Enforcement actions of the U.S. Securities and Exchange Commission

The enforcement actions of the U.S. Securities and Exchange Commission (SEC) are the agency's civil proceedings used to investigate suspected violations of federal securities laws. Most are handled by the SEC's Division of Enforcement, which the Government Accountability Office (GAO) has described as a core part of the agency responsible for investigating and policing of U.S capital markets.

In these cases, the SEC may bring civil enforcement actions in federal court or before an administrative law judge. Some SEC matters proceed in parallel with criminal investigations or prosecutions by the Department Of Justice. Regarding remedies, the agency may seek injunctions, civil penalties, disgorgement, suspensions, industry bars, as authorized by federal securities law.

SEC enforcement has changed as markets, market structure, and securities law have changed. The agency's cases have involved fraud in securities offerings, disclosure failures, Insider trading, market manipulation, accounting scandals, misconduct by brokers, dealers, and investment advisers, cross-border and illicit-finance matters, and, more recently, digital asset, Cryptocurrency and cybersecurity matters. Court rulings have also narrowed or clarified parts of the SEC's authority, including the rules on disgorgement and the use of administrative proceedings to impose civil penalties in fraud cases.

Early market legitimacy and audit reforms (1934–1940)

In the SEC's first years, several high-profile scandals tested confidence in the new federal system of securities regulation created after the 1929 market crash. Two of the best-known involved institutions that investors were expected to trust: the New York Stock Exchange and a large public company.

In 1938, Richard Whitney, a former president of the New York Stock Exchange (NYSE), was convicted on embezzlement-related charges. Histories of the SEC and of Wall Street describe the Whitney case as a major blow to confidence in exchange self-regulation. They also link it to late-1930s efforts by the SEC and reformers within the NYSE to reorganize the exchange's governance.

Also in 1938, the McKesson & Robbins fraud exposed large overstatements of inventory and receivables created through fictitious assets and false records. Later accounting histories treat the case as a turning point in U.S. auditing. They link it to stronger expectations that auditors observe inventory and confirm receivables independently, which helped push audit practice toward more formal standards and greater professional skepticism.

Although the two scandals involved different kinds of misconduct, later histories often discuss them together as early shocks to confidence in exchange governance, corporate reporting, and the audit process in the new federal securities system.

What counts as a security (1946–1953): Howey and private offerings

A basic legal question in the SEC's early years was where the federal securities laws stopped. In the agency’s early decades, courts faced a boundary problem as well as factual disputes: what kinds of transactions fell within the federal securities laws, and when could issuers stay outside the registration-and-disclosure system. Two Supreme Court decisions became especially important: Howey on investment contracts and Ralston Purina on the limits of the private-offering exemption..

Later legal scholarship usually treats Howey as the leading statement that the securities laws turn on economic reality rather than formal packaging. It often treats Ralston Purina as a key case on the line between public and private offerings. Together, the cases helped define when a transaction fell within the federal registration-and-disclosure system.

The Supreme Court’s decision in Howey (1946) grew out of sales of Florida citrus-grove plots paired with service arrangements under which the promoter cultivated, harvested, and marketed the fruit. Later scholarship treats the decision as important because the Court looked past the separate documents and focused on the overall arrangement. In that reading, Howey made clear that promoters could not avoid securities regulation simply by dividing an investment scheme into land, service, or commercial contracts when buyers were really relying on managerial efforts for profit. In that account, Howey mattered because it established a precedent for a definition of what constituted an investment contract —later summarized as an investment of money in a common enterprise with an expectation of profits from the efforts of others.

A related question was whether an issuer could avoid registration by calling a distribution “private.” In Ralston Purina (1953), The Court rejected a broad reading of that exemption and instead focused on whether the offerees could fend for themselves and had access to the kind of information that registration would provide. Later scholarship treats the case as a foundation of private-placement doctrine because it tied the exemption to the investors' informational position rather than to the issuer's own label for the sale.

Although the two cases addressed different issues, later legal scholarship often discusses them together as early Supreme Court decisions that favored substance over form in defining both investment contracts and claimed private offerings.

