Rosen Law Firm says it is probing Avis securities claims tied to Pentwater
Rosen Law Firm says it is investigating claims tied to Avis Budget Group shares and a class action that names Pentwater Capital Management and Matthew Halbower.
Rosen Law Firm says a class action alleges Pentwater Capital Management and Matthew Halbower manipulated the market for Avis Budget Group securities during a class period from Feb. 20, 2025, to Apr. 21, 2026.
Rosen Law Firm said in a Sept. 4, 2026, notice that investors who bought Avis Budget Group securities, including those who bought common stock to cover a short position, may be eligible to seek compensation in a securities class action already filed.
The firm said the case concerns Avis Budget Group, which trades on Nasdaq under the ticker CAR, and names Pentwater Capital Management LP and Matthew Halbower as defendants. The notice says Halbower is Pentwater’s CEO, chief investment officer and founder.
Rosen said the class period in the case runs from Feb. 20, 2025, through Apr. 21, 2026, inclusive, and that a lead plaintiff must move the court by Sept. 29, 2026.
According to the notice, Pentwater held an estimated 51% total economic interest in Avis through stock and cash-settled swaps as of March 2026. The filing says Pentwater’s aggressive buying allegedly triggered unusual volatility and a short squeeze that lifted the value of Pentwater’s holdings.
The press release does not include a response from Pentwater or Halbower. It says eligible investors may be able to pursue the case on a contingency fee basis, which means they would not pay out-of-pocket fees or costs under that arrangement, according to the notice.
Rosen Law Firm’s notice includes a case-join link and contact details for Phillip Kim, Esq., and says eligible investors may move to serve as lead plaintiff before the Sept. 29 deadline.
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Editorial note: This article was prepared with AI assistance and includes source attribution for reader review.
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