stock warrant

nouns

a type of security issued by a corporation (usually together with a bond or preferred stock) that gives the holder the right to purchase a certain amount of common stock at a stated price
"as a sweetener they offered warrants along with the fixed-income securities"
stock warrant, stock-purchase warrant, warrant
a written certificate that gives the holder the right to purchase shares of a stock for a specified price within a specified period of time
stock warrant
is a type of (narrower)
a written assurance that some product or service will be provided or will meet certain specifications
guarantee, warrant, warrantee, warranty