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In finance, a security is an instrument representing ownership (stocks), a debt agreement (bonds) or the rights to ownership (derivatives). A security is essentially a contract that can be assigned a value and traded.
- "Security Definition", Investopedia, referenced 2011-11-17.
- The Paradox of Asset Pricing. By Peter Bossaerts. Princeton, N.J.: Princeton University Press, 2002. (pdf) Richard C. Grimm, 2003
- Security (finance) at Wikipedia