A US judge has dismissed a lawsuit accusing Amazon of misleading shareholders about its treatment of third-party sellers and its expansion plans, which ultimately led to an antitrust case by the Federal Trade Commission (FTC).

The ruling by Judge John Chun in Seattle was made with prejudice, meaning the lawsuit cannot be refiled. Lawyers representing the shareholders did not immediately comment on the decision.

Investors had alleged that Amazon hid an algorithm that ensured its own products were priced lower than competitors' and failed to disclose the risks of overexpanding its fulfilment network.

However, Judge Chun found no compelling evidence that Amazon executives, including former CEO Jeff Bezos and current CEO Andy Jassy, intentionally misled investors.

The court ruled that Amazon's actions were more likely driven by profit-focused business strategies rather than fraud.

The FTC filed an antitrust case against Amazon in September 2023, accusing the company of using its market power to suppress competition and inflate prices.

Eighteen US states and Puerto Rico have joined the lawsuit, with a nonjury trial set for October 2026. The shareholder lawsuit covered Amazon stockholders from February 2019 to April 2022.