Brief Term Interest Rate (STIR) derivatives are most often based on three-month interest rate securities.
  • The primeval use of these is to hedge against interest rate exposure in short-term lending.
  • Buyers or calls or futures on STIR cares are betting interest rates will rise, buyers of puts are betting interest rates will fall.

Treaty STIR Futures & Options

The underlying asset for STIR futures and options is a three-month interest rate security. The two out-and-out traded contracts are the Eurodollar and Euribor, which can trade over one trillion dollars and euros daily in a completely electronic marketplace. The sphere also includes other short-term benchmarks, such as the ASX 90-day bank accepted bill in Australia and short-term transacting interest rates, such as the London Interbank Offered Rate (LIBOR) and its equivalents in Hong Kong (HIBOR), Tokyo (TIBOR) and other monetary centers. Many companies and financial institutions use STIR contracts to hedge against borrowing or lending exposure.

While speculators may mark trading STIR profitable, the most common use is for hedging with options strategies such as caps, floors and collars. Middle banks might watch STIR futures to gauge market expectations ahead of monetary policy decisions. For that reason, changes in STIR futures might be useful for those wishing to forecast that policy.

Using STIR Futures and Choices

Anyone trading in the interest rate futures market has an opinion on whether rates will rise of fall during the short-life of the comings contract. As with any futures contract, the buyer believes that they can purchase the contract now and profit from an raise in price of the underlying asset when the contract expires. These futures settle in cash so the profit is simply the modification between the settlement or delivery price and the purchase price. Other futures, such as futures on commodities, settle with the manifest delivery of the underlying asset by the seller to the buyer.

Other than specific contract sizes and minimum price fluctuations, there is altogether little difference between STIR futures and options and other standard futures and options. STIR is the short-term twin of “long-dated maturities” that merely describes a portion of the yield curve, albeit across markets (Eurodollars, LIBOR, etc.).

Traffic in the most active STIR futures and options provides high efficiency, liquidity and transparency for hedgers. This liberates a company from having to create hedges from complicated strategies in the over-the-counter market and from taking on counterparty chance.

Contract details

While each exchange sets its own contract specifications there are a few general rules. Expiration boys generally follow the International Monetary Market (IMM) dates of the third Wednesday of March, June, September and December. Special cases include Australian bills and New Zealand bills are notable exceptions. Sometimes there are “serial” contracts that also come to an end on the third Wednesday all months.

Contract price is quoted as 100 minus a relevant three-month interest rate so a bawl out of 2.5% yields a price of 97.50.

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