Defining insider trading liability (1968–2014)

From the late 1960s through the early 2010s, insider-trading law developed through a series of cases on when trading on confidential information becomes securities fraud. Later legal scholarship often treats SEC v. Texas Gulf Sulphur (1968), Chiarella v. United States (1980), and Dirks v. SEC (1983) as the key decisions in that shift. Together, those cases helped move the doctrine away from a broad focus on unequal access to information and toward a narrower focus on breached duties of trust and confidence.

In Texas Gulf Sulphur, company insiders bought shares and call options after a major ore discovery but before the news was public. Later commentary treats the case as a high-water mark for a broad “disclose or abstain” approach. In that reading, the decision came close to saying that anyone in possession of material nonpublic information had to either disclose it or stay out of the market.

The Supreme Court narrowed that approach in Chiarella and Dirks. In Chiarella, the Court rejected the idea that every trader with market-moving nonpublic information had a duty to disclose before trading, and instead tied liability more closely to a relationship of trust and confidence. In Dirks, the Court held that a tippee is usually liable only if the insider breached a duty for a personal benefit and the tippee knew, or should have known, of that breach. Legal scholarship commonly describes those decisions as moving insider-trading doctrine away from a general equality-of-information model and toward a duty-based theory.

The SEC’s case against Martha Stewart and her broker Peter Bacanovic showed how that duty-and-tipping framework played out in a highly publicized setting. The matter drew attention less because it changed insider-trading doctrine than because it turned a familiar tip-based investigation into a celebrity case and showed how such inquiries could spill into obstruction and false-statements charges when proving the underlying securities violation was more difficult. Stewart later settled the SEC’s civil case, while the criminal case ended in convictions for obstruction, conspiracy, and false statements rather than for a stand-alone insider-trading offense.

By the late 2000s and early 2010s, insider-trading enforcement increasingly focused on expert networks, consultant calls, and hedge-fund research pipelines. In those settings, the issue was often not a single tip but repeated flows of confidential information through professional networks. The SAC Capital matters became the best-known example. In the CR Intrinsic Investors case, an SAC affiliate settled SEC claims tied to confidential clinical-trial information used in trades in Elan and Wyeth securities. SAC later pleaded guilty in a separate criminal case, paid $1.8 billion in penalties, and stopped managing outside investor money. Later commentary treated the SAC matters as important not only for individual liability but also for what they suggested about supervision, compliance culture, and firm-level responsibility when insider trading became embedded in research and trading systems.

Later scholarship on this line of cases often describes insider-trading law as moving away from a broad fairness model and toward a narrower focus on breached duties, tipping chains, and the control of confidential information inside firms and professional networks.

Reliability of corporate information (1969–2018)

Several major SEC matters involved false financial reporting, misleading business claims, or weak internal controls over information reaching investors. In that sense, the issue was not simply that some companies performed badly. The deeper issue was whether the market could trust the numbers, representations, and public statements on which investors were expected to act.

An early example was the Equity Funding scandal of the late 1960s and early 1970s. Later accounting commentary treats it as one of the period's major frauds because the company used fabricated insurance policies and false accounting entries to inflate reported results. Those accounts also describe the case as an important episode in debates over fraud detection, audit responsibility, and the gap between what auditors said audits were designed to do and what investors thought they would catch.

The Enron collapse brought similar issues to a much larger public-company setting. Later commentary treats Enron as more than a case of poor business judgment. It is more often described as a breakdown in disclosure, audit independence, and internal monitoring that helped prompt major federal corporate-governance reforms. The aftermath reinforced a theme already visible in Equity Funding: even sophisticated markets can misprice firms for long periods when reported results are misleading and the gatekeepers around them do not force timely correction.

The Theranos matter showed that misleading claims could also reach investors in the private-company setting. Later scholarship treats Theranos as a notable example of private-company fraud because investors were asked to rely on claims about technology, commercial partnerships, and business performance that later proved deeply misleading, even though the company was not subject to the same continuing disclosure system as a public issuer. That scholarship also uses the case to show how secrecy, weak internal challenge, and limited outside scrutiny can leave investors heavily dependent on insiders, gatekeepers, and whistleblowers for reliable information.

