TLDR
- Kalshi faces a proposed class action lawsuit filed in a Manhattan federal court.
- Plaintiffs claim the company shared trading activity and personal data with third-party advertisers.
- The lawsuit says trackers from Google, TikTok, and LinkedIn were embedded on Kalshi’s website and app.
- Three named plaintiffs want to represent a nationwide class of Kalshi users.
- The case follows a separate ruling against Kalshi in a New York gambling dispute.
Kalshi is facing a new legal fight. A proposed class action lawsuit was filed against the company in federal court in Manhattan.
The lawsuit arrived just days after a judge refused to shield Kalshi from New York gambling regulators. That earlier case focused on the company’s sports-event contracts.
This new lawsuit is about something different. It claims Kalshi secretly shared user data with outside advertisers.
Allegations of Secret Data Sharing
Plaintiffs say Kalshi placed hidden trackers on its site and app. These trackers reportedly came from companies like Google, TikTok, and LinkedIn.
The complaint claims this let outside companies see what event contracts users viewed. It also allegedly tracked what people researched or traded.
The lawsuit was brought by the law firms Sterlington and Lite DePalma Greenberg & Afanador. They accuse both Kalshi Inc. and Kalshi of sending user activity to third parties without permission.
Plaintiffs point to Kalshi’s own rulebook. They say it requires clear consent before personal information is used for marketing.
The complaint argues Kalshi ignored that rule. It claims the company collected far more than basic contact details.
According to the lawsuit, Kalshi linked real identities to financial information. It also allegedly recorded what users searched, viewed, followed, bought, and sold.
Because Kalshi’s contracts are tied to real-world events, plaintiffs say this data reveals more than trading habits. They claim it can expose a person’s political views and financial outlook.
The complaint also says this data can reveal someone’s social interests. It says it can show a person’s tolerance for risk.
Nationwide Class Sought
Three people are named as plaintiffs in the case. They are Adrian Vazquez and Alexander Foley of Florida, along with Nicholas Ross of Pennsylvania.
The plaintiffs want to represent a nationwide class of Kalshi users. They are also asking for state-specific subclasses within that group.
The lawsuit raises claims under the Florida Security of Communications Act. It also cites the Pennsylvania Wiretapping and Electronic Surveillance Control Act.
Beyond those state laws, the complaint includes claims of unjust enrichment. It also raises a claim called constructive bailment.
Plaintiffs are seeking several forms of relief. This includes statutory, actual, and punitive damages, along with restitution.
They are also asking for injunctive and declaratory relief. Attorneys’ fees are part of the request as well.
This privacy lawsuit is separate from Kalshi’s ongoing gambling dispute. But it adds another legal challenge for the company to face.
Just days before this lawsuit was filed, U.S. District Judge Analisa Torres issued a ruling against Kalshi. She found the company was unlikely to prove that federal commodities law blocks New York from applying its gambling rules to sports-event contracts.
That ruling left Kalshi open to state regulation in New York. The new privacy lawsuit now adds a second front to the company’s legal battles.
