Reference

Glossary of financial-markets law

A curated reference of terms used across U.S. securities and derivatives regulation, broker-dealer compliance, SRO arbitration, and expert-witness practice. Each entry cites primary sources where applicable. Definitions are organized alphabetically; the linked terms above jump to each letter section.

A

AML (Anti-Money Laundering)

A regulatory framework requiring financial firms to establish programs to detect and report transactions that may involve the proceeds of crime or terrorism financing. Under the Bank Secrecy Act, FINRA Rule 3310, and NFA Compliance Rule 2-9(c), broker-dealers and futures commission merchants must maintain written AML programs.

AMLA (Anti-Money Laundering Act of 2020)

Title LXIV of the National Defense Authorization Act for Fiscal Year 2021 (Pub. L. 116-283). Significantly modernized U.S. anti-money-laundering law, establishing the beneficial ownership reporting regime and creating the FinCEN whistleblower program (31 U.S.C. § 5323). The whistleblower program was further expanded by the Anti-Money Laundering Whistleblower Improvement Act of 2022, enacted as part of the Consolidated Appropriations Act, 2023 (Pub. L. 117-328).

Arbitration

A binding alternative-dispute-resolution process in which parties present claims to a neutral arbitrator or panel instead of a court. In financial-markets disputes, arbitration is typically governed by the Federal Arbitration Act and conducted through forums such as FINRA Dispute Resolution Services, the NFA arbitration program, or international tribunals like the LCIA and ICC.

Associated Person

Any partner, officer, director, employee, or other person engaged in the securities or futures business of a registered firm, as defined under Section 3(a)(18) of the Exchange Act and Section 4k of the Commodity Exchange Act. Associated persons of broker-dealers register with FINRA via Form U4; associated persons of futures firms register with NFA.

AWC (Acceptance, Waiver, and Consent)

A settlement document used by FINRA enforcement staff to resolve disciplinary matters without a formal hearing. By signing an AWC, the respondent accepts findings of fact, consents to specified sanctions, and waives the right to contest the matter.

B

Banging the Close

A form of marking the close in which a trader executes a large, aggressive order during the closing range to push the settlement price in a desired direction. Addressed primarily under CFTC Rules 180.1 and 180.2 for derivatives markets and through exchange-level rules on order entry timing.

Best Execution

The obligation of a broker-dealer to seek the most favorable terms reasonably available for a customer’s order, considering price, speed, likelihood of execution, and other factors. FINRA Rule 5310 codifies this obligation; related obligations exist under CFTC Part 23 (swap dealers) and various NFA rules.

Broker-Dealer

A firm engaged in the business of effecting transactions in securities for the accounts of others (broker function) or for its own account (dealer function). Broker-dealers register with the SEC under Section 15 of the Exchange Act and must become FINRA members under Section 15(b)(8).

C

CFTC (Commodity Futures Trading Commission)

The federal agency that regulates U.S. derivatives markets — futures, swaps, options on futures, and certain retail commodity transactions — under the Commodity Exchange Act. Established in 1974, the CFTC oversees designated contract markets, swap execution facilities, and futures industry intermediaries.

Churning

Excessive trading in a customer’s account by a broker for the purpose of generating commissions, in disregard of the customer’s investment objectives. Churning violates FINRA Rule 2010 and may constitute fraud under Section 10(b) and Rule 10b-5.

Commodity Pool Operator (CPO)

A person or firm that operates a pooled investment vehicle (commodity pool) that trades commodity futures, options, or swaps. CPOs register with the CFTC and are NFA members; their obligations include disclosure documents, periodic reporting, and recordkeeping under CFTC Regulations Part 4.

Commodity Trading Advisor (CTA)

A person or firm that, for compensation or profit, advises others on the value of or advisability of trading futures, options on futures, swaps, or certain commodity transactions. CTAs register with the CFTC and are NFA members; their obligations include disclosure documents, recordkeeping, and capital requirements under CFTC Regulations Part 4.

D

Daubert Standard

The federal standard for the admissibility of expert testimony established in Daubert v. Merrell Dow Pharmaceuticals (1993) and codified in Federal Rule of Evidence 702. Trial courts act as gatekeepers assessing whether expert opinions rest on reliable principles and methods, considering factors such as testability, peer review, error rates, and general acceptance.