The Tesla “funding secured” matter raised a related issue in the age of social media and founder-led companies. Here the dispute centered on whether a chief executive’s public statements about a possible going-private transaction outran both the underlying facts and the company's disclosure controls. Later legal commentary treats the case as an example of how securities enforcement can turn on the control of market-moving communications and on the ability of boards and internal processes to check senior executives before a misleading message reaches investors.

Commentary on equity funding and Enron often focused on false financial reporting and on the failure of audits, boards, and internal monitoring to stop it. Writing on Theranos and Tesla stressed a related concern in different settings: ambitious claims reached investors before effective checking by internal controls, gatekeepers, or other oversight mechanisms. Across the four episodes, a recurring question was whether investors could rely on information that had not been adequately tested before it moved prices or attracted capital.

Conflicted gatekeepers and market access (2003–2024)

Several later enforcement and regulatory episodes turned on a different problem from classic disclosure fraud. In these matters, the main issue was not whether a company had made a false statement. The first two episodes below concerned intermediaries and market frictions inside the U.S. trading system. The third concerned a different issue: whether U.S. regulators could inspect the audit firms behind foreign issuers whose securities traded in U.S. markets. Across both settings, the concern was the same: whether institutions standing between issuers and investors provided reliable information, fair access, and credible oversight. Several enforcement and regulatory episodes in the early 21st century focused less on classic issuer fraud than on institutions standing between issuers and investors. These episodes involved securities analysts, retail brokerages and market plumbing, and the audit firms behind some foreign issuers.

The Global Analyst Research Settlement of 2003 grew out of the dot-com era's research scandals, when major investment banks were accused of publishing overly favorable analyst reports while also seeking investment-banking business from the same companies. Later commentary treated the settlement as a major response to conflicts of interest in securities research because it sought to separate research from investment banking, required structural reforms, and tried to restore confidence in analyst reports as a source of information for investors.

A different intermediary issue came into view during the 2021 meme-stock episode. The sharp rise in heavily discussed retail stocks such as GameStop drew attention not only to speculation and social-media enthusiasm, but also to the way retail orders were routed and financed behind the scenes. Later commentary treated the episode as a stress test for market structure because zero-commission brokerage depended heavily on payment for order flow, while trading restrictions imposed by some brokers highlighted the role of clearing and collateral demands at a moment of intense retail participation.

Cross-border audit oversight raised a different issue. For years, U.S. regulators said they could not fully inspect the audit work of China-based or Hong Kong-based firms whose clients traded in U.S. markets. Later scholarship treated that standoff as significant because it limited the ability of U.S. authorities to test the reliability of financial statements used by investors. The Holding Foreign Companies Accountable Act (HFCAA) and the related dispute over Public Company Accounting Oversight Board (PCAOB) inspections therefore focused on whether foreign issuers could continue to access U.S. capital markets when the audit firms behind those listings remained partly beyond effective U.S. oversight.

These episodes involved different parts of the market, but each focused on the role of analysts, brokers, clearing arrangements, or auditors rather than on issuer misstatements alone.

Confidential deal information and insider trading (1986–1991)

The late-1980s Drexel and Milken matters asked a different enforcement question from the classic issuer-disclosure case: could Wall Street intermediaries be trusted with confidential deal information? The issue was not mainly whether one company had misstated its earnings. The issue was whether traders, financiers, and brokers who sat close to takeovers and junk-bond financing were using privileged access in ways that undermined market fairness. Later histories and legal commentary treat the episode as a turning point because enforcement moved deeper into the network of arbitrageurs, takeover specialists, and financing intermediaries that handled deal flow during the hostile-takeover era.

