Three of the world’s largest financial regulators have arrived at the same enforcement target — the compensated endorsement — by three incompatible routes. The United States polices it after publication under the SEC Marketing Rule, the United Kingdom gates it before publication through the section 21 approver regime, and the European Union governs it through fund-marketing content standards. For any firm distributing across all three, the binding constraint is now the strictest of the three, not the local one.

The convergence became explicit on April 20, 2026, when 17 regulators launched a coordinated week of action against illegal online investment promotions. Four days later the Financial Conduct Authority (FCA) reported the UK results alone: 1,267 illegal financial adverts identified, reaching a minimum of 2,338,372 UK accounts, with 66% traced to firms or individuals already on the FCA Warning List. The SEC had set up the American half of this three months earlier, in a Risk Alert dated December 16, 2025 that singled out testimonials, endorsements and third-party ratings.

Key facts:

• SEC Marketing Rule: Rule 206(4)-1 under the Investment Advisers Act of 1940; compliance date November 4, 2022 — a stated examination priority for four consecutive years
• SEC Risk Alert: December 16, 2025, covering the Testimonials and Endorsements Provisions and the Third-Party Ratings Provisions
• UK section 21 gateway: live February 7, 2024 under Policy Statement PS23/13 — an authorised firm may not approve a promotion for an unauthorised person without specific FCA permission
• EU marketing communications: ESMA Guidelines under the Cross-Border Distribution of Funds Regulation, applicable since February 2, 2022
• Coordinated action: 17 regulators, week commencing April 20, 2026; UK output included 120 platform takedown requests and 34 new warning alerts
• Enforcement trajectory: finfluencer enforcement cases rose from one in 2023 to 74 in 2025
• Largest grouped US Marketing Rule action: nine registered investment advisers, September 2023, $850,000 in combined penalties ranging from $50,000 to $175,000

Methodology and sources

This analysis draws on primary regulator documents: the SEC Division of Examinations Risk Alert of December 16, 2025; FCA Policy Statement PS23/13 establishing the financial promotions gateway; the ESMA Guidelines on marketing communications issued under the Cross-Border Distribution of Funds Regulation; and the FCA press release of April 24, 2026 reporting the coordinated week of action. Secondary sources are named law-firm client alerts. The jurisdictional scope is the United States, United Kingdom and European Union, with Singapore included in the comparison table for contrast. The time window runs from the Marketing Rule compliance date of November 4, 2022 to July 2026. One caveat applies throughout: the SEC Marketing Rule binds registered investment advisers, while the FCA and ESMA regimes reach a broader population including brokers and fund distributors, so the regimes are not perfectly commensurable and the table below compares function rather than identical entity scope.

What the December 2025 Risk Alert actually found

The SEC Marketing Rule is a disclosure-and-substantiation regime that operates after the fact. It does not require pre-approval of an advertisement. It requires that when an adviser publishes a testimonial or endorsement, specified disclosures travel with it, and that the adviser can substantiate any material statement of fact on demand.

The December 2025 Risk Alert found that population failing on prominence rather than on presence. Examiners repeatedly encountered advisers who had made the required disclosures — whether the endorser was a current client, whether they were compensated, whether a material conflict existed — but had placed them in captions, hashtags, hyperlinks or separate pages rather than alongside the endorsement itself. The rule’s standard is “clear and prominent”; a disclosure that requires a click is neither. Examiners also found compensated promoter arrangements running without the written agreements the rule requires, insufficient due diligence on third-party rating methodologies, and policies adopted centrally but implemented inconsistently across platforms.

That last finding is the structural one. It describes a compliance failure that is invisible in a policy review and visible only in a platform-by-platform inspection, which is precisely the shift the 2026 examination cycle has signalled.

“The SEC is making clear that policy manuals are not enough — actual practices must match the Marketing Rule’s requirements.”

