Eric Schneiderman, New York’s attorney general. Mr Schneiderman is to investigate possible manipulation of foreign exchange trading. Photograph: Louis Lanzano/Bloomberg

The New York attorney general is investigating possible manipulation in foreign-exchange trading, according to a source, aiming more scrutiny at a mar(...)

Instant messaging on private networks is a principal way participants in financial markets swap the information that drives trading.

Eight investment banks are launching an ambitious assault on Bloomberg’s grip on daily communications in financial markets with the start of a free m(...)