The New York State Attorney General's office has opened an antitrust investigation into real estate brokerage giant Compass regarding its $1.6 billion acquisition of a competing firm.

The probe focuses on potential competitive concerns stemming from the major acquisition in the real estate brokerage market. Compass, one of the largest residential real estate brokerages in the United States, has grown rapidly through a series of acquisitions in recent years.

Antitrust investigations typically examine whether mergers or acquisitions could reduce competition, harm consumers, or create monopolistic market conditions. The attorney general's office has not disclosed specific details about the scope or timeline of the investigation.

Compass has built its business model around technology-enhanced real estate services and has expanded aggressively across major metropolitan markets. The company went public in 2021 and has been a significant player in consolidating the fragmented residential real estate brokerage industry.

The investigation comes as regulators have increased scrutiny of large acquisitions across various industries, particularly those that could impact market competition and consumer choice.