Regulators from the U.S. and overseas have ratcheted up the pressure on U.S. technology giants, launching new investigations in recent months of Amazon, Apple, Facebook and Google over anti-competitive behavior, and continuing probes of their data collection and privacy practices.

Those four companies together are now the subject of 27 investigations by U.S. and foreign authorities, up from 16 in February. That’s according to new research by The Information for our updated Investigations Tracker. New investigations include the Italian competition authority’s inquiry into Amazon for abuse of its dominant market position and the U.S. House of Representatives’ probes of all four companies for anti-competitive behavior. That number doesn’t include antitrust investigations of those companies that are expected to be launched soon by the Federal Trade Commission and the Department of Justice.