Designated Contract Market (DCM)

An exchange registered with the CFTC under Section 5 of the Commodity Exchange Act for trading futures, options on futures, swaps, and event contracts. DCMs operate under 23 core principles (CEA Section 5(d)) including market surveillance, position limits, trade execution requirements, and the impartial-access requirement under CFTC Rule 38.151(b). Major DCMs include CME, ICE Futures U.S., the New York Mercantile Exchange, and the prediction-market operators KalshiEX, Polymarket US (via QCEX), LedgerX/MIAX, and Gemini Titan. See the Prediction Markets topic resource for the regulatory framework applicable to prediction-market DCMs.

Disgorgement

An equitable remedy requiring a wrongdoer to surrender profits derived from violations of securities or commodity laws. Following Liu v. SEC (2020), SEC disgorgement is generally limited to net profits and must be awarded for the benefit of victims; the NDAA of 2021 extended the limitations period for fraud-based disgorgement to ten years.

Dodd-Frank Act

The Dodd-Frank Wall Street Reform and Consumer Protection Act of 2010. The Act overhauled U.S. financial regulation following the 2008 financial crisis, creating new oversight of swaps, establishing the Consumer Financial Protection Bureau, mandating proprietary-trading restrictions (the Volcker Rule), and strengthening enforcement and whistleblower programs.

DOJ Corporate Whistleblower Awards Pilot Program

A pilot program launched on August 1, 2024 by the Department of Justice Criminal Division and substantially expanded in May 2025, designed to incentivize reporting of corporate misconduct in areas not covered by other federal whistleblower programs. The original categories were violations by financial institutions outside FinCEN’s program, foreign corruption outside the SEC’s program (including FCPA and FEPA violations not involving issuers), domestic corruption, and federal health care offenses (originally limited to private insurers; that limitation was removed in May 2025). The May 2025 expansion added cartels and transnational criminal organizations, federal immigration violations, material support of terrorism, sanctions offenses, trade/tariff/customs fraud, and procurement and federal program fraud. Awards of up to 30% of the first $100 million in net forfeited proceeds and up to 5% of the next $400 million may be paid in the Department’s sole discretion.

E

Eddie Murphy Rule

Common shorthand for CEA Section 4c(a)(4) (7 U.S.C. § 6c(a)(4)), which prohibits federal government employees from trading commodity interests, including event contracts on CFTC-registered prediction markets, on the basis of material nonpublic information obtained from their government employment. Named for the 1983 film Trading Places. Parallels and overlaps with the STOCK Act provisions for members of Congress, and with CEA Sections 9(d) and (e) for CFTC, exchange, and SRO employees. Central to insider-trading enforcement on prediction markets where government employees trade on classified or otherwise confidential government information; see United States v. Van Dyke (S.D.N.Y., indictment unsealed April 23, 2026), the first U.S. criminal prosecution for prediction-market insider trading. See also the Prediction Markets topic resource.

EFAA (Ending Forced Arbitration of Sexual Assault and Sexual Harassment Act)

A 2022 amendment to the Federal Arbitration Act (9 U.S.C. § 402) that renders pre-dispute arbitration agreements and class-action waivers unenforceable, at the claimant’s election, for claims of sexual assault or sexual harassment. The EFAA applies to any dispute or claim that arises or accrues on or after March 3, 2022.

Event Contract

A derivative contract whose payoff is contingent on the occurrence, non-occurrence, or extent of a specified future event. Most event contracts are binary, paying a fixed amount if the predicted outcome occurs and zero otherwise. In the United States, event contracts listed on Designated Contract Markets are regulated by the CFTC as swaps under Commodity Exchange Act Section 1a(47) and are subject to the Special Rule at CEA Section 5c(c)(5)(C) and 17 C.F.R. § 40.11, which permits the CFTC to prohibit contracts involving enumerated categories of activity (terrorism, assassination, war, gaming, and activity unlawful under federal or state law). See the Prediction Markets topic resource.

