Greenshoe Option

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DEFINITION of 'Greenshoe Option'

A provision contained in an underwriting agreement that gives the underwriter the right to sell investors more shares than originally planned by the issuer. This would normally be done if the demand for a security issue proves higher than expected. Legally referred to as an over-allotment option.

A greenshoe option can provide additional price stability to a security issue because the underwriter has the ability to increase supply and smooth out price fluctuations if demand surges.

INVESTOPEDIA EXPLAINS 'Greenshoe Option'

Greenshoe options typically allow underwriters to sell up to 15% more shares than the original number set by the issuer, if demand conditions warrant such action. However, some issuers prefer not to include greenshoe options in their underwriting agreements under certain circumstances, such as if the issuer wants to fund a specific project with a fixed amount of cost and does not want more capital than it originally sought.

The term is derived from the fact that the Green Shoe Company was the first to issue this type of option.

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