Portnoy Law Firm Files Class Action Lawsuit Against Trip.com

Lawsuit alleges Trip.com understated regulatory risks from antitrust issues

Apr. 13, 2026 at 2:46pm

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A high-end, photorealistic studio still-life photograph featuring a stack of legal documents, a gavel, and a calculator on a clean, monochromatic background, symbolizing the legal proceedings and financial implications of the antitrust lawsuit against Trip.com.A minimalist still life captures the legal and financial complexities of the antitrust case against China's dominant online travel platform.Los Angeles Today

The Portnoy Law Firm has filed a class action lawsuit on behalf of Trip.com Group Limited investors who bought securities between April 30, 2024 and January 13, 2026. The lawsuit alleges that Trip.com made false and/or misleading statements and failed to disclose the regulatory risks it faced due to its monopolistic business activities. The lawsuit was filed after a Bloomberg article reported that China is investigating Trip.com for alleged antitrust conduct, causing the company's stock price to drop by around 19% over two trading sessions.

Why it matters

This lawsuit highlights the growing regulatory scrutiny that major tech companies like Trip.com are facing over antitrust concerns, particularly in China where the government has taken a more aggressive stance against monopolistic practices. The outcome of this case could have significant implications for Trip.com's future operations and financial performance.

The details

The Portnoy Law Firm alleges that Trip.com, through its subsidiaries, operates as a dominant travel service provider in China and recklessly understated the regulatory risks it faced as a result of its monopolistic business activities. The lawsuit claims that in September 2025, the market regulator in Zhengzhou summoned Trip.com for violations of rules against setting 'unfair restrictions' on merchants' transactions and prices. On January 14, 2026, Bloomberg reported that China is investigating Trip.com for alleged antitrust conduct, which caused the company's stock price to drop by around 19% over two trading sessions.

  • The class period covers securities bought between April 30, 2024 and January 13, 2026.
  • In September 2025, the market regulator in Zhengzhou summoned Trip.com for violations of rules.
  • On January 14, 2026, Bloomberg reported on the antitrust investigation into Trip.com.

The players

Portnoy Law Firm

A law firm representing investors in pursuing claims caused by corporate wrongdoing. The firm's founding partner has recovered over $5.5 billion for aggrieved investors.

Trip.com Group Limited

A travel service provider for accommodation reservation, transportation ticketing, packaged tours, in-destination, corporate travel management, and other travel-related services. The company is being investigated for alleged antitrust conduct in China.

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What they’re saying

“Investors are encouraged to contact attorney Lesley F. Portnoy, by phone 310-692-8883 or email: lesley@portnoylaw.com, to discuss their legal rights, or join the case via http://portnoylaw.com/trip-com-group-limited.”

— Lesley F. Portnoy, Attorney

What’s next

Trip.com investors have until May 11, 2026 to file a lead plaintiff motion in the class action lawsuit.

The takeaway

This case highlights the growing regulatory scrutiny that major tech companies like Trip.com are facing over antitrust concerns, particularly in China where the government has taken a more aggressive stance against monopolistic practices. The outcome of this lawsuit could have significant implications for Trip.com's future operations and financial performance.