Physical delivery vs cash settlement: what happens when a futures contract expires
On 20 April 2020, the front-month WTI crude oil futures contract closed at −USD 37.63 per barrel—the first negative price in the contract's history. Crude oil was not worthless. The problem was settlement mechanics. Holders of expiring long positions could not take physical delivery of crude oil and had no storage available. With no buyers and an imminent obligation to receive 1,000 barrels of crude oil per contract, sellers accepted any price to exit. Settlement method—physical delivery or cash—is not a technicality. It determines what happens to your position if you do not close it before expiry.
The two settlement methods
At expiry, every futures contract must be resolved. There are two ways this happens.
Cash settlement. At expiry, the contract is settled by a cash payment equal to the difference between the final settlement price and the investor's entry price. No underlying asset changes hands. The investor's long or short position is simply closed at the final reference price—typically an exchange-calculated average of the underlying on the last trading day. Most equity index futures, interest rate futures, and volatility futures use cash settlement. The S&P 500 E-mini (ES), the Euro Stoxx 50 (FESX), VIX futures, and the majority of bond futures all settle in cash. An investor holding an ES contract to expiry receives or pays the cash difference. No shares of any company are delivered.
Physical delivery. The short side of the contract delivers the underlying commodity to the long side. For crude oil (NYMEX WTI, CL), this means 1,000 barrels of West Texas Intermediate crude oil delivered to Cushing, Oklahoma. For gold (COMEX, GC), it means 100 troy ounces of gold at an approved vault. For wheat (CBOT, ZW), it means 5,000 bushels of approved-grade wheat. Physical delivery is the norm for most commodity futures: crude oil, natural gas, gold, silver, copper, corn, soybeans, wheat, and most agricultural contracts.
Why settlement method matters for investors
For cash-settled contracts, expiry is operationally simple. If you hold to expiry, the position closes automatically at the final settlement price. There is no operational risk beyond normal price risk.
For physically settled contracts, holding to expiry means you must be prepared to deliver or receive the physical commodity. Long holders must have the infrastructure, regulatory permissions, and logistical capability to accept the delivery. For individual investors, commodity traders without warehouse capacity, or systematic strategies managing financial portfolios, physical delivery is not an option. The rule for physically settled contracts is therefore absolute: close or roll the position before first notice day—the first date on which the short can issue a delivery notice to the long.
The April 2020 event illustrates what happens when this rule is ignored at scale. As the May 2020 WTI contract approached expiry, storage capacity at Cushing was nearly full following the collapse in oil demand during the early pandemic. Long holders—many of whom were retail investors in leveraged oil ETFs and products—needed to exit but found no buyers willing to take on the obligation to receive physical crude oil. The long holders accepted any price to avoid delivery, driving the settlement price below zero for the first time in the contract's history.
Which contracts use which method
Physically settled: crude oil (CL), natural gas (NG), gold (GC), silver (SI), copper (HG), and most agricultural futures including corn (ZC), soybeans (ZS), and wheat (ZW).
Cash-settled: S&P 500 E-mini (ES), NASDAQ-100 E-mini (NQ), Euro Stoxx 50 (FESX), most interest rate futures (ZN, ZB, ZF), VIX futures, and most currency futures. The settlement method for any contract can be verified in the exchange's contract specifications—always check before trading an unfamiliar contract for the first time.
Limitations
The boundary between physically settled and cash-settled contracts is not always intuitive. Some contracts that appear financial are physically settled: many individual equity futures and some bond futures require physical delivery. Some commodity contracts that might appear to require delivery are in fact cash-settled. Contract specifications change over time—exchange rule amendments can alter settlement procedures. Always verify the current contract specification directly with the exchange before entering a position in an unfamiliar futures contract.
Even for cash-settled contracts, holding to the last trading day is not without risk. Thin liquidity in the expiry session can produce final settlement prices that diverge from where the market was trading during regular hours, particularly for less liquid contracts. Most systematic strategies roll well before last trading day to avoid this risk.
Physical delivery and cash settlement in pfolio
pfolio's continuous futures chain builder rolls positions before expiry according to the user-configured roll date parameter—typically five to ten days before the contract's first notice day or last trading day. pfolio-constructed continuous series therefore never reach physical settlement mechanics: positions are always rolled before the delivery obligation can materialise. For analysis purposes, pfolio clearly identifies the settlement method for each futures instrument in the platform, so users understand which contracts require active roll management and which settle in cash automatically.
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