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Securities and Exchange Commission (SEC)
Since 1934· Institution or agency
Fact, law or dataA rule, statute, definition or measured number.
The independent federal agency that regulates securities markets, brokers, fund managers and public companies, and sues over securities fraud.
See it on the Money & Finance map →How it works
Congress created the SEC in the Exchange Act of 1934, and Franklin Roosevelt named Joseph Kennedy, a former market speculator, its first chairman. It has five commissioners, no more than three from one party. It writes and enforces rules for public-company disclosure, exchanges, broker-dealers, investment advisers and mutual funds, and posts every filing in its free EDGAR database. Its powers are civil: fines, industry bans and returning money to victims. Criminal cases go to the Justice Department. It brings several hundred enforcement actions a year.
Why it matters
It is the main referee of US capital markets; its disclosure rules and enforcement are a big reason investors worldwide trust US-listed stocks.
Facts, rules and data
SEC annual reports and enforcement statistics; filings on EDGAR at sec.gov; investor tools at Investor.gov. Its failures are documented too, notably its inspector general's 2009 report on missing Madoff.
Debates and risks
How hard to regulate crypto, climate disclosure and market structure swings with each administration; in 2024 the Supreme Court also required jury trials for its fraud penalties.
Inside this (2)
Connections (11)
▸Stock exchanges: NYSE and Nasdaq are regulated by Securities and Exchange Commission (SEC)Fact, law or data
The connection
Under the 1934 Act an exchange must register with the SEC, which approves its rules, fees and listing standards. Exchanges are themselves self-regulators that police members and listed companies. SEC rules such as Regulation NMS (2005) bar trading venues from executing orders at prices worse than the best quote displayed on a competing venue.
When and why
Since 1934; today about two dozen registered exchanges, mostly owned by three groups: Intercontinental Exchange (which owns the NYSE), Nasdaq and Cboe.
How we know
Exchange registrations and rule filings on sec.gov; SEC enforcement against exchanges, such as Nasdaq's $10 million penalty over the botched 2012 Facebook IPO.
Debates and risks
With roughly half of US stock trading now off exchanges, in dark pools and at wholesalers, whether market rules still serve small investors well is debated.
▸The 1929 crash and the Great Depression led to the creation of Securities and Exchange Commission (SEC)Fact, law or data
The connection
The 1929 crash and the Senate's Pecora hearings exposed stock pools, insider deals and banks selling bad bonds to their own customers. Congress answered with the 1933 Securities Act, first run by the Federal Trade Commission, and then the 1934 Exchange Act, which created a dedicated Securities and Exchange Commission to police markets.
When and why
Washington, 1932–34; Senate Banking Committee counsel Ferdinand Pecora led the hearings, and Franklin Roosevelt signed the Exchange Act on June 6, 1934.
How we know
The Pecora hearing transcripts and the committee's 1934 report; the statutes themselves. The Dow had fallen about 89% from its 1929 peak by 1932.
Debates and risks
Historians debate how much fraud and speculation caused the crash versus Fed policy and bank failures; the SEC targeted market abuses more than the Depression's causes.
▸Securities and Exchange Commission (SEC) enforces Securities Act of 1933 and Exchange Act of 1934Fact, law or data
The connection
The SEC writes the detailed rules that put both Acts into practice, such as Regulation D for private placements and Rule 10b-5 against fraud, reviews filings, and sues violators in federal court or its own proceedings. Remedies include fines, returning ill-gotten profits to victims and barring people from serving as officers or working in the industry.
When and why
Since 1934, when the SEC took over the 1933 Act from the Federal Trade Commission; it now sues in federal court for most fraud penalties.
How we know
The Acts' grants of rulemaking power; SEC rules in Title 17 of the Code of Federal Regulations; SEC v. Jarkesy (2024), requiring jury trials for fraud penalties.
Debates and risks
How far the SEC can stretch 1930s laws to new products like crypto and private markets without new legislation from Congress is contested.
▸Securities and Exchange Commission (SEC) oversees FINRA: the brokers' self-regulatorFact, law or data
The connection
FINRA writes rules for brokers, but each needs SEC approval. The SEC inspects FINRA, hears appeals of its disciplinary decisions and can override it. The arrangement lets the industry fund and staff its own front-line supervision while government keeps final control.
When and why
The model began with the 1938 Maloney Act, which led to the NASD in 1939; FINRA has operated under SEC oversight since its 2007 creation.
How we know
Sections 15A and 19 of the Exchange Act; SEC orders approving FINRA rule changes; SEC decisions on appeals of FINRA discipline.
Debates and risks
Critics say a private body wielding government-like power is unconstitutional; a 2024 appeals ruling barred FINRA from expelling a firm before SEC review.
▸Securities and Exchange Commission (SEC) refers criminal cases to Fraud enforcers: DOJ, FBI and the FTCFact, law or data
The connection
The SEC can bring only civil cases, so when evidence points to willful fraud it refers the matter to the Justice Department, usually a US attorney's office, and the FBI. The agencies often file the same day: the SEC seeks fines and asset freezes, while prosecutors bring criminal charges that carry prison.
