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Securities Fraud Securities Exchange Act of 1934 Class Action

Pierce Atwood LLP

Why Confidential Witness Allegations Fail the Tellabs Test in the District of Massachusetts

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While securities class action filings are on the rise within the First Circuit, the District of Massachusetts continues to apply a high degree of scrutiny to securities fraud allegations, including particularized facts...more

Woodruff Sawyer

Lesser-Known Securities Law Theories and D&O Risk

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Most federal private securities litigation is brought under Section 10(b) of the Exchange Act and Section 11 of the Securities Act. These two provisions are responsible for most of the big-ticket securities class actions that...more

A&O Shearman

Sixth Circuit Vacates Class Certification In Securities Fraud Lawsuit Against Electric Services Company

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On August 13, 2025, the United States Court of Appeals for the Sixth Circuit vacated a district court order granting class certification in a putative securities class action against an electric services company (the...more

A&O Shearman

Third Circuit Reinstates Class Action Against Reinsurance Company, With Instructions To Allow Additional Discovery

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On August 20, 2025, the United States Court of Appeals for the Third Circuit reinstated a class action asserting claims under the Securities Exchange Act of 1934 against a reinsurance company and certain of its executives. In...more

Patterson Belknap Webb & Tyler LLP

AI- and Cryptocurrency-Related Securities Class Action Filings in 2025 H1

Cornerstone Research recently published its 2025 midyear assessment of securities class action filings. Compared to the second half of 2024, securities class action filings in the first half of 2025 decreased slightly from...more

A&O Shearman

District Of New Jersey Dismisses Putative Securities Class Action Against Pharmaceutical Company

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On July 30, 2025, Judge Brian R. Martinotti of the United States District Court of the District of New Jersey granted a motion to dismiss a putative securities fraud class action against a drug manufacturing company (the...more

A&O Shearman

Eastern District Of Pennsylvania Dismisses Putative Class Action Against Biotechnology Company For Failure To Adequately Allege...

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On July 29, 2025, the United States District Court for the Eastern District of Pennsylvania dismissed a putative class action asserting claims under the Securities Exchange Act of 1934 against a biotechnology company and its...more

Pierce Atwood LLP

District of Massachusetts Sees Rise in Securities Fraud Class Actions Despite Dismissal Risks

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This is part one of a three-part series exploring the recent uptick in securities class action filings in the First Circuit and examining recent decisions issued by the District of Massachusetts. This post examines current...more

A&O Shearman

Northern District Of California Declines To Dismiss Putative Class Action Against Clothing Company

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On July 9, 2025, Judge P. Casey Pitts of the United States District Court for the Northern District of California largely declined to dismiss a putative securities class action asserting claims under the Securities Exchange...more

A&O Shearman

Northern District Of California Dismisses Class Action Against Power Solutions And Modules Company

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On June 6, 2025, Judge Richard Seeborg of the United States District Court for the Northern District of California granted without prejudice a motion to dismiss a putative securities fraud class action against a developer of...more

A&O Shearman

Northern District Of California Narrows Claims In Securities Class Action Against Medical Devices Company

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On June 3, 2025, Judge Jacqueline S. Corley of the Northern District of California granted in part a motion to dismiss a putative securities class action brought against a medical devices company (the “Company”), its CEO, and...more

A&O Shearman

Northern District Of California Dismisses Class Action Against Social Media Company

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On May 19, 2025, Judge Edward J. Davila of the United States District Court for the Northern District of California dismissed without prejudice a proposed securities fraud class action asserting claims against a social...more

Cooley LLP

Deciding Issue of First Impression, Fourth Circuit Holds Short-Seller Report Could Not Support Loss Causation – in Significant...

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On April 8, 2025, the US Court of Appeals for the Fourth Circuit affirmed the US District Court for the District of Maryland’s dismissal of all claims in Defeo et al. v. IonQ, Inc. et al., a securities class action asserting...more

A&O Shearman

Northern District Of California Dismisses Putative Class Action Against Solar Panel Manufacturer For Failure To Allege Falsity

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On April 28, 2025, Judge Edward M. Chen of the United States District Court for the Northern District of California dismissed a putative securities fraud class action asserting claims against a solar panel manufacturer (the...more

A&O Shearman

Northern District Of California Dismisses Securities Class Action Against Biopharmaceutical Company For Failure To Adequately...

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On May 5, 2025, Judge Yvonne Gonzalez Rogers of the United States District Court for the Northern District of California granted a motion to dismiss a proposed class action asserting claims against a biopharmaceutical company...more

Hogan Lovells

Tenth Circuit affirms dismissal of short seller’s claims against Overstock

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On October 15, 2024, the United States Court of Appeals for the Tenth Circuit issued an opinion in In re Overstock Securities Litigation affirming the District of Utah’s dismissal of putative class action claims under the...more

A&O Shearman

Colorado District Court Dismisses Putative Class Action Against Software Company For Failing To Adequately Allege Scienter Or...

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On April 4, 2025, Judge Gordon P. Gallagher of the United States District Court for the District of Colorado dismissed with prejudice a putative class action asserting claims under the Securities Act of 1933 and the...more

A&O Shearman

Eastern District Of New York Grants In Part And Denies In Part Motion To Dismiss Against Manufacturer Of Security Devices

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On April 11, 2025, Judge Brian M. Cogan of the United States District Court for the Eastern District of New York granted in part and denied in part a motion to dismiss a putative class action alleging violations of Sections...more

A&O Shearman

Southern District Of New York Denies Motion To Dismiss Putative Securities Class Action Against Cosmetics Company

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On March 31, 2025, Judge Arun Subramanian of the United States District Court for the Southern District of New York denied a motion to dismiss a putative securities class action against a cosmetics company (the “Company”),...more

Cadwalader, Wickersham & Taft LLP

Securities Litigation Alert: Second Circuit Applies Fraud-on-the-Market Presumption to Section 10(b) Claims Based on Missed...

On February 3, 2025, in In re Shanda Games Limited Securities Litigation, a divided panel of the U.S. Court of Appeals for the Second Circuit, allowed a putative investor class to proceed with securities fraud claims under...more

Goodwin

Securities Litigation Against Life Sciences Companies 2024 Year in Review

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Welcome to our ninth annual report on US securities class actions filed against publicly traded life sciences companies, which include pharmaceutical, biotechnology, medical device, and healthcare companies....more

A&O Shearman

Central District Of California Grants Motion To Dismiss Putative Securities Class Action Against Plant-Based Meat Substitute...

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On February 26, 2025, Judge Michael W. Fitzgerald of the United States District Court for the Central District of California granted a motion to dismiss a putative class action against a producer of plant-based meat...more

Cooley LLP

Trends in 2024 Securities Class Actions: AI and Biotech Cases On the Rise, Second Circuit Bounces Back

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Cornerstone Research recently issued its 2024 Year in Review report examining recent trends in securities class action filings. For the second year in a row, the number of securities class action filings saw an uptick,...more

A&O Shearman

Northern District Of California Grants Motion To Dismiss Securities Fraud Claim Against Ridesharing Company

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On January 16, 2025, Judge Trina L. Thompson of the United States District Court for the Northern District of California granted a motion to dismiss a securities action asserting claims under Sections 10(b) and 20(a) of the...more

A&O Shearman

Eastern District Of North Carolina Dismisses Securities Claims Against Auto Parts Retailers

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On January 23, 2025, Judge James C. Dever III of the United States District Court for the Eastern District of North Carolina dismissed a putative securities class action against an auto parts retailer (the “Company”) and...more

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