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The Adviser’s Guide to Material Nonpublic Information

Nov 14, 2025

What is MNPI? – Defining “Material” and “Non-Public”

The Meaning of “Material” in the MNPI Context

Material information is any data that a reasonable investor would likely consider important in making an investment decision. This includes information that could affect the market value of a security or influence a buy/sell decision.

If you come into contact with MNPI, you are not permitted to use it for your personal benefit. You are also not allowed to disseminate the information so others (including family members, friends, colleagues, or clients) can gain from it either.

Attend Comply’s upcoming education session Two Persistent Compliance Challenges: Insider Trading and Advisory Contracts to learn more.

Examples: – A pending merger or acquisition – Unexpected earnings results – Regulatory approval or denial of a product

What Qualifies as “Non-Public” Information?

Information is non-public if it has not been disseminated in a manner making it available to the investing public. Even if a few people are aware, unless it’s broadly and publicly available (e.g., via a press release or SEC filing), it’s non-public.

Illustrative Examples of MNPI in Practice

Whether a particular piece of information is MNPI depends on a fact‑specific analysis of materiality and non‑public status; mere advance knowledge alone is not automatically MNPI unless it meets both prongs. For example:

  • Learning about a CEO resignation before it’s publicly announced
  • Accessing a client’s portfolio strategy during a blackout period
  • Receiving pre-IPO financials through an expert network

Why MNPI Matters to Financial Advisers

How MNPI Misuse Undermines Fiduciary Duty

As fiduciaries, advisers must act in clients’ best interests. Trading on or failing to control MNPI violates this duty and creates conflicts of interest.

Insider Trading Risks and Adviser–Client Relationships

If advisers or their personnel use MNPI—intentionally or otherwise—it erodes trust and exposes both the adviser and client to regulatory and financial harm.

Reputational and Regulatory Consequences

Even inadvertent misuse can lead to enforcement actions, reputational damage, and client loss. Regulatory penalties for MNPI violations are severe.

Regulatory and Legal Framework for Advisers

Section 204A of the Investment Advisers Act of 1940

Section 204A of the Investment Advisers Act of 1940 requires an investment adviser to establish, maintain and enforce written policies and procedures that are reasonably designed—taking into account the nature of the adviser’s business—to prevent the misuse of material non‑public information (MNPI) by the adviser or any person associated with the adviser. The implementing regulation for many advisers is Adviser Act Rule 204A‑1 (the Code of Ethics Rule).

Rule 206(4)-7 (Compliance Rule)

Under Advisers Act Rule 206(4)‑7, an SEC‑registered investment adviser must adopt and implement written policies and procedures reasonably designed to prevent violation of the Advisers Act and its rules (including the misuse of MNPI). The adviser must review, at least annually, the adequacy of the policies and procedures and make any necessary changes.

SEC Risk Alerts and Guidance

The 2022 SEC Risk Alert highlighted common deficiencies: poor documentation of MNPI policies, lack of controls around alternative data and expert networks, and untrained access persons.

Who is Covered – Access Persons, Advisers, Outsiders

Defining Access Persons

Under the adviser’s Code of Ethics (as required by Rule 204A‑1), an ‘access person’ is a supervised person who (i) has access to non‑public information about client transactions or reportable fund holdings, (ii) is in a position to affect the advice given to clients, or (iii) has access to such advice. Typically this includes portfolio managers, traders, senior officers, and persons who may receive MNPI through alternative means. The adviser’s policy should define and identify access persons and monitor their holdings and trades accordingly.

“Access persons” are employees with access to nonpublic information about client holdings or firm recommendations. This typically includes portfolio managers, traders, and C-level executives.

Family, Clients, and Third Parties

Firms must account for risk from: – Employees sharing MNPI with friends or family – Clients who could act on shared portfolio or firm insight – Outside parties like consultants or expert networks

Private Market Exposures

Even private funds and venture capital investors may encounter MNPI through board seats or fund co-investments.

Common Sources and Types of MNPI Relevant to Advisers

Traditional Sources

  • Mergers and acquisitions
  • Leadership changes
  • Non-public financial results

Non-Traditional Sources

  • Expert networks
  • Satellite imaging and geolocation data
  • AI-generated consumer behavior insights

Adviser-Specific Scenarios

  • Exposure through fund manager conversations
  • Data received during diligence or issuer discussions
  • MNPI from access to public company insiders

Identifying Materiality and Non-Public Status

The “Reasonable Investor” Test

If a reasonable investor would consider the information important, it’s material. Legal precedent often leans on this standard.

When Information Ceases to be Non-Public

Information typically ceases to be non‑public when it has been disseminated in a way that makes it available to the investing public—for example, via an SEC filing, widely‑distributed press release or publicly‑accessible investor call—and enough time has passed for the market to absorb it. Firms often set internal cooling‑off or waiting periods to ensure the information is broadly disseminated before trading.

