Apple, Amazon, Google and Facebook shares tumble on antitrust concerns

Shares of leading tech giants slid Monday on reports that antitrust regulators are taking steps that could lead to greater oversight.

Shares of Amazon were down more than 4 percent Monday following a Washington Post report that the top U.S. antitrust enforcement agencies have a new agreement over tech oversight. The drop shaved about $35 billion from its market cap, bringing it to $839 billion.

Shares of Facebook were down Monday morning, but slid even further after The Wall Street Journal reported that the FTC will be able to examine the effect of Facebook’s practices on digital competition.

The stock was down more than 6 percent following the report, shaving more than $33 billion from its market cap and bringing it to about $472 billion.

Facebook is already under investigation by the FTC over its handling of user data and has said it is expecting a fine of up to $5 billion.