Expert Witness

A person qualified by knowledge, skill, experience, training, or education to provide opinion testimony on technical or specialized matters at issue in litigation or arbitration. Admissibility in federal court is governed by Federal Rule of Evidence 702 and the Daubert/Kumho Tire standards.

F

FAA (Federal Arbitration Act)

The federal statute (9 U.S.C. § 1 et seq.) providing for the validity and enforcement of arbitration agreements in contracts involving interstate commerce. The FAA establishes the framework for compelling arbitration, confirming awards, and vacating awards on limited grounds enumerated in Section 10.

FinCEN Whistleblower Program

The whistleblower program of the Financial Crimes Enforcement Network, established by Section 6314 of the Anti-Money Laundering Act of 2020 (31 U.S.C. § 5323) and significantly expanded by the Anti-Money Laundering Whistleblower Improvement Act of 2022, enacted as part of the Consolidated Appropriations Act, 2023 (Pub. L. 117-328). Covers violations of the Bank Secrecy Act and U.S. economic sanctions laws administered by OFAC — principally the International Emergency Economic Powers Act, the Trading with the Enemy Act, and the Foreign Narcotics Kingpin Designation Act. Awards of 10–30% of sanctions exceeding $1 million may be paid. Anti-retaliation provisions at 31 U.S.C. § 5323(g) parallel the SEC and CFTC programs, administered by the Department of Labor with a private right of action in federal court if no DOL final decision issues within 180 days. FinCEN published a Notice of Proposed Rulemaking implementing the program on April 1, 2026; awards will not be processed until final rules are issued.

FINRA (Financial Industry Regulatory Authority)

The largest self-regulatory organization for U.S. broker-dealers, registered with the SEC under Section 15A of the Exchange Act. FINRA examines firms, enforces rules of conduct, administers qualification examinations, and operates the FINRA Dispute Resolution Services arbitration forum.

Foreign Exchange Fix

A daily benchmark price for currency pairs calculated from trades during a defined window. The most prominent are the WM/Reuters 4 p.m. London Fix and the European Central Bank’s 1:15 p.m. fix. Coordinated manipulation of these fixes by FX traders at major global banks resulted in over $10 billion in collective penalties from U.S. and foreign regulators between 2013 and 2015 and catalyzed the development of the FX Global Code.

Form TCR (Tip, Complaint, or Referral)

The standardized form used to submit information to the SEC regarding potential securities-law violations. Submissions through Form TCR are required to qualify for an award under the SEC Whistleblower Program (15 U.S.C. § 78u-6, 17 C.F.R. § 240.21F-9).

Form U4 / Form U5

Standardized registration forms used by FINRA and other SROs. Form U4 records an associated person’s employment history, disclosures, and licenses; Form U5 reports separation from a firm, including the reason for termination and any reportable events.

Futures Commission Merchant (FCM)

A firm that solicits or accepts orders for the purchase or sale of commodity futures, options, or swaps and accepts customer funds or property to margin or guarantee those trades. FCMs register with the CFTC, are NFA members, and are subject to minimum-net-capital, segregation, and recordkeeping requirements.

FX Global Code

A non-binding code of conduct for the wholesale foreign exchange market, developed by the Global Foreign Exchange Committee and major central banks (including the Federal Reserve, the European Central Bank, the Bank of England, and the Bank of Japan). First published in May 2017, and subsequently revised, the Code articulates principles for ethics, governance, execution, information sharing, risk management, and confirmation and settlement. Major market participants sign Statements of Commitment indicating adherence on a “comply or explain” basis.

I

Insider Trading

Trading in a security on the basis of material non-public information in breach of a duty of trust or confidence. Liability arises under Section 10(b) and Rule 10b-5. Key cases: Chiarella v. United States, 445 U.S. 222 (1980) established the classical theory; Dirks v. SEC, 463 U.S. 646 (1983) added the personal-benefit test for tipper-tippee liability; United States v. O’Hagan, 521 U.S. 642 (1997) established the misappropriation theory; and Salman v. United States, 580 U.S. 39 (2016) refined the personal-benefit test.

