Why use derivatives: the four benefits

What can a derivative do that the cash market cannot?

A derivative lets you buy, sell or reshape exposure to an underlying price without trading the underlying. That one idea produces four distinct benefits, and the exam asks you to tell them apart.

Benefits of derivativeswhat a derivative can do that the cash market cannot do as well

• Risk allocation, transfer and management Memorize move or reshape exposure without trading the underlying
  • Bridge a timing gap fix a price now for a trade later
  • Create new exposures such as a covered call
• Price (information) discovery Memorize prices reveal expectations
  • Expected prices index and commodity futures
  • Expected rates interest rate futures
  • Expected risk implied volatility from options
• Operational advantages Memorize cheaper and easier than the cash market
  • Lower transaction costs no shipping, storing or insuring
  • Higher liquidity less capital per unit of exposure
  • Low upfront cash margin or premium, not full price
  • Easy short positions no borrowing of the asset
• Market efficiency Memorize mispricing is cheaper to exploit, so prices correct faster

The test for each scenario is to ask what the derivative actually did. Did it move or reshape risk? Did it reveal information? Did it save cash or cost? Or did it make it cheaper to fix a price gap across the market?

Benefit 1: how do derivatives allocate, transfer and manage risk?

The first benefit is risk allocation , and its most common form is risk transfer . A derivative lets a user trade, hold or offset exposure to an underlying without buying or selling it, and it moves the risk to a party who is able and willing to hold it.

Decisions are often made before the matching cash trade is possible. That is the timing gap. A bakery chain must plan six months of flour costs before it knows its sales. An exporter signs a contract today and is paid in 90 days. A derivative agreed today at a pre-agreed price bridges the gap.

$$H = N \times F$$

Derivatives also create exposures that the cash market cannot offer. A covered call (own the asset and sell a call on it) gives up gains above a chosen level in exchange for a premium today. No single cash security has that payoff. The next lessons return to this strategy.

Benefit 2: what is price discovery?

Price discovery means derivative prices reveal information about expected future prices and risk.

• Index futures trade before the stock market opens, so they show where cash prices are likely to start.
• Interest rate futures reveal what the market expects the central bank to do at a coming meeting.
• Commodity futures across maturities show supply and demand between producers, consumers and investors.
• Option prices reveal implied volatility , the market’s estimate of the future risk of the underlying.

These prices are informative, but a futures price is not an unbiased forecast of the future spot price. The next module explains why a futures price differs from the spot price even with no view about direction.

Go deeper How implied volatility is found

An option price depends on the current price of the underlying, the exercise price, the time left, the interest rate and the volatility of the underlying. Every input except volatility can be observed. So you can work backward from the quoted option price to the volatility that would produce it. That volatility is the implied volatility. A high figure before an election, say, tells you the market expects larger price swings. The option pricing module shows the mechanics.

Go deeper Why a futures price can go negative

A futures contract with physical delivery obliges the holder to take the commodity. If storage is full and no one wants more of it, taking delivery has a cost greater than the commodity’s value, so the price to take it can fall below zero. This is rare and it shows what a futures price really measures: the value of owning the delivery obligation, not the value of the commodity in the abstract. The same price signal told producers to slow supply.

Benefit 3: what are the operational advantages?

Operational advantages are the practical savings of using a derivative instead of the underlying. There are four.

1. Lower transaction costs. A commodity derivative needs no shipping, storing or insuring of the physical asset.
2. Higher liquidity. Less capital is needed per unit of exposure, so more participants can trade.
3. Low upfront cash. A futures contract needs initial margin and an option needs only its premium, both small against the price of the asset. This is the upfront cash requirement advantage.
4. Easy shorts. Without a liquid derivative market, taking a short position needs a lender of the asset. A derivative sells exposure directly, so short positions are cheap to take.

$$C = A \times r \times t$$

Exam tip ”Small deposit, big exposure” is an operational advantage. “Moves the risk to someone else” is risk transfer. Do not swap them.

Benefit 4: how do derivatives improve market efficiency?

Market efficiency improves because derivatives need less capital, cost less to trade and make shorting easy. When a price drifts from fundamental value, exploiting the gap is cheaper in the derivative market than in the cash market, so the correction often happens in derivatives first and then spreads to the cash market. The effect is a better-functioning market for everyone, including people who never trade a derivative. That is why this benefit belongs to the market as a whole, not to one user.