"Hedge fund" is a general, non-legal term used to describe private, unregistered investment pools that traditionally have been limited to sophisticated, wealthy investors. Hedge funds are not mutual funds and, as such, are not subject to the numerous regulations that apply to mutual funds for the protection of investors — including regulations requiring a certain degree of liquidity, regulations requiring that mutual fund shares be redeemable at any time, regulations protecting against conflicts of interest, regulations to assure fairness in the pricing of fund shares, disclosure regulations, regulations limiting the use of leverage, and more.

"Funds of hedge funds," a relatively new type of investment product, are investment companies that invest in hedge funds. Some, but not all, register with the SEC and file semi-annual reports. They often have lower minimum investment thresholds than traditional, unregistered hedge funds and can sell their shares to a larger number of investors. Like hedge funds, funds of hedge funds are not mutual funds. Unlike open-end mutual funds, funds of hedge funds offer very limited rights of redemption. And, unlike ETFs, their shares are not typically listed on an exchange.