Introducing Broker (IB)

A firm that solicits or accepts orders for futures, options, or swaps but does not accept customer funds — it introduces customers to a futures commission merchant that holds the funds and clears the trades. IBs register with the CFTC and are NFA members.

Investment Adviser

A person or firm that, for compensation, engages in the business of advising others as to the value of securities or the advisability of investing in securities. Investment advisers register with the SEC or state securities regulators under the Investment Advisers Act of 1940 and are subject to fiduciary duties.

K

Kumho Tire

Kumho Tire Co. v. Carmichael, 526 U.S. 137 (1999). The Supreme Court extended the Daubert gatekeeping function to all expert testimony, not just scientific testimony, including specialized or technical knowledge — which encompasses most financial-markets expert testimony.

L

Layering

A market manipulation technique involving placing multiple orders at different price levels to create a false appearance of market depth, then cancelling them before execution. Frequently charged in conjunction with spoofing under CFTC Rule 180.1 for derivatives markets and under Section 9(a) of the Exchange Act and Rule 10b-5 for securities markets.

M

Manipulation

Conduct intended to deceive or defraud investors by artificially affecting market prices or trading activity. Manipulation is prohibited under Section 9(a) of the Exchange Act, Section 6(c)(3) of the Commodity Exchange Act (as amended by Dodd-Frank), and CFTC Rules 180.1 and 180.2; common forms include marking the close, wash trading, spoofing, and pump-and-dump schemes.

Marking the Close

Conduct designed to influence the closing or settlement price on which positions are marked to market or contracts are settled. Addressed primarily through CFTC Rules 180.1 and 180.2 for derivatives markets and Section 9(a) of the Exchange Act for securities markets. Banging the close is a specific aggressive form.

Material Misrepresentation

A false statement or omission that a reasonable investor would consider important in making an investment decision. Under Rule 10b-5 and Basic Inc. v. Levinson (1988), materiality is a mixed question of law and fact assessed in light of the total mix of information available to investors.

Misappropriation Theory

Theory of insider-trading liability under which a person who trades on material nonpublic information in breach of a duty of trust or confidence owed to the source of the information violates federal anti-fraud rules. Established under Section 10(b) and SEC Rule 10b-5 in United States v. O’Hagan, 521 U.S. 642 (1997); reaffirmed in the tipping context in Salman v. United States, 580 U.S. 39 (2016); extended to non-disclosure-agreement settings in United States v. Chow, 993 F.3d 125 (2d Cir. 2021). Incorporated into CFTC anti-fraud enforcement via CFTC Rule 180.1. Distinguished from the classical theory of insider trading, under which the trader owes a duty directly to the issuer’s shareholders. Central to insider-trading enforcement on prediction markets; see the Prediction Markets topic resource.

N

NFA (National Futures Association)

The self-regulatory organization for the U.S. futures, options, and derivatives industry, designated by the CFTC under Section 17 of the Commodity Exchange Act. NFA registers futures commission merchants, introducing brokers, commodity pool operators, commodity trading advisors, and their associated persons.

NFA Compliance Rule 2-2 (Fraud and Related Matters)

The NFA’s principal anti-fraud rule. Rule 2-2 prohibits members and associates from cheating, defrauding, or deceiving customers and counterparties, and from willfully submitting materially false or misleading reports. The rule also bars willful violations of the Commodity Exchange Act, CFTC regulations, and NFA rules. Rule 2-2 provides NFA with broad authority to discipline misconduct meeting the threshold of fraud or willful violation, distinct from the just-and-equitable-principles standard of Rule 2-4.

NFA Compliance Rule 2-4 (Just and Equitable Principles of Trade)

The NFA’s principal conduct-standards rule. Rule 2-4 requires members and associates to observe high standards of commercial honor and just and equitable principles of trade. Often described as a “catch-all” conduct rule, it gives NFA the flexibility to discipline conduct that falls short of the fraud standard of Rule 2-2 but is nonetheless inconsistent with industry integrity. The FINRA analogue is FINRA Rule 2010.

