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Roberts v. Kalshi Data Breach/Fraud Class Action

Verified September 19, 2026Found via the federal court docketHow ClaimWatch verifies cases

Still being litigated: the claims below are allegations, not findings, and there is no settlement, claim form or payout yet.

Where this case stands

In litigation

The case has been filed and is being fought in court. There is no settlement, no claim form and no payout yet; many class actions are dismissed or never certified.

Pending in the District Court, S.D. New York (No. 1:26-cv-05246).

  1. June 22, 2026
    Case filed

What happened

A proposed class action against Kalshi, Inc. and related entities, apparently concerning fraud allegations. The docket references consolidation with another matter and indicates the defendants include trading and technology subsidiaries, suggesting the claims may relate to unauthorized access, mishandling of user data, or deceptive practices affecting ordinary users or account holders of Kalshi's trading or prediction market platform.

Do you qualify?

No settlement exists yet, so there is nothing to file and no class definition to check. If the case settles, the settlement will define exactly who qualifies — watch this case and we'll let you know.

How to file

There is no claim to file yet. If this case reaches a settlement, a claim process will open — usually with an official settlement website and a filing deadline.

Common questions

Can I file a claim in the Roberts v. Kalshi Data Breach/Fraud Class Action case?
No. The case is still being litigated — there is no settlement, no claim form, and no payout. It was filed June 22, 2026 in the District Court, S.D. New York (No. 1:26-cv-05246).What a class action lawsuit is →
Who are the attorneys in the Roberts v. Kalshi Data Breach/Fraud Class Action?
For the plaintiffs: Wesley W Barnett (Davis and Norris LLP); Christopher L. Rhoads (Rhoads & Rhoads. PSC). For Kalshi, Inc.: Tawfiq Saifee Rangwala (Milbank LLP); Sean Miles Murphy (Milbank LLP); Matthew Joseph Laroche (Milbank LLP); Katherine Kelly Fell (Milbank LLP). From the public court docket.

Who's involved

Plaintiffs

  • Donovan Roberts

Defendants

  • Susquehanna Government Products, LLLP
  • SUSQUEHANNA INTERNATIONAL GROUP LLP
  • Kalshi Trading LLC
  • Kalshi Klear LLC
  • Kalshi Klear Inc.
  • KalshiEX LLC
  • Kalshi Inc.

Counsel for plaintiffs

Counsel for defendants

Other cases these firms appear in

From the public court docket, contact details as filed; not an endorsement.

In the news

Headlines via NewsAPI.

Guides:What is a class action lawsuit?How class membership worksYour options as a class member

Summarised from public settlement documents; confirm terms on the official settlement website. ClaimWatch is not a law firm, and filing a claim is free.

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