X is an extension to a ticker symbol. It denotes that the security is a mutual fund.   For example, Vanguard offers a variety of mutual funds. The tickers end in X. Many companies have seve...

X-efficiency describes a company's inability to get the maximum output for its inputs due to a lack of competitive pressure. Economist Harvey Leibenstein, a Harvard professor who studied the psyc...

An X-mark signature is a mark made by a person who is not able to sign his or her name. Let's say John Doe suffers a traumatic brain injury and can no longer read or write. He marries his high sc...

XBRL stands for Extensible Business Reporting Language. XBRL is a code through which companies and other entities can communicate business information. It is part of the XML (Extensible Markup Langua...

XD is a symbol to indicate that a security is trading ex-dividend. The ex-dividend date is the day on which all shares bought and sold no longer come attached with the right to receive the most recen...

XDIS is a symbol to indicate that a security is trading ex-dividend (or ex-distribution, as the abbreviation suggests). The ex-dividend date is the day on which all shares bought and sold no longer c...

Xenocurrency is a currency that trades in foreign markets. For example, Euros trade in American markets, making the Euro a xenocurrency. Xenocurrency is basically foreign currency. The world is full...

Xetra is a trading system owned by the Deutsche Borse (German stock exchange). Started in 1997, about 250 participants (mostly brokerages, dealers, and market makers) in 19 countries use Xetra, which...

An XPO is a perpetual option. An option gives the holder the right, but not the obligation, to purchase (or sell) 100 units of a particular underlying security at a specified strike price on or befor...

XRT is an extension to a ticker symbol. It denotes that the security is trading without rights. Stock rights are instruments that companies give to shareholders. They allow shareholders to buy more s...

XW is a ticker-symbol extension that signifies that a stock is trading ex-warrant. Warrants are securities that give the holder the right, but not the obligation, to buy a certain number of securitie...