P

Prediction Market

An exchange on which participants buy and sell event contracts whose payoff is contingent on the outcomes of future events such as elections, sporting contests, geopolitical developments, or economic indicators. Principal U.S. operators in 2026 include Kalshi (CFTC-registered Designated Contract Market since 2020), Polymarket US (relaunched via the July 2025 acquisition of QCEX, a CFTC-licensed DCM), PredictIt (operating under a CFTC no-action letter following the 2025 judgment in Clarke v. CFTC), Gemini Titan (CFTC-approved DCM as of December 2025), and LedgerX/MIAX. Whether sports-related event contracts qualify as “swaps” under CEA Section 1a(47) and whether the CEA preempts state gambling laws as applied to prediction markets are the central contested legal questions in active federal-state litigation as of 2026. See the Prediction Markets topic resource.

R

Reg BI (Regulation Best Interest)

SEC Rule 15l-1, effective June 30, 2020, requires broker-dealers to act in the best interest of retail customers when making recommendations, without placing the firm’s or associated person’s financial interest ahead of the customer’s. Reg BI imposes four component obligations: disclosure, care, conflict of interest, and compliance.

Reparations (CFTC)

Administrative complaint forum at the CFTC for customer claims against CFTC-registered firms or individuals alleging Commodity Exchange Act or CFTC-rule violations resulting in damages. Established by CEA Section 14 (7 U.S.C. § 18) and implemented at 17 C.F.R. Part 12. Two-year statute of limitations from the violation or constructive notice. Proceedings are conducted by CFTC Judgment Officers; appeals run to the full Commission and then to the federal courts of appeals. Out-of-pocket damages are the standard measure; punitive damages and most consequential damages are not available. Reparations is unavailable if the same claim is being pursued in parallel arbitration or court litigation. Most natural for claims against registered intermediaries (FCMs, IBs) rather than against DCM operators directly.

Rule 10b-5

SEC Rule 17 C.F.R. § 240.10b-5, promulgated under Section 10(b) of the Exchange Act, prohibits any manipulative or deceptive device or contrivance in connection with the purchase or sale of any security. It is the principal federal anti-fraud rule and the basis for private securities-fraud class actions, SEC enforcement actions, and insider-trading liability.

Rule 12200 (FINRA)

The FINRA Code of Arbitration Procedure for Customer Disputes provision requiring members and associated persons to arbitrate disputes with customers upon the customer’s demand, when the dispute arises out of the business activities of the firm.

S

SAR (Suspicious Activity Report)

A confidential report to FinCEN required by the Bank Secrecy Act when a financial firm detects a transaction that is suspicious, lacks apparent business justification, or appears designed to evade reporting requirements. For broker-dealers, the threshold is $5,000 or more; SARs must be filed within 30 calendar days of detection.

Sarbanes-Oxley Section 806

The whistleblower anti-retaliation provision of the Sarbanes-Oxley Act of 2002, codified at 18 U.S.C. § 1514A. Provides protection from retaliation for employees of publicly traded companies who report violations of securities laws or any rule or regulation of the SEC. Unlike the Dodd-Frank anti-retaliation provision, Section 806 protects internal reporting. Remedies are pursued first administratively through OSHA, with a private action available if no final agency decision issues within 180 days.

SEC (Securities and Exchange Commission)

The federal agency that regulates U.S. securities markets, including the issuance, trading, and intermediation of securities. Established by Section 4 of the Securities Exchange Act of 1934, the SEC oversees public companies, registered investment advisers, broker-dealers, exchanges, clearing agencies, and self-regulatory organizations.

Special Rule (CEA § 5c(c)(5)(C))

Statutory authority under which the CFTC may prohibit a self-certified event contract that “involves, relates to, or references” (i) activity unlawful under federal or state law, (ii) terrorism, (iii) assassination, (iv) war, (v) gaming, or (vi) other similar activity determined by the Commission to be contrary to the public interest. Codified at 7 U.S.C. § 7a-2(c)(5)(C); implemented at 17 C.F.R. § 40.11. Construed in KalshiEX LLC v. CFTC (D.D.C., September 2024) to require that the contract’s underlying event — not the act of trading itself — fall within the enumerated activities, with the court holding that elections are not “gaming.” The CFTC dropped its appeal of the ruling on May 5, 2025. A May 2024 proposed amendment that would have expanded “gaming” to include political contests was withdrawn in February 2026. See the Prediction Markets topic resource.

