What are the characteristics and risks of ETFs, futures contracts, and options?

"because they offer a convenient way to diversify and are professionally managed. Exchange-traded funds (ETFs) are similar to mutual funds but trade on stock exchanges similar to common stock. Futures contracts are legally binding obligations to buy or sell specified quantities of commodities or financial instruments at an agreed-on price at a future date. They are very risky investments because the price of the commodity or financial instrument may change drastically. Options are contracts that entitle the holder the right to buy or sell specified quantities of common stock or other financial instruments at a set price during a specified time. They, too, are high-risk investments."