Judicial Interpretation Of Insider Trading
1. Definition of Insider Trading
Insider trading occurs when a person trades a company’s securities based on material non-public information (MNPI). Courts have interpreted it in various contexts, often to determine whether trading by insiders or connected persons was illegal.
2. Key Cases on Judicial Interpretation
Case 1: SEC v. Texas Gulf Sulphur Co. (1971)
Facts: Employees of Texas Gulf Sulphur Co. learned about significant mineral discoveries. They bought company stock before this information was made public.
Issue: Whether employees who trade on undisclosed information are liable for insider trading.
Judgment: The court held that trading on material non-public information is illegal. “Material” means information a reasonable investor would consider important for investment decisions.
Significance: This case established the principle that any person with access to material non-public information, not just corporate executives, can be liable.
Case 2: Chiarella v. United States (1980)
Facts: Vincent Chiarella, a printer, deduced confidential takeover information about companies and bought stock before the information became public.
Issue: Whether a person can be held liable for insider trading without a fiduciary duty to the company or shareholders.
Judgment: The Supreme Court ruled Chiarella was not guilty because he owed no fiduciary duty to the shareholders of the companies whose stock he bought.
Significance: This case clarified that misappropriation or breach of duty is key in insider trading liability. Merely using non-public information without a duty is not sufficient.
Case 3: Dirks v. SEC (1983)
Facts: A whistleblower, Dirks, received inside information about fraud in a company and shared it with clients, who then sold stock.
Issue: Can tippees (people receiving insider information) be liable if the insider doesn’t directly benefit?
Judgment: The Supreme Court held that tippee liability requires the insider to breach a fiduciary duty and receive a personal benefit, even indirectly.
Significance: This case introduced the “personal benefit test” and clarified the liability of secondary recipients of insider information.
Case 4: United States v. O’Hagan (1997)
Facts: James O’Hagan, a lawyer at a firm, misappropriated confidential takeover information to trade stock.
Issue: Can someone who misappropriates information for personal gain, without directly being part of the company, be liable?
Judgment: The Supreme Court established the misappropriation theory: a person can be liable if they misappropriate confidential information in violation of a duty owed to the source of information.
Significance: This broadened insider trading liability beyond corporate insiders to those who steal information from companies or clients.
Case 5: Salman v. United States (2016)
Facts: Bassam Salman received confidential stock tips from his brother-in-law, who was a corporate insider, and traded stock based on that information.
Issue: Whether family gifts of insider information can constitute insider trading.
Judgment: The Supreme Court ruled that giving confidential information to a relative with the expectation of benefit counts as insider trading.
Significance: Reinforced the concept that tippee liability includes family and friends, not just business associates.
Case 6: In Re Rajat Gupta (2012-2014) – India Case
Facts: Rajat Gupta, former director of Goldman Sachs, allegedly leaked confidential boardroom information about the company to Raj Rajaratnam, a hedge fund manager.
Issue: Whether disclosure of confidential boardroom information to outsiders constitutes insider trading.
Judgment: Gupta was found guilty of breaching fiduciary duty by providing material non-public information to a tippee who traded on it.
Significance: Reinforced that in India, like in the U.S., insider trading includes disclosing information to outsiders and not just trading oneself.
3. Key Judicial Principles Emerging
From these cases, courts have clarified:
Materiality – Information must be significant enough to affect investor decisions.
Non-public nature – Publicly available information does not count.
Fiduciary duty – Liability typically arises from a duty owed to the company or shareholders.
Tippee liability – People receiving confidential info can be liable if the tipper gains a personal benefit.
Misappropriation theory – Even outsiders can be liable if they steal information from a company or client.

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