04:03 PM EDT, 04/08/2025 (MT Newswires) -- (Updates with Amazon's ( AMZN ) response in the fourth paragraph.)

Alphabet's (GOOG) Google ( GOOG ) and Microsoft ( MSFT ) are among the tech giants facing a possible probe from Sen. Elizabeth Warren, D-Massachusetts, over antitrust concerns, Bloomberg reported Tuesday.

The lawmaker reportedly sent a letter to the chief executives of Microsoft ( MSFT ), Alphabet, as well as the heads of OpenAI and Amazon ( AMZN )-backed (AMZN) Anthropic, over artificial intelligence partnerships that may accelerate consolidation in the sector "if left unchecked."

Google ( GOOG ) is also an investor in Anthropic. Warren's letter was co-signed by Sen. Ron Wyden, D-Oregon.

Microsoft ( MSFT ) and Amazon ( AMZN ) declined comment to MT Newswires.

Google ( GOOG ), Anthropic, and OpenAI did not immediately respond to requests for comment from MT Newswires.

(Market Chatter news is derived from conversations with market professionals globally. This information is believed to be from reliable sources but may include rumor and speculation. Accuracy is not guaranteed.)

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