— Edmund P. Daley, Pete S. Michaels and Molly Connolly, Mintz, February 25, 2026

The UK took the opposite route: gatekeeping before publication

Where the SEC polices content after it appears, the FCA restricts who may authorise it appearing at all. Section 21 of the Financial Services and Markets Act 2000 prohibits an unauthorised person from communicating a financial promotion unless an authorised firm approves it. Until February 2024 any authorised firm could perform that approval as an incident of its permissions.

Policy Statement PS23/13 ended that. Since February 7, 2024, an authorised firm may not approve a promotion for an unauthorised person unless it has applied for and been granted specific FCA permission to act as a section 21 approver. The reform followed a review that identified concentrated harm in speculative bonds, mini-bonds and alternative finance, where authorised firms had approved promotions for high-risk issuers without adequate due diligence or ongoing monitoring.

The effect has been to compress the approver population into a smaller, more specialised set of firms carrying heightened responsibility — and to relocate liability. Under the SEC model, the adviser who published the advertisement answers for it. Under the UK model, the approving firm answers for a promotion it did not write, for a product it does not issue, on a platform it does not control. That is a materially different risk to underwrite, and it is why approver permissions have become a scarce and priced service rather than an administrative courtesy.

How three regimes compare

Jurisdiction / Regulator	Effective date	Scope	Key requirement	Penalty / sanction
US (SEC)	November 4, 2022	SEC-registered investment advisers	Rule 206(4)-1: clear and prominent disclosure of client status, compensation and conflicts; written agreements with compensated promoters; substantiation of material facts	Civil money penalties — $50,000 to $175,000 per firm in the September 2023 grouped action
UK (FCA)	February 7, 2024	Authorised firms approving promotions for unauthorised persons	PS23/13: specific s.21 approver permission required before approval; ongoing monitoring of approved promotions	Permission cancellation, Final Notice penalties, criminal prosecution for unauthorised communication
EU (ESMA / national competent authorities)	February 2, 2022	UCITS management companies and AIFMs marketing cross-border	Marketing communications must be identifiable as such and present risks and rewards with equal prominence	National CA sanctions; marketing suspension in the host member state
Singapore (MAS)	Ongoing under FAA advertising provisions	Licensed financial advisers and capital-markets services holders	Representations must not be false or misleading; prominence requirements for risk warnings	Composition fines, licence conditions, prohibition orders

Sources: SEC Division of Examinations Risk Alert, December 16, 2025; FCA PS23/13; ESMA Guidelines on marketing communications; MAS Financial Advisers Act advertising provisions. Last updated: July 26, 2026.

Why the coordinated week of action changes the calculus

Multi-regulator statements are common and usually inconsequential. This one is different in a specific way: it produced simultaneous operational output rather than a joint communiqué. Seventeen regulators acted inside the same week, and the UK component alone generated 34 warning alerts, 14 updated warnings, four targeted letters to suspected unauthorised promoters, 120 takedown requests to social media platforms, criminal proceedings against two individuals and a guilty plea from Aaron Chalmers over illegal social media promotions.

“This collective push with international partners is vital in helping to protect millions of consumers from harm. We will only make real progress in the fight against financial crime if every part of the system plays its role – including social media firms.”

— Steve Smart, Executive Director of Enforcement and Market Oversight, FCA, April 24, 2026

The closing clause is the policy signal. Naming social media firms as part of the system implies a distribution-layer obligation that none of the three regimes currently imposes directly. Platforms are not authorised persons under FSMA, not investment advisers under the Advisers Act, and not fund management companies under the CBDF Regulation. They sit outside all three perimeters while carrying most of the traffic — 2,338,372 UK accounts reached by adverts the FCA classified as illegal, two-thirds of them from entities already publicly flagged.

That gap is the honest weakness in the convergence story. Three regulators tightening three different regimes does not reach the intermediary, and the enforcement statistics suggest the intermediary is where the volume sits.

What this means for brokers, CASPs and fund managers

The operational consequences differ by function, and the cross-border case is the hard one.

