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Loss Causation Securities Regulation Securities Litigation

Morrison & Foerster LLP

Securities Fraud Claims Based on Short Reports

Is a report by a short seller followed by a stock decline enough to plead securities fraud? This month, the Fourth Circuit considered this issue. In Defeo v. IonQ, Inc., a group of investors sued IonQ, a developer of quantum...more

A&O Shearman

Fourth Circuit Affirms District Court’s Denial Of Motion To Amend A Securities Fraud Class Action Against Quantum Computing...

A&O Shearman on

On April 8, 2025, the United States Court of Appeals for the Fourth Circuit affirmed the district court’s denial of a motion to amend a class action complaint against a quantum computing company (the “Company”) and the...more

A&O Shearman

The Second Circuit Revives Exchange Act Claims Against Outside Auditor, Finding Alleged Misstatements In Audit Certification To Be...

A&O Shearman on

On October 31, 2024, the United States Court of Appeals for the Second Circuit revived claims brought under Section 10(b) of the Securities Exchange Act of 1934 (“Exchange Act”) and Rule 10b-5 against an outside auditor (the...more

Jones Day

2021 Securities Litigation Year in Review

Jones Day on

During 2021, securities case filings fell for the second consecutive year and, for the first time since 2016, fewer than 300 federal securities class actions were filed. Despite the ongoing pandemic, the number of announced...more

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