Derivative (finance)

In the world of finance, a derivative is a specialized contract between a buyer and a seller.

Unlike a standard purchase, a derivative's value is not independent. Instead, its value is derived from the performance of an underlying asset. This underlying asset, or "underlier," can be many different things. It might be a physical commodity like corn or oil. It could also be a financial instrument like a stock or a bond. Other underliers include currency exchange rates, interest rates, or even price indices. Because the contract tracks these variables, it allows people to trade the risk of an asset without actually owning the asset itself.

Every derivative contract must contain four essential elements to function. First, there must be an underlier that will be bought or sold. Second, there must be a specific future act, such as a sale or a purchase. Third, the contract must establish a fixed price for that future transaction. Finally, the contract must set a specific future date by which the act must occur. These components allow the parties to define exactly how they will interact with the market in the future. By setting these terms, the contract creates a predictable framework for a transaction that has not happened yet.

Financial experts generally divide derivatives into two main categories: "lock" products and "option" products. Lock products include instruments like forwards, futures, and swaps. In these agreements, both the buyer and the seller are obligated to fulfill the terms of the contract. They are "locked" into the price and the date. Option products, such as interest rate options, work differently. An option gives the buyer the right to enter the contract, but not the obligation.

Because the buyer has this choice, they usually pay an upfront fee called a premium. This is very similar to how people pay for home or auto insurance. If the event the buyer wanted to protect against never happens, they can simply let the option expire.

People use these complex tools for several distinct purposes. One major use is "hedging," which is a method of risk management.

For example, a wheat farmer might use a futures contract to lock in a selling price. This protects the farmer if the market price of wheat drops before harvest. Another use is "speculation," where a person makes a financial bet. Speculators hope to profit by correctly predicting how an underlier's price will move. Derivatives can also provide "leverage." This means a small change in the price of the underlier can cause a much larger change in the value of the derivative. Some even use them to access markets that are otherwise hard to trade, such as weather-related derivatives.

There is a long history of people using similar arrangements. The oldest recorded example involves the ancient Greek philosopher Thales. Aristotle wrote that Thales made a profit through a contract involving olives.

While Aristotle called this a monopoly rather than a derivative, it shared the same basic idea. Much later, the Dojima Rice Exchange in Japan began trading rice futures in the eighteenth century. In more recent history, "bucket shops" were a known example of such trading before they were outlawed in the United States in 1936. These historical examples show that the desire to manage future uncertainty is very old.

Today, the scale of the derivative market is massive and can be difficult to grasp. Derivatives are one of the three main categories of financial instruments, alongside equity and debt.

In June 2011, the over-the-counter (OTC) market—which refers to private trades made outside of an exchange—was valued at approximately $700 trillion. Exchange-traded derivatives added another $83 trillion to that total. Some economists warn that these "notional" values can be misleading. For instance, in 2010, the aggregate OTC market exceeded $600 trillion, but the actual estimated value was much lower at $21 trillion. Even so, these figures dwarf the total value of the U.S. stock market or the annual global Gross Domestic Product.

Because of the high risks involved, derivatives are subject to heavy regulation. One specific type, the credit default swap (CDS), is considered particularly risky.

In 2002, investor Warren Buffett famously warned that these could be "financial weapons of mass destruction." Following the 2008 financial crisis, the United States passed the Dodd-Frank Wall Street Reform and Consumer Protection Act in 2010. This law aimed to increase oversight and move more derivatives onto regulated exchanges. This movement is intended to make the global financial system more stable and transparent for everyone.