The Boesky case first exposed how far deal secrets could travel through Wall Street’s takeover network. In 1986, the SEC’s insider-trading case against Ivan Boesky widened scrutiny across the merger-arbitrage world and turned attention toward the broader circle of people who handled merger plans, tender-offer information, and takeover financing. Later accounts describe Boesky’s settlement and cooperation as the moment when enforcement began moving from suspicious trades themselves to the network that fed them. Legal histories of the period note that Boesky and Milken helped cement the public association between insider trading and hostile takeovers, because the investigations repeatedly centered on advance knowledge of pending deals.

Drexel then became the firm-level target of that wider investigation. Drexel had dominated the junk-bond market and played a central role in financing corporate raiders, so enforcement pressure no longer looked like a case against a lone trader. In 1989 the firm agreed to plead guilty to six felonies and to a $650 million settlement package. Later commentary treated Drexel’s collapse as significant not only because of the size of the penalty, but because it showed that regulators were prepared to pursue a major Wall Street intermediary at the center of the era’s takeover and high-yield bond machine.

Milken became the person-level test of the same question. In 1990 he agreed to plead guilty to six felony counts, including charges tied to stock-parking and related reporting schemes involving Boesky, and in 1991 he accepted a lifetime securities-industry bar. Retrospective accounts often present the Milken proceedings as the point at which enforcement moved fully beyond the image of insider trading as a rogue trader’s offense and toward a broader challenge to how confidential information and deal flow were handled inside Wall Street’s takeover network.

The lasting importance of the Boesky, Drexel, and Milken matters was that they pushed SEC enforcement deeper into Wall Street’s deal machinery. The lesson was not only that confidential information could be abused. The lesson was also that the intermediaries closest to takeover contests and junk-bond finance could become enforcement targets themselves when they used access, financing power, or deal structures in ways that undermined market fairness.

Madoff and the failure to detect a massive Ponzi scheme (2008–2009)

The Bernard Madoff scandal became an enforcement turning point because one of the largest investment frauds in U.S. history turned out to be, at bottom, a basic Ponzi scheme. Later commentary often treated the case as a brutal reminder that spectacular losses do not always come from novel financial engineering or doctrinal gray areas.

In Madoff’s case, the core fraud was simpler: fictitious trading, fabricated account statements, and supposedly steady returns that were not supported by real securities transactions. The scheme’s apparent success depended on records and performance claims, not on the investment strategy Madoff told clients he was running. Later accounts described a business that promised unusually consistent, market-resistant returns while masking the fact that client money was being used to meet redemption requests from earlier investors. That gap between the story told to investors and the basic mechanics of the operation is one reason the case later came to symbolize the danger of returns that seemed implausibly smooth or too good to be true.

Once Madoff confessed in December 2008, the enforcement response moved quickly. On December 11, 2008, the SEC filed an emergency civil action seeking an asset freeze and the appointment of a receiver, while federal prosecutors pursued a parallel criminal case. Madoff pleaded guilty in March 2009, and in June 2009 he was sentenced to 150 years in prison. In enforcement terms, the case stood out not because it produced a new doctrine, but because it showed the SEC responding to an enormous fraud whose basic structure fit squarely within traditional anti-fraud enforcement.

The case also became an enforcement reckoning inside the SEC. Later legal commentary treated Madoff as a catalyst for rethinking how the Division of Enforcement handled tips, built investigative expertise, and moved fraud leads across offices. In that sense, Madoff mattered not only because the fraud was vast, but because it pushed the agency toward a renewed emphasis on basic fraud detection, faster escalation, and more specialized enforcement capacity after 2008.

Conflicted asset selection in structured finance (2008–2010)

When the U.S. housing boom collapsed and mortgage losses spread through the financial system in 2007 and 2008, complex mortgage-linked securities became central to the crisis. Among the most controversial were synthetic collateralized debt obligations, which did not hold mortgages directly but instead used derivatives to create exposures to mortgage-backed securities.

These deals were hard to value, hard to explain, and often sold through layers of financial engineering that made it difficult for outsiders to see who had shaped the transaction and whose interests were aligned against it. In enforcement terms, the SEC faced a narrower problem than “who caused the financial crisis.” The question was what investors in these structured products had to be told about how the deal was assembled, who selected the underlying assets, and whether someone helping shape the product was also betting against it.

