西雅图贝尔维尤男子起诉预测平台Kalshi索赔58万美元
一名居住在华盛顿州贝尔维尤的男子先在金县高等法院起诉预测市场平台Kalshi，索赔580,544.98美元，指控该公司在华盛顿州非法经营赌博业务，违反州《消费者保护法》；Kalshi于10月23日将案件移交位于西雅图的联邦法院审理。
原告斯科特·布赖特在2026年6月17日至8月14日期间，通过253笔交易向Kalshi账户存入315,353.94美元，押注美国职棒、职业网球以及韩国和日本职棒等赛事。
起诉书称，Kalshi在此期间收取了近5,600美元存款手续费和84,062美元交易费，布赖特的实际净亏损为308,781.62美元，账户仅剩983.27美元。
布赖特依据华盛顿州《赌博失金追回法》索赔，理由是州法允许按逐个赛事分别追回损失，赢利不能抵消其他赛事的亏损。
州总检察长尼克·布朗今年3月27日已就同一问题起诉Kalshi，金县高院7月17日批准初步禁令，8月12日下达修正令，要求Kalshi停止在华州提供体育赛事合约。但起诉书指出，布赖特的全部253笔存款都发生在州政府起诉之后，禁令下达后Kalshi仍在接收他的资金，直到后来才提示该地禁用该应用。
Bellevue Man Sues Prediction Platform Kalshi in Seattle, Seeking $580,000
A man living in Bellevue, Washington, first sued prediction-market platform Kalshi in King County Superior Court, seeking $580,544.98 and alleging that the company operated illegal gambling in Washington in violation of the state Consumer Protection Act. On October 23, Kalshi removed the case to federal court in Seattle.
The plaintiff, Scott Bright, deposited $315,353.94 into his Kalshi account through 253 transactions between June 17 and August 14, 2026, betting on Major League Baseball, professional tennis and Korean and Japanese professional baseball, among other events.
The complaint says Kalshi charged nearly $5,600 in deposit fees and $84,062 in trading fees during that period. Bright's actual net loss was $308,781.62, leaving just $983.27 in his account.
Bright is suing under Washington's Recovery of Money Lost at Gambling Act, arguing that state law allows losses to be recovered event by event and that winnings cannot be offset against losses on other events.
Attorney General Nick Brown sued Kalshi over the same issue on March 27. A King County judge granted a preliminary injunction on July 17 and issued an amended order on August 12 requiring Kalshi to stop offering sports event contracts in Washington. Yet the complaint notes that all 253 of Bright's deposits came after the state filed suit, and that Kalshi kept accepting his money after the injunction before eventually displaying a notice that the app was unavailable in his location.
来源：美国华盛顿西区联邦地区法院诉讼文件
发布：GSM·美国（发布链接）
图片来源：位于西雅图的 William Kenzo Nakamura 美国法院大楼。Another Believer 摄，Wikimedia Commons，CC BY-SA 3.0。 / The William Kenzo Nakamura U.S. Courthouse in Seattle. Photo by Another Believer, Wikimedia Commons, CC BY-SA 3.0.
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