Third Circuit Overrules Oran-Burlington Rule in Financial Fraud Lawsuits

In a ruling issued on September 30, 2026, the federal Court of Appeals for the Third Circuit abrogated the decades-old "Oran-Burlington" rule and adopted the fact-specific "total mix of information" standard established by the Supreme Court as the sole standard for determining materiality in securities fraud lawsuits under Section 10(b) and Rule 10b-5.

The abrogated rule considered false disclosures immaterial as a matter of law if the stock price did not drop after the information was corrected or if it recovered quickly, an approach built on a strict application of the efficient market hypothesis. The court relied on the "Matrixx Initiatives" ruling, which struck down materiality tests based solely on price movement.

The case involves "Ocugen," a company specializing in retinal gene therapy, where a collaboration announced in 2019 was allegedly not accounted for as a collaborative agreement under accounting standards, producing misstated financial statements and prompting the company to restate fifteen financial quarters and describe its prior results as "materially misstated." The stock fell 10.38% the following day but recovered all of its decline within two days, leading the court of first instance to dismiss the lawsuit for that reason.

This impacts U.S.-listed companies, their legal counsel, and their investors, as the ruling expands the scope of what can be considered an actionable misstatement even if the price moves slightly or not at all. The Circuit vacated the judgment and remanded the case to apply the total mix of information standard, but cautioned that it is not replacing one bright-line rule with another, and that referencing a restatement alone without demonstrating its significance to the financial statements may not suffice to prove materiality.

What do these terms mean?

Materiality: A standard determining whether a misstatement is important enough for an investor to make a different decision, which is an essential requirement in securities fraud lawsuits.

Total Mix of Information Standard: A fact-specific test measuring the impact of information within the total mix of information available to an investor, rather than bright-line rules based solely on price movement.

Oran-Burlington Rule: A rule that considered false disclosures immaterial as a matter of law if the stock price did not drop or quickly recovered after correction.

Financial Restatement: Reissuing financial statements to correct errors, which indicates the existence of an error but does not automatically mean materiality is proven.