Equity security
Equity security means any security representing an ownership interest in an enterprise (for example, common, preferred, or other capital stock) or the right to acquire (for example, warrants and call options) or dispose of (for example, put options) an ownership interest in an enterprise at fixed or determinable prices. However, the term does not include Federal Home Loan Bank stock, convertible debt, or preferred stock that by its terms either must be redeemed by the issuing enterprise or is redeemable at the option of the investor.