Later scholarship often treats the SEC’s 2010 Goldman Sachs ABACUS 2007-AC1 action as the clearest expression of that issue because it turned public anger over synthetic CDOs into a more familiar anti-fraud theory built around omissions, conflicts, and misleading deal descriptions. The ABACUS case gave that enforcement theory a concrete form. ABACUS 2007-AC1 was a synthetic CDO tied to subprime residential mortgage-backed securities.

Later accounts describe the dispute as turning on what Goldman told investors about the portfolio-selection process: the SEC alleged that the marketing of the deal gave investors the impression that portfolio selection had been made by an independent manager, ACA Management LLC, without adequately disclosing the role of Paulson & Co.—a hedge fund that helped shape the reference portfolio while planning to take a short position against the deal. Scholars have treated that alleged omission as the heart of the case because it converted a highly technical structured-finance transaction into a more familiar disclosure dispute over who knew what and what investors were told.

The SEC filed its action against Goldman and employee Fabrice Tourre in April 2010, and Goldman settled in July 2010 for $550 million, then the largest SEC penalty paid by a Wall Street firm. Later commentary treated the action as one of the agency’s signature post-crisis enforcement cases because it showed the SEC using traditional anti-fraud tools to challenge conflicts embedded in crisis-era product design and marketing.

The point of the case was not that the SEC could litigate the crisis itself. The point was that, in one emblematic deal, the agency alleged that investors were not told enough about who selected the assets and whose interests shaped the transaction. Later writing on ABACUS often used the case to illustrate both the reach and the limits of crisis-era enforcement. Its reach lay in showing that the SEC could attack omissions and conflicts in even highly technical structured products without needing a new crisis-specific doctrine. Its limits lay in the fact that case-by-case anti-fraud actions could address misleading deal descriptions, but could not by themselves resolve the broader problems of complexity and opacity in the structured-finance market.

SEC enforcement and offshore illicit finance (1972–1992)

Offshore finance created a distinctive enforcement problem for the Securities and Exchange Commission (SEC). Historical and legal scholarship on the rise of tax havens and offshore financial centers describes how secrecy jurisdictions, foreign shell companies, and fragmented supervision could frustrate beneficial-ownership inquiries, asset recovery, and the practical reach of U.S. courts.

In November 1972, the SEC sued Robert Vesco and dozens of other defendants, alleging that roughly $224 million had been diverted from IOS-managed funds through offshore banks, foreign corporations, and layered transactions. Later histories of the SEC and offshore finance treated the case as an early illustration of how difficult securities enforcement became once money, records, and defendants moved through foreign entities and beyond easy U.S. reach.

Vesco then left the United States and spent years moving among countries while civil, criminal, and extradition efforts continued. The affair also developed Watergate-era political overtones: later scholarship and contemporary accounts linked Vesco's $200,000 cash contribution to President Richard Nixon's reelection committee to efforts to blunt regulatory pressure arising from the SEC investigation.

Declassified Central Intelligence Agency records show that the Vesco matter drew attention beyond securities regulators: a 1973 memorandum reported that, after a request relayed from Treasury Secretary George Shultz, CIA analysts had reviewed SEC files on Vesco in October 1972. Secondary work on Caribbean illicit finance places Vesco's fugitive years in a broader offshore setting. Anthony P. Maingot, writing on Miami and Caribbean tax havens, cited contemporary reporting that associated Vesco with the region's narcotics-laundering milieu, while a Brookings study on organized crime and politics later used the Costa Rican Vesco episode as an example of how offshore money, smuggling allegations, and political patronage could intersect. Reporting from Vesco's Cuba years added allegations of smuggling activity and foreign-intelligence ties, but those later claims concerned Vesco's life as a fugitive rather than findings in the SEC's underlying civil case. The Bank of Credit and Commerce International (BCCI)–First American episode involved a different offshore problem: concealed control of a U.S. banking institution through nominees and layered ownership. Scholarship on BCCI describes the scandal as a case of fragmented supervision, hidden beneficial ownership, and large-scale money laundering spread across multiple jurisdictions. In U.S. securities-law terms, one early strand concerned disclosure. Official reviews and later histories stated that the SEC's 1978 lawsuit alleged that BCCI and related investors had failed to make required beneficial-ownership disclosures in acquiring shares of Financial General Bankshares, a predecessor of First American.