When and why
Routine since the 1930s; Madoff was arrested by the FBI and sued by the SEC on December 11, 2008, and FTX's founder was charged by DOJ, SEC and CFTC on December 13, 2022.
How we know
Parallel complaints and indictments filed together in public court records; SEC rules allow sharing its investigative files with prosecutors on request.
Debates and risks
Defense lawyers argue civil investigations can unfairly gather evidence for criminal cases; how often smaller frauds should be referred is debated.
▸Bernie Madoff's Ponzi scheme (exposed 2008) was missed despite warnings to Securities and Exchange Commission (SEC)Fact, law or data
The connection
Analyst Harry Markopolos warned the SEC from 2000 that Madoff's returns were mathematically impossible, and others raised alarms too. SEC staff examined the firm several times but never confirmed his trades with an independent clearinghouse, a check that would have exposed the fraud quickly.
When and why
SEC offices in Boston and New York, 2000–2008; Markopolos's 2005 memo was titled 'The World's Largest Hedge Fund Is a Fraud'.
How we know
The SEC inspector general's 2009 report counted six substantive complaints and documented missed steps; Markopolos testified to Congress in February 2009.
Debates and risks
Whether the failure was inexperience, deference to a famous figure, or both, is debated; the inspector general found no evidence of bribery.
▸Ivan Boesky and the 1980s insider-trading cases paid a then-record $100 million to Securities and Exchange Commission (SEC)Fact, law or data
The connection
Facing charges, Boesky settled with the SEC: $50 million returned as illegal profit plus a $50 million penalty, the largest ever at the time. He accepted a lifetime industry ban and secretly helped investigators, recording conversations with targets.
When and why
Announced November 14, 1986, by SEC Chairman John Shad in Washington.
How we know
The SEC's 1986 announcement and litigation release, and later cases that used his recorded evidence.
Debates and risks
Critics said the deal let him unload holdings before markets heard, cushioning his losses; the SEC said it was needed to keep markets orderly.
▸Securities fraud: lying to investors and rigging markets is policed by Securities and Exchange Commission (SEC)Fact, law or data
The connection
The SEC's Division of Enforcement investigates tips, referrals and data leads, subpoenas records and testimony, and sues in federal court for fines, asset freezes, return of profits and industry bans. Whistleblowers can receive 10–30% of penalties over $1 million, a program that has paid over $2 billion since 2011.
When and why
Nationwide since 1934; the SEC receives tens of thousands of tips a year through its online portal at sec.gov/tcr.
How we know
SEC annual enforcement results (fiscal 2024: 583 actions and about $8.2 billion in ordered remedies); whistleblower program reports to Congress.
Debates and risks
In 2025 the SEC shifted toward outright fraud on investors and away from crypto registration cases; whether that weakens or sharpens deterrence is debated.
▸Sarbanes–Oxley Act (2002) set audit rules overseen by Securities and Exchange Commission (SEC)Fact, law or data
The connection
The act put the new PCAOB under the SEC, which appoints its board and approves its rules and budget; the board inspects audit firms and sets auditing standards. The SEC also wrote the certification and internal-control rules companies follow.
When and why
The PCAOB began work in 2003; SEC rules for Section 404 were adopted in 2003 and phased in from 2004.
How we know
SEC releases approving PCAOB standards, and the Supreme Court's 2010 Free Enterprise Fund decision, which kept the board but let the SEC remove its members at will.
Debates and risks
Proposals to fold the PCAOB into the SEC resurfaced in Congress in 2025; whether that would weaken audit oversight is debated.
▸CLARITY Act: crypto market-structure bill (not yet law) would narrow crypto oversight by Securities and Exchange Commission (SEC)Fact, law or data
The connection
Under Chair Gary Gensler, the SEC argued most tokens were securities and sued major exchanges. The bill would limit the SEC to fundraising by token projects, with disclosure rules, while tokens on mature, decentralized networks become 'digital commodities' outside its reach.
When and why
House passage July 17, 2025; by then the SEC, under acting chair Mark Uyeda and then Chair Paul Atkins, had dropped most crypto exchange cases.
How we know
The bill text and SEC enforcement records, including its February 2025 dismissal of the Coinbase case.
Debates and risks
Where the line between a security token and a commodity token falls, which courts and agencies may keep fighting over.
▸Market makers, high-speed traders and payment for order flow drew scrutiny over order-flow payments from Securities and Exchange Commission (SEC)Fact, law or data
The connection
The SEC requires brokers to disclose order routing and payments (Rule 606) and market centers to report execution quality (Rule 605, expanded in 2024). In December 2022 it proposed forcing many retail orders into open auctions, then withdrew that plan in June 2025. The UK bans PFOF, and an EU ban phased in by 2026.
When and why
Washington; the 2021 GameStop hearings prompted Chair Gary Gensler's review, and the SEC under his successor Paul Atkins withdrew it.
How we know
SEC releases, Federal Register notices and the SEC's June 12, 2025 withdrawal of 14 pending proposals.
Debates and risks
Whether a future SEC revisits PFOF, and whether bans abroad left retail traders better or worse off.