When it comes to investments, a subscription warrant is a popular instrument used to attract investors. Put simply, it allows existing shareholders to purchase additional shares at a predetermined price. However, there are several synonyms for the word subscription warrant, including stock option, purchase warrant, and call warrant. While each term may have slight variations in how it is executed, they all offer investors the ability to purchase additional shares at a future date and price. Regardless of which term you use, subscription warrants are a useful tool for investors looking to expand their holdings and increase their potential profits in a particular company.