Later accounts linked that disclosure dispute to the bank's broader criminality. Senate, GAO, journal, and book treatments described how concealed control, nominee structures, and weak coordination delayed recognition of BCCI's role in First American, while a separate undercover case in Tampa exposed BCCI as a vehicle for laundering narcotics proceeds. Scholars and official reviews have treated BCCI as a leading example of how hidden ownership, illicit finance, and fragmented cross-border supervision could outrun ordinary lines of regulatory responsibility before a broader enforcement coalition finally closed in.

Market forensics after a national security shock (2001–2004)

After the September 11 attacks, federal authorities treated the possibility of advance-knowledge trading as a serious market-abuse question.

The SEC's chief of the Office of Market Surveillance opened an inquiry on September 12, 2001, and at a multi-agency meeting at FBI headquarters on September 17 the SEC took the lead on the insider-trading investigation while the Federal Bureau of Investigation (FBI) and the United States Department of Justice (DOJ) remained involved. The staff report said the investigation at times involved more than 40 SEC staff members and extensive coordination with self-regulatory organizations and foreign counterparts. It also reported that investigators examined more than 9.5 million securities transactions involving 103 companies and 32 index or exchange-traded funds, including short selling, put option activity, and other positions that could have profited from a sharp market decline.

Later academic work helps explain why the allegations gained traction. One study found unusually high put buying in airline-related options before the attacks, while another reported abnormal trading in S&P 500 index options, though neither study established that the trades were linked to the hijackers or to anyone with proven advance knowledge. The official investigation, however, rejected the best-known claims.

The 9/11 Commission Report and the Commission's staff monograph stated that exhaustive investigation by U.S. authorities and the securities industry found no evidence that anyone with advance knowledge of the attacks profited through securities transactions. The staff monograph said the most-publicized surges in put-option trading tied to UAL Corporation and AMR Corporation were traced to nonterrorist explanations, and it also reported that suspicious trading through offshore accounts included a profitable short position in a fund tracking a major U.S. market index that foreign investigators traced to a wealthy European speculator with a history of similar positions rather than to foreknowledge of the attacks.

Limits on the SEC enforcement toolkit (2017–2024)

From 2017 to 2024, a line of Supreme Court decisions placed meaningful limits on the SEC's enforcement toolkit. Together, Kokesh, Lucia, Liu, and Jarkesy narrowed the agency's freedom to seek certain monetary remedies, rely on in-house adjudication, and choose its forum for some contested fraud cases.

The first set of decisions tightened the rules for monetary remedies. In Kokesh v. SEC (2017), the Court treated SEC disgorgement as a penalty for statute-of-limitations purposes, subjecting many claims to the federal five-year limitations period. Later scholarship described the decision as a meaningful constraint on older enforcement cases and on the SEC's settlement leverage in long-running fraud matters. In Liu v. SEC (2020), the Court preserved disgorgement in principle but limited it to traditional equitable boundaries, generally tying awards to wrongdoers' net profits and to relief for investors rather than to punishment.

The second set of decisions reworked the SEC's administrative forum. In Lucia v. SEC (2018), the Court held that SEC administrative law judges were officers under the Appointments Clause and that a party subjected to an adjudication before an improperly appointed ALJ was entitled to a new hearing before a different, properly appointed adjudicator. In SEC v. Jarkesy (2024), the Court held that when the SEC seeks civil penalties for securities-fraud claims, the defendant is entitled to a jury trial, sharply reducing the agency's ability to resolve those contested penalty cases in-house. Later legal commentary treated Jarkesy as a major blow to one of the SEC's most important enforcement tools and as part of a broader judicial turn against expansive administrative adjudication.

