Daripada Wikipedia, ensiklopedia bebas.
- skuriti hutang (seperti wang kertas, bon-bon dan debentur),
- sekuriti ekuiti , e.g., saham biasa; dan,
- kontrak-kontrakterbitan, seperti kontrak hadapan, futures, options and swaps.
- The official definition of a security given really in the Securities Exchange Act of 1934 is: "Any note, stock, treasury stock, bond, debenture, certificate of interest or participation in any profit-sharing agreement or in any oil, gas, or other mineral royalty or lease, any collateral trust certificate, preorganization certificate or subscription, transferable share, investment contract, voting-trust certificate, certificate of deposit, for a security, any put, call, straddle, [[option (finadeposit, or group or index of securities (including any interest therein or based on the value thereof), or any put, call, straddle, option, or privilege entered int, o on a national securities exchange relating to foreign currency, or in general, any instrument commonly known as a "security"; or any certificate of interest or participation in, temporary or interim certificate for, receipt for, or warrant or right to subscribe to or purchase, any of the foregoing; but shall not include currency or any note, draft, bill of exchange, or banker's acceptance which has a maturity at the time of issuance of not exceeding nine months, exclusive of days of grace, or any renewal thereof the maturity of which is likewise limited."