<p>Contango is a market condition in which the price of a futures contract for a commodity or financial instrument exceeds the expected spot price at the contract's maturity. It reflects the cost of carrying the underlying asset, including storage, insurance, financing, and convenience yield, and is common in commodities markets where holding physical inventory incurs expenses.</p>

<h2>How It Works</h2>
<p>In a futures market, traders agree today to buy or sell an asset at a set price on a future date. When the market is in contango, the forward curve slopes upward: each successive contract trades at a higher price than the nearer‑dated one. This price difference compensates holders for the cost of carry. If the convenience yield (the benefit of holding the physical asset) is low relative to financing and storage costs, the futures price must rise above the spot to induce sellers to defer delivery. Arbitrageurs can exploit contango by buying the spot asset, financing its purchase, and selling the corresponding futures contract, locking in a risk‑free profit equal to the carry cost.</p>

<h2>Why It Matters</h2>
<p>Contango signals market expectations about future supply and demand. For producers, it can encourage increased output today because selling futures locks in higher future revenues. For consumers and investors, contango raises the cost of rolling over futures positions, which can erode returns in commodity‑linked exchange‑traded funds (ETFs) that continuously buy near‑dated contracts and sell expiring ones. A practical example: crude oil often exhibits contango when global inventories are high; an oil ETF that rolls its contracts each month may lose value even if spot prices stay flat, as it repeatedly sells low‑priced near contracts and buys higher‑priced later contracts.</p>