Adviser Obligations: Policies, Procedures, and Training

Designing a Written Policy

Advisers must create clear MNPI policies tailored to their firm structure, business model, and risk profile.

Tailoring to Your Business Model

For firms using expert networks or accessing alternative data, policies must define: – Permitted and prohibited information types – Internal firewalls and access restrictions

Training and Monitoring

Firms must: – Train staff regularly on MNPI scenarios – Maintain training logs – Monitor access and trade logs

Information Barriers, Restricted Lists, and Access Controls

Implementing Barriers

Firms should implement physical and digital barriers (e.g., separate systems, access rights) to manage MNPI.

Restricted and Watch Lists

Firms should maintain and update restricted lists and watch lists for securities with known MNPI exposure.

Monitoring & Surveillance

Systems should flag: – Trades during restricted periods – MNPI access preceding trade activity

Handling MNPI in Adviser Workflows

When You Encounter MNPI

Document the incident, restrict affected securities, and notify compliance.

Adjusting Portfolio Management and Communications

Delay trading activity until information becomes public. Communicate caution to clients without revealing MNPI.

Exit Strategies and Timing

Use post-disclosure cooling-off periods before initiating trades.

Enforcement Examples and Lessons for Advisers

Real-World Enforcement

The SEC has charged advisory firms for MNPI lapses in connection with board seats, expert calls, and client information misuse.

Common Deficiencies Noted by Regulators

  • No documentation of restricted list updates
  • Failure to supervise access persons
  • Inconsistent trade surveillance

Key Lessons

  • MNPI lapses often stem from control gaps
  • Documentation is as critical as intention
  • Oversight must be proactive, not reactive

Integrating MNPI Risk into Your Compliance Framework

Conduct a Risk Assessment

Identify business units, employees, vendors, or scenarios with higher MNPI exposure.

Connect to Policies and Controls

Each MNPI risk must tie to a specific policy, review process, and training control.

Escalation and Reporting Paths

Create documented processes for escalating and remediating MNPI breaches.

Practical Checklist for Financial Advisers

This checklist is a starting point — firms should tailor each item to their business, and documentation of the risk‑analysis and effectiveness testing is critical.

  1. Review and update MNPI policy
  2. Identify all access persons
  3. Maintain restricted and watch lists
  4. Log and monitor expert network engagements
  5. Implement MNPI training at least annually
  6. Document incidents and escalations
  7. Review trades for potential MNPI conflicts
  8. Assess vendor risk for data sources
  9. Test compliance with your policies quarterly
  10. Update compliance calendar with MNPI tasks

Future Trends and Emerging Risks

Alternative Data

As advisers seek data edges, regulators are watching how non-traditional sources intersect with MNPI.

Crypto and Private Markets

With less transparency, private assets and digital tokens pose unique materiality and dissemination challenges. While private company disclosures, co‑investments and digital assets raise heightened MNPI/compliance risks, firms should first evaluate whether the asset is a security subject to applicable laws, whether there is a market in which the asset trades, and whether non‑public information may be ‘material’ to that market. Policies should consider these nuances rather than treat all digital‑asset exposures identically.

Cross-Border MNPI Rules

Advisers with global operations must account for different MNPI definitions and regulatory thresholds. In the U.K., under the FCA’s Market Abuse Regulation (MAR) regime, firms may have obligations around the handling of inside information, and advisers operating cross‑border must ensure compliance both with the SEC’s regime and any relevant foreign jurisdiction.

Conclusion

MNPI is not just a securities law concern—it’s a core compliance and fiduciary issue. Advisory firms that invest in the right controls, training, and surveillance now will be positioned to manage risk, serve clients better, and withstand scrutiny. In a world of increasingly fast, fragmented data, real-time oversight of MNPI is no longer optional—it’s imperative.

Quick Takeaways

  • MNPI is any non-public information that would influence a reasonable investor’s decision.
  • Advisers must design, implement, and test written procedures to prevent misuse of MNPI.
  • Policies must be updated for emerging risks: alternative data, digital assets, private exposures.
  • Access persons, expert networks, and communications are key control points.
  • Strong documentation and training are essential to defensibility.

FAQs

What is MNPI?

MNPI (Material Non-Public Information) is information that could affect a security’s price but hasn’t been disclosed to the public.

Who is considered an access person?

Access persons are employees with access to client portfolios or investment decisions—typically traders, PMs, and senior staff.

How often should MNPI policies be reviewed?

At least annually, and anytime your firm’s strategy, personnel, or vendor relationships change.

Can alternative data be MNPI?

Yes. If alternative data is both material and non-public, its use could trigger regulatory scrutiny.

What are common MNPI policy gaps?

Missing training logs, no restricted list, lack of documentation on MNPI incidents, and inconsistent surveillance.

 

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