Trader Jarret Johnson of Virtu Financial works on the floor of the New York Stock Exchange. Photograph: Reuters/Chip East

Virtu Financial, the global electronic trading firm that lost money on only one day in the past five years, is preparing to sell shares through(...)

The bogus Tweet from Associated Press’s main account told its millions of followers President Barack Obama had been injured in an explosio.

US equity markets suffered a brief but violent sell-off after a news agency’s hacked Twitter account post(...)