Spoofing

Bidding or offering with the intent to cancel the bid or offer before execution. Specifically prohibited in U.S. derivatives markets under Section 4c(a)(5)(C) of the Commodity Exchange Act, established by Dodd-Frank in 2010. The first criminal spoofing conviction was United States v. Coscia, 866 F.3d 782 (7th Cir. 2017). Securities-market spoofing is addressed under Section 9(a) of the Exchange Act and Rule 10b-5.

SRO (Self-Regulatory Organization)

A non-governmental organization with regulatory authority over its members, operating under federal oversight. FINRA (under SEC oversight) and the NFA (under CFTC oversight) are the principal SROs in U.S. financial markets; national securities exchanges and clearing agencies are also SROs.

Statute of Anne

British statute (8 Anne c. 14) enacted in 1710 to curb gambling excesses by voiding gambling debts and authorizing recovery of losses, including by third-party private attorneys general where the loser failed to sue within three months. Incorporated into the common law of the American colonies and now reflected in the gambling-loss-recovery statutes of more than thirty U.S. states (for example, Kentucky Revised Statutes § 372.020; D.C. Code § 16-1702; Mass. Gen. L. ch. 137 § 1). Invoked as the basis for coordinated multi-state class actions against prediction-market operators since mid-2025 by a litigation campaign funded by Veridis Management LLC; the most recent action is Roberts v. KalshiEX LLC (W.D. Ky., filed May 11, 2026). See the Prediction Markets topic resource.

Suitability

The obligation under FINRA Rule 2111 for a broker-dealer to have a reasonable basis to believe a recommended transaction or investment strategy is suitable for the customer based on the customer’s investment profile. Suitability has three components: reasonable-basis, customer-specific, and quantitative.

Supervisory Obligation

The duty of broker-dealer and futures firms to establish and maintain a system reasonably designed to achieve compliance with applicable securities or commodity laws and rules. FINRA Rule 3110 and NFA Compliance Rule 2-9 are the principal supervisory rules; failure to supervise is an independent ground for enforcement.

Swap Execution Facility (SEF)

A trading platform regulated under Section 5h of the Commodity Exchange Act for execution of swaps. SEFs operate under 15 core principles (CEA Section 5h(f)) including impartial access and trading-process transparency. Required by Dodd-Frank for swaps that are subject to the trade execution requirement.

V

Vacatur

The judicial process of setting aside an arbitration award. Under Section 10 of the Federal Arbitration Act, vacatur is available only on limited grounds: (1) corruption, fraud, or undue means; (2) evident partiality or corruption; (3) misbehavior by which any party’s rights have been prejudiced (including refusing to postpone the hearing or hear material evidence); or (4) the arbitrators exceeding their powers. Hall Street Associates, L.L.C. v. Mattel, Inc., 552 U.S. 576 (2008) held that these grounds are exclusive in federal court.

W

Wash Trading

A transaction or series of transactions that have the appearance of a trade but involve no change in beneficial ownership, or that are pre-arranged. Prohibited in derivatives markets under Section 4c(a)(1) of the Commodity Exchange Act and CFTC Regulations 1.38 and 1.39. Used to inflate apparent trading volume or to create misleading market activity.

Wells Notice

A formal letter from SEC or CFTC enforcement staff informing the recipient that staff intends to recommend that the Commission authorize enforcement action. The notice gives the recipient an opportunity to submit a written response (the Wells submission) arguing why enforcement should not be brought.

Whistleblower

A person who reports violations of securities or commodity laws to the SEC or CFTC and may be entitled to a monetary award of 10–30% of sanctions exceeding $1 million collected as a result of the information. The SEC whistleblower program operates under Section 21F of the Exchange Act; the CFTC program operates under Section 23 of the Commodity Exchange Act, both established by Dodd-Frank. Additional programs include the FinCEN/OFAC AML Whistleblower Program (31 U.S.C. § 5323) and the DOJ Criminal Division Corporate Whistleblower Awards Pilot Program (launched 2024, expanded 2025).