greenshoe option
noun[C]
FINANCE,STOCK MARKETukusanagreementthatallowssomeone whosellssharesfor acompanytosellmoresharesthan thecompanyhadoriginallyplannedtosell:
Greenshoeoptionstypicallyallowunderwriters tosellup to 15% moresharesthan theoriginalnumberset by the issuer.
See also
over-allotment