Joseph Kennedy Appointed First SEC Chairman - Wall Street Insider to Police Wall Street

President Roosevelt appoints Joseph P. Kennedy, a wealthy Wall Street speculator known for stock manipulation and insider trading, as the first chairman of the newly-created Securities and Exchange Commission on July 2, 1934. The appointment shocks New Deal reformers and delights Wall Street, embodying FDR’s controversial strategy of using an industry insider to police the industry. When questioned about appointing a notorious stock manipulator to regulate securities markets, Roosevelt allegedly replied, “Set a thief to catch a thief.” Kennedy had amassed a fortune during the 1920s through stock pools, market manipulation, and trading practices that the SEC would subsequently outlaw.

Kennedy’s appointment represents an early example of the revolving door between Wall Street and regulatory agencies that would become a persistent feature of American financial regulation. Supporters argue that only someone intimately familiar with Wall Street’s manipulative practices could effectively regulate them; critics contend that placing a market manipulator in charge of market regulation invites capture. Kennedy serves roughly fifteen months as SEC chairman before resigning on September 23, 1935, during which time he establishes the agency’s organizational structure and initial enforcement priorities while maintaining cordial relations with the financial community he nominally regulates.

The Kennedy appointment establishes a precedent for staffing regulatory agencies with industry insiders, justified by claims of technical expertise but creating structural conflicts of interest. While Kennedy’s SEC does adopt significant regulations including securities registration requirements and disclosure rules, the choice signals to Wall Street that New Deal regulation will be administered by those sympathetic to industry concerns. This pattern of regulatory leadership drawn from regulated industries becomes standard practice, contributing to the cycles of regulatory capture that undermine financial oversight in subsequent decades (1970s deregulation, 2008 financial crisis, 2010s enforcement failures). Kennedy later serves as Ambassador to the United Kingdom and becomes patriarch of the Kennedy political dynasty, his Wall Street fortune funding his sons’ political careers.

Verification corrections (2026-08-28)

An outward verification pass against scholarly and reference sources produced three corrections to this entry:

1. “431 days” was wrong and has been replaced. Kennedy was appointed June 30, 1934 (the Commission was constituted July 2, 1934) and resigned September 23, 1935 — about 450 days, or roughly fifteen months. Do not cite 431.

2. “Set a thief to catch a thief” is very likely not FDR’s. The phrase is a stock English proverb catalogued in Bohn & Ray’s A Hand-book of Proverbs (1855), long predating Roosevelt, and the verification pass found it unsourced in every reachable source — absent from Kennedy’s standard biographical record and its citation apparatus, and unattested in scholarship tying it to the SEC appointment. What is documented is a milder, managerial rationale: the Brain Trust rated Kennedy “the best bet for Chairman because of executive ability, knowledge of habits and customs of business to be regulated and ability to moderate different points of view on Commission” (David Nasaw, The Patriarch, p. 208). Treat the quote as legend, not as a quotation from FDR.

3. Kennedy did not build the enforcement architecture. The Securities Act of 1933 was drafted by Benjamin Cohen, Thomas Corcoran, and James Landis, and the Securities Exchange Act of 1934 was signed June 6, 1934 — before Kennedy took office, with over-the-counter markets already within its long title. Kennedy administered a statutory regime others designed; Landis, a drafter, then served on his Commission and succeeded him as chairman. Kennedy’s most durable contributions were staffing (he recruited William O. Douglas, Abe Fortas, and David Saperstein, who wrote the first federal OTC rules).

Open, access-blocked: whether the Kennedy SEC brought enforcement actions could not be established — sec.gov returned HTTP 403 and no FY1935 annual report was reachable. That is a blocked source, not a finding of absence. The SEC Annual Report for FY1935 and the printed Stock Exchange Practices hearings (Senate Banking & Currency, 73d Cong.) would resolve it.

Kennedy’s own pre-1934 conduct is documented and was never charged: he helped run a 1933 Libbey-Owens-Ford stock pool that wash-traded volume and traded on a false implied link to Owens-Illinois (Nasaw, The Patriarch, p. 192), and John Hertz suspected him of running the 1924 Yellow Cab bear raid he had been hired to repel (Ron Chernow, The House of Morgan, p. 307). These practices were legal or unregulated at the time — the statutes he was appointed to administer were written to outlaw them.