Securities Regulation
1976
TSC Industries, Inc. v. Northway, Inc.
426 U.S. 438 (1976)
Supreme Court of the United States
Issue
Materiality standard for omissions in proxy statements.
Facts
TSC Industries issued proxy materials for a shareholder vote involving National Industries. Northway, a TSC shareholder, alleged that the proxy statement omitted facts about National's control position and other information relevant to the transaction.
Holding
The Court adopted a substantial-likelihood standard for materiality under the proxy rules.
Reasoning
Justice Marshall rejected both overly loose and overly demanding formulations of materiality. A fact is material if there is a substantial likelihood that a reasonable shareholder would consider it important in deciding how to vote, and if disclosure would significantly alter the total mix of information available.
Why It Matters
TSC supplies the canonical materiality standard used across securities disclosure and fraud doctrine, linking legal liability to information value and investor decision-making.
Research Questions
- How does the rule affect information production, investor reliance, and enforcement costs?
- What are the likely error costs for lawful market activity and for undetected misconduct?
Case Text and Citation
Cite the reported decision as 426 U.S. 438 (1976). The linked copy is provided for reading access and may be hosted by a court, institutional repository, or secondary case archive.
Open case text: Justia U.S. Supreme Court Center