Warrant 

A corporate-issued certificate giving the holder the right to buy securities at a stipulated price within a given time period.

Will

A written and signed statement, made by an individual, which provides for the disposition of their property when they die.

Wire Transfer

Electronic transfer of funds; usually involves large payments.

Withholding 

Used in the context of securities, the illegal practice of a public offering participant keeping some shares in a private account or with a family member, employee, or dealer to profit from the higher market price of a hot issue. 

With Rights

Shares sold accompanied by entitlement the buyer to buy additional shares in the company's rights issue.

Working Capital

The difference between current assets and current liabilities. There are some variations in how working capital is calculated. Variations include the treatment of short-term debt. In addition, current assets may or may not include cash and cash equivalents, depending on the company.