What is security?
A security is a tradable financial asset. The term commonly
refers to any form of financial instrument, but its legal definition varies by
jurisdiction. In some jurisdictions the term specifically excludes financialinstruments other than equities and fixed income instruments. In some
jurisdictions it includes some instruments that are close to equities and fixedincome, e.g. equity warrants. In some countries and languages the term
"security" is commonly used in day-to-day parlance to mean any form
of financial instrument, even though the underlying legal and regulatory regime
may not have such a broad definition.
In the United Kingdom, the national competent authority for
financial markets regulation is the Financial Conduct Authority; the definition
in its Handbook of the term "security"[1] applies only to equities,
debentures, alternative debentures, government and public securities, warrants,
certificates representing certain securities, units, stakeholder pension schemes,
personal pension schemes, rights to or interests in investments, and anything
that may be admitted to the Official List.
In the United States, a security is a tradable financial
asset of any kind.[2] Securities are broadly categorized into:
debt securities (e.g., banknotes, bonds and debentures)
equity securities (e.g., common stocks)
derivatives (e.g., forwards, futures, options and swaps).
The company or other entity issuing the security is called
the issuer. A country's regulatory structure determines what qualifies as a
security. For example, private investment pools may have some features of
securities, but they may not be registered or regulated as such if they meet
various restrictions.
Securities may be represented by a certificate or, more
typically, "non-certificated", that is in electronic (dematerialized)
or "book entry" only form. Certificates may be bearer, meaning they
entitle the holder to rights under the security merely by holding the security,
or registered, meaning they entitle the holder to rights only if he or she
appears on a security register maintained by the issuer or an intermediary.
They include shares of corporate stock or mutual funds, bonds issued by
corporations or governmental agencies, stock options or other options, limited
partnership units, and various other formal investment instruments that are
negotiable and fungible.
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