SEC cases against major cryptocurrency firms (2019–2025)

In the late 2010s and early 2020s, the SEC used enforcement actions to press the view that large parts of the crypto market fell within existing securities law. The cases moved from token offerings and fraud claims toward broader allegations that major crypto trading platforms were operating as unregistered securities intermediaries.

The economic logic behind the SEC's crypto cases rested on four key arguments. First, supporters of the agency's registration-and-disclosure theory argued that when promoters know much more than outside buyers, mandatory disclosure can reduce information asymmetry and improve price formation, liquidity, and the cost of capital. Empirical studies of the 1964 Securities Acts Amendments, SEC reporting rules for OTC issuers, and ICO markets found that investors valued mandatory disclosure and that information asymmetry was a real problem in token offerings. Second, supporters of the SEC's substance-over-labels approach argued that economically similar capital-raising activity should face similar rules because lighter treatment invites regulatory arbitrage rather than eliminating the underlying risks. Empirical work across countries and in U.S. mortgage markets found that stronger securities laws and enforcement were associated with stronger markets, while financial activity often shifted into less regulated channels when regulation was lighter. Third, supporters of the SEC's anti-fraud theory argued that fraud weakens trust, raises the expected cost of market participation, and can be deterred when enforcement makes cheating more costly and disclosure rules more credible. Empirical studies found that households were less likely to invest in stocks when they viewed markets as unfair and that misconduct by financial advisers was common and often repeated, supporting the case that anti-fraud enforcement helps protect trust in markets. Fourth, the SEC's platform cases reflected the view that vertically integrated crypto firms can create conflicts of interest and information advantages that harm customers and market quality. Empirical research found that exchanges with stronger rules against manipulation, insider trading, and broker conflicts tended to have better liquidity, and that limiting conflicted incentives in retail finance could improve customer outcomes.

Early headline cases focused on token issuance and issuer conduct. In the Telegram matter (2019–2020), the SEC won an injunction blocking the planned distribution of Grams and later settled the case on terms requiring Telegram to return more than $1.2 billion to investors and pay an $18.5 million civil penalty. The Ripple litigation became the leading doctrinal fight over how the Howey test applied to crypto transactions. In July 2023, a federal judge held that Ripple's institutional sales of XRP violated securities law, while its programmatic sales on public exchanges did not; later commentary treated Ripple and Terraform as evidence that courts were reaching different conclusions when applying traditional investment-contract doctrine to crypto assets. In August 2024, Ripple was ordered to pay a $125 million civil penalty, and in 2025 the SEC ended the case with that judgment left in place.

Other major cases turned more directly on fraud and market structure. After the collapse of FTX in 2022, the SEC charged Sam Bankman-Fried with defrauding equity investors, while criminal prosecutors pursued parallel fraud charges tied to the misuse of customer funds. The SEC's civil case was stayed pending the criminal proceeding, and Bankman-Fried was later sentenced to 25 years in prison. In the Terraform Labs matter, the SEC alleged that investors had been misled about the Terra ecosystem and its purported stability mechanisms; after a jury verdict, Terraform and Do Kwon agreed to a roughly $4.47 billion settlement in 2024.

By 2023, the SEC had widened its theory from issuers to the market's largest intermediaries. Scholarship described the Binance and Coinbase cases as an attempt to bring crypto-trading platforms within the Exchange Act framework for exchanges, brokers, and clearing agencies, rather than focusing only on token sales. A federal judge allowed much of the SEC's case against Coinbase to proceed in 2024, but in 2025 the agency dismissed its civil actions against Coinbase and Binance as the Commission changed course on crypto policy. The overall result was mixed: the SEC won major recoveries in some issuer and fraud cases, but its effort to use existing securities-law categories to govern the broader crypto trading infrastructure produced uneven judicial and policy outcomes.

See also

• United States Securities and Exchange Commission
• Securities fraud
• Insider trading
• Foreign Corrupt Practices Act
• SEC v. W. J. Howey Co.
• SEC v. Jarkesy

Further reading

= External links =

• Historical Society of the SEC
• SEC Division of Enforcement