Derivatives explained: forwards, futures, options and swaps

A derivative is a contract whose value depends on something else: a stock, an index, an interest rate, a currency, a commodity or even whether a borrower defaults. That "something else" is the underlying. The contract itself is a set of promises between two parties about money or goods that will change hands later, at terms fixed today.

Derivatives sound exotic, but they are everywhere in finance. A farmer who agrees today on the price of next autumn's harvest has a derivative. So does a company that locks in the dollar value of a euro payment due in six months, a bank that swaps fixed-rate interest for floating, and the leveraged ETF in your brokerage account. This guide explains the four building blocks (forwards, futures, options and swaps), the vocabulary that applies to all of them, why people use them, and the risks that come with promises about the future. Separate guides go deeper on futures and options.

The vocabulary every derivative shares

• Underlying: what the contract's value depends on.
• Notional (or contract) value: the amount of the underlying the contract covers, valued at the current price. It measures exposure. It is usually far larger than the cash that changes hands when the contract is opened.
• Maturity or expiration: when the contract ends.
• Settlement: physical (the asset is delivered) or cash (only the difference in value is paid).
• Long and short: the long side gains when the underlying rises; the short side gains when it falls. For an option, the buyer is "long" the option and the writer is "short".
• Counterparty: the other side of your contract, the party whose promise you depend on.

The four basic contracts

Forwards: a private deal to trade later

A forward is an agreement between two parties to buy or sell an amount of something on a future date at a price agreed now. It is negotiated privately, over the counter (OTC), so the size, date and terms can be whatever the two sides want. Nothing is usually paid up front, and the whole settlement happens at the end.

The weakness of a forward is that it depends entirely on the other side honoring it, and it cannot easily be sold to someone else.

Futures: a standardized forward with a clearinghouse

A futures contract is a forward with the custom features removed. An exchange sets the size, quality, delivery months and minimum price move, and every trade is backed by a clearinghouse that becomes the buyer to every seller and the seller to every buyer. Gains and losses are settled every day (marked to market), and both sides post margin as a performance deposit.

For example, CME's WTI crude oil futures contract covers 1,000 barrels, and its minimum price move of $0.01 a barrel is worth $10 per contract. At September 2026's average WTI price of $97.31 a barrel (EIA data), one contract carried a notional value of about 1,000 × $97.31 = $97,310, and each $1 move in the oil price changed its value by $1,000.

Weekly closes of the front-month futures show what that means in practice. The price was $56.66 in the week of December 15, 2025 and $104.10 on October 30, 2026. A trader who was long one contract over that stretch (rolling it as each month expired, which adds its own gains or costs; see Contango, backwardation and roll yield: why USO lags oil) would have gained roughly ($104.10 − $56.66) × 1,000 = $47,440 on the price change. Whoever was short lost the same amount. Futures margin, daily settlement and leverage get their own guide: Futures margin and leverage: initial, maintenance and margin calls.

Options: a right, not an obligation

An option gives its buyer the right, but not the obligation, to buy (a call) or sell (a put) the underlying at a fixed strike price until or on an expiration date. The buyer pays a premium for that right; the seller (writer) collects it and takes on the obligation to perform if the buyer exercises. Listed stock and index options in the US are standardized and cleared; others trade OTC.

Options differ from the other three contracts in one fundamental way: their payoff is asymmetric. A call buyer's loss is capped at the premium, while the gain grows as the price rises. The seller's position is the mirror image. Options basics: how calls and puts work, with payoff diagrams works through calls, puts and payoff diagrams, and Option Greeks: delta, gamma, theta, vega and rho with examples explains how option prices respond to the underlying, time and volatility.

Swaps: exchanging streams of cash flows

A swap is an agreement to exchange one stream of payments for another over a period. The amounts are calculated on a notional principal that usually never changes hands.

Other common swaps include currency swaps (exchanging payments in two currencies), credit default swaps (one side pays a regular premium; the other pays out if a named borrower defaults; see Credit Default Swap (CDS)) and total return swaps, in which one side pays the full return of an asset or index in exchange for a financing rate. The SEC's investor bulletin notes that leveraged and inverse ETFs pursue their objectives through swaps, futures and other derivatives; total return swaps with banks are a typical tool (Leveraged and inverse ETFs: daily reset math and volatility drag).

Why people use derivatives

Hedging. Reducing a risk you already have: the exporter's currency exposure, an airline's fuel bill, a pension fund's sensitivity to interest rates, a stock portfolio protected with index puts. A hedge gives up some upside to remove some downside.

Speculation. Taking a view on the underlying with less cash up front than buying it outright. That leverage magnifies both gains and losses.

Arbitrage. Profiting from price differences between a derivative and its underlying, such as a futures contract priced out of line with the cost of buying the asset and holding it. Arbitrage is what keeps derivative prices tied to their underlyings.

Access and efficiency. Getting exposure that is hard to get otherwise, such as a commodity you cannot store, or adjusting a large portfolio quickly without trading every security in it.

