1.1 Regulatory Bodies

The U.S. securities industry operates under a layered regulatory structure. Understanding who regulates what is essential for the SIE exam — and for your career in finance.

The Regulatory Hierarchy

Think of securities regulation as a pyramid. At the top sits Congress, which passes laws like the Securities Act of 1933 and Securities Exchange Act of 1934. Below that, federal agencies and self-regulatory organizations (SROs) enforce these laws and create additional rules.

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Securities and Exchange Commission (SEC)

The Securities and Exchange Commission (SEC) is the primary federal regulator of the securities industry. Congress established it in 1934 following the stock market crash of 1929. According to the SEC, the agency oversees approximately $120 trillion in securities trading annually on U.S. equity markets.

Key Functions

• Enforces federal securities laws — The SEC investigates and prosecutes violations of securities laws, including fraud, insider trading, and market manipulation
• Reviews registration statements — Companies must register securities with the SEC before offering them to the public
• Oversees market participants — The SEC supervises exchanges, broker-dealers, investment advisers, and SROs like FINRA
• Protects investors — Through disclosure requirements, the SEC ensures investors receive accurate information

In Practice

When a company wants to go public through an IPO, it files a registration statement (Form S-1) with the SEC. The SEC staff reviews this document for compliance with disclosure requirements — but importantly, the SEC does not approve the investment or judge its merits, so an effective registration does not mean the investment is safe or recommended.

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Financial Industry Regulatory Authority (FINRA)

FINRA is the largest self-regulatory organization (SRO) overseeing broker-dealers in the United States. It operates under SEC supervision but is not a government agency — it's a private, non-profit organization. According to FINRA's 2024 Annual Report, the organization regulates approximately 3,400 broker-dealer firms and 624,000 registered representatives across the United States.

Key Functions

• Licenses securities professionals — FINRA administers qualification exams like the SIE, Series 7, and Series 63
• Creates and enforces rules — Broker-dealers must follow FINRA rules on sales practices, supervision, and customer protection
• Monitors trading activity — FINRA surveils markets to detect insider trading, manipulation, and other violations
• Examines member firms — Regular compliance inspections occur at least every four years

Important Distinction

FINRA regulates broker-dealers and their registered representatives, not investment advisers. Investment advisers are regulated by the SEC or state regulators depending on their assets under management.

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Municipal Securities Rulemaking Board (MSRB)

The Municipal Securities Rulemaking Board (MSRB) creates rules governing transactions in municipal securities (bonds issued by states, cities, and other local governments).

Key Functions

• Writes rules for municipal securities dealers and municipal advisors
• Operates EMMA — The Electronic Municipal Market Access system provides free public access to municipal bond information
• Does NOT enforce its own rules — FINRA and the SEC enforce MSRB rules for broker-dealers; banking regulators enforce them for banks

On the Exam

Remember: The MSRB is a rulemaking body, not an enforcement body. This distinction frequently appears on the SIE.

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Securities Investor Protection Corporation (SIPC)

SIPC (Securities Investor Protection Corporation) is a non-profit corporation that protects customers if a brokerage firm fails. Most registered broker-dealers must be SIPC members; the law excludes, for example, firms whose principal business is outside the United States and firms whose business is only distributing mutual fund or UIT shares, selling variable annuities or insurance, or advising registered investment companies. SIPC protection covers up to $500,000 per customer in each separate capacity (including a $250,000 limit for cash claims); accounts held in the same capacity are combined. SIPC reports that since its creation in 1970 it has advanced $3.6 billion to make possible the recovery of $143.8 billion in assets for an estimated 773,000 investors.

Coverage Details

Critical Point

SIPC is not like FDIC insurance for banks. SIPC only protects against broker-dealer failure — if the firm goes bankrupt and your assets are missing. It does not protect you if your investments lose value.

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Federal Reserve Board

The Federal Reserve (often called "the Fed") is the central bank of the United States. While not primarily a securities regulator, it plays important roles relevant to the SIE.

Key Functions

• Sets monetary policy — Controls interest rates and money supply, which affects securities prices
• Regulates margin requirements — Regulation T governs how much investors can borrow to buy securities
• Supervises bank holding companies — Including those that own broker-dealers

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How Regulators Work Together

These regulators don't operate in isolation — they coordinate oversight:

1. SEC oversees FINRA and approves its rules
2. FINRA enforces SEC rules and its own rules at broker-dealers
3. MSRB writes rules that FINRA and the SEC enforce
4. SIPC steps in only when a broker-dealer fails

Real-World Example

If a registered representative at a broker-dealer commits fraud selling municipal bonds:

• FINRA would investigate the rep's conduct and potentially bar them from the industry
• SEC could bring civil charges
• MSRB rules would determine what standards were violated
• SIPC would only be involved if the broker-dealer itself failed

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Key Takeaways

• The SEC is the ultimate federal authority over securities markets
• FINRA directly regulates broker-dealers and their employees
• The MSRB writes rules for municipal securities but doesn't enforce them
• SIPC protects customers when brokerage firms fail — not from market losses
• The Federal Reserve influences markets through monetary policy and margin rules