Investment Advisers Act of 1940: Who Must Register with the SEC

The Investment Advisers Act of 1940 sets asset-under-management thresholds that determine whether an investment adviser must register with the SEC or operates under state regulation. Most advisers fall under state jurisdiction unless they exceed specified AUM levels or manage certain fund types, though exemptions and exclusions significantly reshape the landscape.

The core registration framework

The Investment Advisers Act of 1940 requires investment advisers to register before offering advice, but it grants most advisers a choice of supervisor based on size. An adviser with fewer than $110 million in assets under management typically cannot register with the SEC; instead, it must register with the state regulators in which it operates and maintains its principal office. This is the default rule—most advisers operate under state registration.

Once an adviser crosses the $110 million threshold, it becomes eligible to register with the SEC. However, “eligible” does not mean “required”; an adviser above that threshold can choose to stay with state regulators if it prefers, provided it can still do so legally. The threshold exists to match regulatory burden with firm size: smaller advisers handle fewer clients and face simpler operational challenges, so state regulators provide proportionate oversight. Larger, multi-state operations face efficiency gains and consistency benefits by dealing with a single federal regulator.

The $110 million figure is not static. Congress and the SEC have adjusted it periodically, and the current standard reflects changes introduced in recent regulatory updates. Advisers near the threshold must track their AUM carefully, as crossing it triggers a registration obligation or option.

Private fund adviser exemptions

The definition of “investment adviser” itself contains important carve-outs. Advisers who manage only funds that fall into certain exempt categories can avoid registration entirely. The most significant is the private fund adviser exemption—an adviser managing solely private investment funds (hedge funds, private equity funds, fund-of-funds) with less than $150 million in assets under management does not have to register with anyone. The SEC introduced a higher AUM threshold for private fund advisers partly to reduce compliance burden on smaller private managers and partly because the 1940 Act considers private fund arrangements less in need of paternalistic investor protection than public mutual funds.

Additionally, advisers to venture capital funds benefit from an exemption if they meet specific definitional tests. An adviser that manages only venture capital funds and has less than $250 million in AUM need not register. Venture capital managers argue that their restricted capital structures, long lockup periods, and investor sophistication justify lighter-touch regulation.

Importantly, these exemptions do not mean “no rules.” An exempted adviser still faces prohibitions on fraud and fiduciary duty, enforced by the SEC and private claimants under anti-fraud provisions. The exemption merely suspends the mandatory registration process and periodic examination regime.

When SEC registration is mandatory

Once an adviser exceeds the private fund manager threshold for its category, registration with the SEC becomes unavoidable if it continues to offer advice to the public or to funds. An adviser with $150 million or more under management in private funds, or $110 million or more in traditional accounts, cannot legally operate without an SEC Form ADV on file.

The SEC registration process requires detailed disclosure on Form ADV, including:

• Business structure, officers, and key personnel
• Investment advisory services offered and fee structures
• Disciplinary history and conflicts of interest
• Client roster and account values (at aggregate level, not client-by-client)
• Custody and trading practices

Form ADV is updated annually and is available to the public via the SEC’s Investment Adviser Public Disclosure database. An adviser cannot hold itself out as registered with the SEC until the Form ADV is actually accepted.

Advisers to “institutional” clients and other exemptions

Beyond private fund advisers, the 1940 Act exempts advisers whose clients are exclusively “institutional investors.” A client is generally institutional if it owns at least $5 million in investments, works in the financial industry, or is a government entity. An adviser serving only such clients can avoid registration. The rationale is that institutional investors can hire their own diligence and legal resources, reducing the case for paternalistic regulation.

Advisers who manage only employee benefit plans under ERISA also fall outside SEC registration. Similarly, advisers to registered investment companies (mutual funds and closed-end funds) are typically registered by their status as affiliated advisers rather than through the general registration process, though they still file Form ADV.

State registration and dual compliance

Advisers registered with the SEC are not excused from state law. If an adviser has a place of business in a state, that state can impose additional registration requirements, anti-fraud rules, and bonding. Many SEC-registered advisers file simultaneously with multiple states where they maintain offices or solicit clients. The coordination between the SEC and the North American Securities Administrators Association (NASAA) streamlines this process but does not eliminate it.

An adviser can be registered with the SEC and one or more states at once. Some advisers deliberately choose to remain state-registered even if they cross the SEC threshold, particularly if they operate primarily in a single state or have legacy relationships with state regulators.

Examination and enforcement

The SEC examines registered advisers on a risk-based schedule, typically every four to five years for smaller firms and more frequently for larger or higher-risk operations. The exam covers compliance with the fiduciary duty, proper portfolio management, custody of client assets, and fee structures. State regulators similarly examine state-registered advisers.

Upon registration, an adviser becomes subject to SEC enforcement action for violations of the 1940 Act and the Securities Exchange Act of 1934. The SEC can censure, fine, suspend, or bar an adviser from the industry. State regulators have parallel power within their jurisdictions.

Practical threshold management

Advisers near the registration boundary often face strategic choices. A firm with $105 million in AUM might restrict growth to avoid SEC registration, preferring the relative lightness of state oversight. Conversely, a firm approaching $110 million might accelerate growth to justify the fixed cost of SEC compliance infrastructure. Mergers and acquisitions, staff departures, and market volatility can move AUM across thresholds unpredictably, requiring advisers to monitor their standing quarterly.

The Form ADV filing itself is a compliance cost—firms must employ compliance staff, update disclosures promptly, and maintain audit trails. Smaller state-registered advisers may struggle to justify these costs; larger firms treat SEC registration as a badge of scale and often market their federal status to institutional clients.

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