TWX

TWX is an acronym with multiple historical and financial meanings. Two of the most common referents are the Teletypewriter Exchange Service (TWX), a mid-20th-century private messaging network, and Time Warner, Inc., which formerly traded on the New York Stock Exchange under the ticker symbol TWX.

Teletypewriter Exchange Service refers to a private communications network that connected teletypewriter terminals used by businesses and organizations. Operated beginning in the mid-20th century, TWX enabled the exchange of typed messages over dedicated telephone lines and later data circuits. It offered rapid, direct communication between offices, supplementing or replacing physical telegrams. TWX competed with other private networks and with Telex, and it played a significant role in business communications before the widespread adoption of email, fax, and the broader Internet. The service declined as digital communications technologies supplanted analogue teletype networks, with many operators retiring TWX in the 1980s and 1990s.

Time Warner, Inc., formerly traded as TWX on the NYSE, was a major media conglomerate formed in 1989 via the merger of Time Inc. and Warner Communications. Its holdings included television networks, film studios, and cable properties such as HBO, Turner Broadcasting System, and Warner Bros. It remained a prominent stock symbol until 2018, when AT&T completed an acquisition of Time Warner. Upon closing, Time Warner’s shares were converted to AT&T stock and the TWX ticker was retired. The combined entity was initially named WarnerMedia, with later corporate restructurings leading to current holdings under Warner Bros. Discovery.