Hedgers and speculators need each other. Someone has to take the other side of the exporter's forward or the farmer's futures sale, and the speculator is paid, on average, for bearing the risk the hedger wants to shed.

Notional value versus money at risk

Notional value is how big a derivative is, not how much it costs. A newly agreed swap or forward at market rates is worth roughly zero to both sides on day one; its value builds up only as the underlying moves. A futures contract requires margin of a small fraction of its notional value. A bought option costs only its premium.

That gap between exposure and cash is why derivatives can be dangerous. If a contract worth $97,000 of oil is held with a deposit of, say, $5,000 (an illustrative figure; exchanges and brokers set actual margins), a 5% move in the oil price, about $4,900, nearly wipes out the deposit. Large notional totals reported for the derivatives market also overstate the money actually at risk, because many positions offset one another and the cash amounts exchanged are a small fraction of notional.

Counterparty risk and clearing

Every derivative is only as good as the promise behind it. With a private forward or swap, if your counterparty fails, your hedge or your gain may disappear with it. Two mechanisms reduce that risk.

• Collateral. OTC contracts typically require parties to post collateral as values change, so a default leaves less unpaid.
• Central clearing. A clearinghouse stands between buyer and seller, collects margin from both, settles gains and losses daily and keeps a default fund. Exchange-traded futures and listed options already worked this way.

After the 2008 crisis, in which losses on OTC derivatives, particularly credit default swaps, played a prominent part (The 2008 financial crisis: housing, Lehman, TARP and the 57% fall), Title VII of the Dodd-Frank Act brought swaps under US regulation. Under section 723, which became section 2(h) of the Commodity Exchange Act, swaps that the Commodity Futures Trading Commission (CFTC) determines must be cleared have to go through a registered clearing organization unless an exception applies. The CFTC's first clearing determination, in 2012, covered certain classes of interest rate swaps and credit default swaps. As of 2026, the CFTC oversees futures and most swaps, and the SEC oversees security-based swaps and options on securities.

Pitfalls and limitations

Leverage cuts both ways. Small moves in the underlying can produce losses larger than the cash put down; for futures and written options, losses can exceed your account balance.

Basis risk. A hedge rarely matches the exposure exactly. An airline hedging jet fuel with crude oil futures is exposed to the gap between the two prices.

Liquidity. Far-dated futures, unusual strikes and custom OTC contracts can be hard to exit at a fair price.

Complexity in disguise. Leveraged ETFs, structured notes and some annuities contain derivatives. Their behavior follows the derivative's rules, not the label on the product.

Counterparty and operational risk. Clearing reduces but does not eliminate the risk that someone in the chain fails.

The four contracts side by side

How Finabase does it

The futures page lists 61 contracts, including stock-index futures (S&P 500, Nasdaq, Dow, Russell 2000, VIX), commodities (gold, silver, copper, WTI and Brent crude, natural gas, grains) and bond futures (US 2-, 10- and 30-year and several foreign government bonds), with returns over periods from a week to two years. Each contract has a symbol page with a chart, for example WTI crude oil and gold. For options, the option chain shows calls and puts for a stock or ETF with bid, ask, last price, volume, open interest and implied volatility for each strike and expiration.

Finabase has no data on forwards or swaps, which trade privately, and it does not show futures contract specifications or margin requirements; the contract-size and notional figures on this page come from CME's published specifications and our arithmetic.

Frequently asked questions

What is a derivative in simple terms?

It is a contract whose value depends on the price of something else, such as a stock, an index, an interest rate, a currency or a commodity. The two parties agree today on terms for an exchange of money or goods in the future.

What are the four main types of derivatives?

Forwards, futures, options and swaps. Forwards are custom private agreements to trade later; futures are standardized forwards traded on exchanges; options give the buyer a right rather than an obligation; swaps exchange one stream of payments for another.

Are derivatives only for speculation?

No. Much of their use is hedging: companies, farmers, airlines, banks and pension funds use derivatives to reduce risks they already carry, such as currency, commodity-price or interest-rate risk. Speculators take the other side and bear that risk.

What does notional value mean?

It is the size of the underlying exposure a contract represents, valued at current prices. One WTI crude futures contract covers 1,000 barrels, so at $97.31 a barrel its notional value is about $97,310, even though only a margin deposit is needed to hold it.

What is counterparty risk?

It is the risk that the other party to your contract fails to pay. Exchange-traded futures and options manage it with a clearinghouse and daily margin, and US rules now require many swaps to be centrally cleared too.

Summary

A derivative is a contract whose value comes from an underlying asset, rate or event. Forwards are private agreements to trade later; futures standardize them and add a clearinghouse and daily settlement; options sell a right rather than an obligation for a premium; swaps exchange streams of payments on a notional amount that usually never changes hands. The same contracts serve hedgers who want less risk and speculators who want more, and before costs one side's gain is the other's loss. Their leverage, the gap between notional exposure and cash posted, makes them powerful and dangerous, and their reliance on promises makes counterparty risk central, which is why US rules since Dodd-Frank push many swaps into central clearing.