What it means
The defining feature is that the contract sits one step away from the asset. Buying a share makes you an owner with voting rights and dividends, while buying an option on that share gives you a claim tied to its price for a fixed period and nothing else.
The main types are easy to keep straight. Options give the right but not the obligation to buy or sell at a set price, futures and forwards commit both sides to a transaction at a set price on a set date, and equity swaps exchange the return on a share or index for a stream of interest payments.
Businesses use these instruments for reasons that have nothing to do with speculation. A company with an employee share scheme may hedge the cost of shares it will need to deliver, a founder with a concentrated holding may use a collar to protect against a fall without selling, and a fund manager may buy index futures to stay invested while cash is being moved.
Two numbers matter more than any others: the notional value and the premium. Notional is the value of shares the contract controls, so twenty option contracts covering 100 shares each control 2,000 shares, and it is the notional rather than the premium that measures the real exposure.
That gap between what you pay and what you control is leverage, and it cuts both ways. An option can return several times its cost on a modest move in the underlying share, and it can also expire completely worthless while the share itself has barely fallen, which is why position sizing on notional rather than on cost is the discipline that keeps derivative use sensible.
In practice
Real-world examples.
Example
A pension fund holding $200,000,000 of shares expects a volatile few months around an election but does not want to sell and trigger tax and trading costs. It buys index put options covering roughly two thirds of the portfolio, accepting a premium cost of about 1.5% of the protected value as the price of limiting the downside.
Example
A founder holding shares worth $30,000,000 in a company she has just taken public is locked up for twelve months and cannot sell. She enters a collar, buying a put at 85% of the current price and selling a call at 120%, which caps her upside but protects most of the value at close to zero net premium.
Example
A corporate treasury team needs to deliver shares to employees when a long-term incentive plan vests in three years and does not want to buy them all today. It uses a forward purchase contract to lock the price now, converting an uncertain future cost into a fixed one for budgeting purposes.
Formula
Calculation
Premium paid = premium per share x shares per contract x number of contracts
Call option payoff at expiry = maximum of zero, or (share price at expiry - strike price) x shares per contract x number of contracts
Profit = payoff - premium paid
Breakeven share price = strike price + premium per share
An investor buys 20 call option contracts on a listed engineering company. Each contract covers 100 shares, the strike price is $50 and the premium is $4 per share. The shares currently trade at $50.
Shares controlled = 20 x 100 = 2,000
Premium paid = $4 x 2,000 = $8,000
Notional value controlled = 2,000 x $50 = $100,000
Breakeven = $50 + $4 = $54
If the shares finish at $62 on expiry:
Payoff = ($62 - $50) x 2,000 = $24,000
Profit = $24,000 - $8,000 = $16,000, a return of $16,000 / $8,000 = 200% on the premium
Buying the 2,000 shares outright would have cost $100,000 and produced a profit of ($62 - $50) x 2,000 = $24,000, a return of 24%.
If instead the shares finish at $48:
The option expires worthless, the payoff is zero and the loss is the full $8,000, or 100% of the amount invested.
The 2,000 shares would have fallen to $96,000, a loss of $4,000, or 4%.
The same 200% upside and 100% downside sit on top of a share that moved 24% up or 4% down, which is the leverage effect stated as plainly as it can be.Case study
Seen in the real world.
This is an illustrative and fictional example. Larkspur Family Office, an invented manager of a single family's wealth, held a $48,000,000 position in one listed company representing 62% of its liquid assets, inherited from the sale of a family business. The family wanted to reduce the risk without selling in a single year and creating a large tax event.
The investment committee bought put options struck 10% below the current price covering half the position, at a premium of 2.4% of the protected value, costing $576,000 for twelve months of protection on $24,000,000. It funded that cost by selling call options struck 18% above the current price on the same half of the position, which brought in $520,000, leaving a net cost of $56,000.
Over the year the share fell 22%. The unprotected half lost about $5,280,000 while the protected half lost roughly $2,400,000 before the puts took effect, with the remainder covered by the options. The family kept its holding, avoided a forced sale at the bottom, and afterwards adopted a written policy that no single holding could exceed 25% of liquid assets without an explicit hedge in place.
Watch out
Common mistakes.
- Sizing a derivative position by what it costs rather than by the notional value it controls, which is how a small premium turns into an outsized exposure.
- Forgetting that options have an expiry date, so being right about the direction of a share but wrong about the timing produces a total loss rather than a delayed gain.
- Selling call options against shares purely to collect premium without accepting that the upside above the strike price has genuinely been given away.
Questions
People also ask.
Do equity derivatives give the holder dividends or voting rights?
No, a derivative holder has no ownership of the underlying shares, though total return swaps and some forward contracts are structured to pass on the economic value of dividends.
Are equity derivatives only for speculation?
Not at all, the largest users are hedgers such as pension funds, corporate treasuries and market makers who use them to reduce risk rather than to add it.
What is the biggest risk beyond price movement?
Counterparty risk on contracts traded privately rather than on an exchange, which is why exchange-traded derivatives use a clearing house that stands between the two sides.
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