Amazon shares dropped 2.5% following a major antitrust and consumer protection lawsuit filed by the U.S. Federal Trade Commission (FTC) alongside 22 states, alleging the tech giant manipulated its digital advertising auctions.
Core Allegations and Financial Impact
-
The “Soft Reserve” Mechanism: Regulators claim Amazon secretly altered its ad auction system by inserting a “soft reserve” price instead of relying purely on competitive bidding, artificially inflating the final cost for merchants.
-
Massive Overcharges: The FTC estimates the practice resulted in more than $20 billion in overcharges levied against roughly 1.2 million advertising customers over several years, warning those costs may ultimately trickle down to consumers.
-
Targeting a Growth Engine: The lawsuit strikes at Amazon’s lucrative digital ad division, which raked in $86.6 billion in sales in 2025 to cement its position as the world’s third-largest ad platform behind Google and Meta.
Amazon’s Defense and Broader Fallout
Amazon has fiercely rejected the lawsuit as misguided and flawed, defending the value its advertising platform provides to third-party sellers. However, the legal challenge adds to a growing mountain of regulatory headwinds, compounding an existing FTC-backed antitrust suit targeting its core e-commerce marketplace.
Investors are now closely monitoring potential financial penalties, mandatory structural changes to Amazon’s ad auctions, and the broader fallout for the company’s high-margin advertising growth.
