535 U.S. 813 (2002)
The Supreme Court case of SEC v. Zandford is significant as it addresses the relationship between securities fraud and breach of fiduciary duty, refining the scope of liability under section 10(b) of the Securities Exchange Act of 1934 and Rule 10b-5.
Can a broker be liable for securities fraud under section 10(b) and Rule 10b-5 when engaging in a fiduciary breach that involves deceptive practices in connection with securities transactions, despite the lack of explicit misrepresentation?
Section 10(b) of the Securities Exchange Act of 1934 and Rule 10b-5 prohibit any act or omission resulting in fraud or deceit in connection with the purchase or sale of any security.
The Supreme Court held that Zandford's misconduct was indeed 'in connection with the purchase or sale of any security' as required under Rule 10b-5, thus constituting securities fraud.
SEC v. Zandford reaffirms that securities laws are broadly construed to protect against fraudulent schemes that, while involving breaches of fiduciary duties, may not involve traditional misrepresentations. It highlights the principle that fraud which interferes with a client's ownership rights and occurs through the execution of securities transactions falls under federal antifraud regulations.