For SEC-registered advisers, the December 2025 Risk Alert converts prominence into an examinable artefact. The relevant evidence is no longer the marketing policy but screenshots of every live placement, per platform, showing the disclosure adjacent to the endorsement. Written agreements with every compensated promoter — including affiliates and referral partners who may not think of themselves as promoters — are a documentary requirement, not a best practice.

For UK-facing distributors, the question is whether an approver relationship exists at all. Firms that relied on a general approval from an authorised counterparty before February 2024 may have no valid approval today if that counterparty never obtained gateway permission. This is a live legacy exposure rather than a forward-looking one.

For EU fund distributors, the equal-prominence standard for risks and rewards is the provision that most often fails on mobile. A layout that presents performance above the fold and risk disclosure below it can satisfy a desktop review and breach the guideline on a phone, where the guidelines expressly require the online context to be taken into account. ESMA has shown in adjacent files that it reads existing measures broadly rather than waiting for new ones, as when it held that the EU binary-options ban already covers event contracts.

For firms operating in all three, the practical answer is that the strictest requirement becomes the operating standard, because a single global social feed cannot be geofenced reliably enough to run three compliance postures. The strictest element of each — US written promoter agreements, UK pre-approval permission, EU equal prominence — combines into a standard none of the three regulators individually imposes.

Enforcement context

The most instructive US action remains the September 2023 grouped settlement, in which the SEC found that nine registered investment advisers had advertised hypothetical performance on their public websites without the policies and procedures the rule requires. The firms settled for $850,000 in combined penalties, ranging from $50,000 to $175,000 each.

The instructive feature is not the amount but the theory. None of the nine was charged with publishing false performance figures. They were charged with publishing hypothetical performance to an audience for whom it was not relevant, without the procedures the rule mandates. The violation was procedural and the exposure was strict — the same shape as the prominence findings in the December 2025 Risk Alert, and a reminder that under this regime accuracy is not a defence to a disclosure failure.

Subsequent individual actions extended the pattern: a November 2024 settlement of $250,000 involving paid endorsements from professional athletes lacking required disclosures, and a December 2024 settlement of $175,000 covering unsubstantiated performance claims and hypothetical performance advertised without required policies. All settled without admissions, a convention now under active revision after the CFTC rescinded its no-deny settlement policy.

The forward view

Three things are pending or contested.

First, the SEC staff published new Marketing Rule FAQs in January 2026 that materially affect performance-presentation compliance. FAQ guidance is not rulemaking and can be withdrawn, which leaves advisers relying on staff positions that carry no formal legal force — a recurring structural complaint about this rule since 2022.

Second, the platform question is unresolved. The FCA has named social media firms as owing a role; no jurisdiction has yet legislated one. Any move here would be the single largest change to the promotions perimeter since the gateway, and it would arrive through a different statute than the three regimes discussed above.

Third, divergence is deliberate on the UK side. The FCA has already declined to copy MiCA in finalising its crypto framework, and the same instinct applies to promotions: the gateway is a structurally British answer that neither Washington nor Brussels has adopted. Firms should not expect the three regimes to harmonise into one standard. The convergence is on the target, not the method — and while the SEC advances its own rulemaking agenda, the enforcement asymmetry between pre-approval and post-publication policing will persist.

TL;DR: The SEC, FCA and ESMA now police the same conduct — the compensated endorsement — through three incompatible mechanisms. The SEC’s December 16, 2025 Risk Alert found advisers failing on disclosure prominence rather than disclosure presence, with required text buried in captions, hashtags and hyperlinks. The FCA instead gates approval itself: since February 7, 2024 only firms holding specific section 21 permission may approve promotions for unauthorised persons. ESMA requires risks and rewards to be presented with equal prominence. On April 20, 2026, 17 regulators acted in a coordinated week that identified 1,267 illegal UK adverts reaching more than 2.3 million accounts. Firms distributing across all three jurisdictions face the strictest combination, not the local rule — and none of the three regimes reaches the platforms carrying the traffic.

Frequently asked questions

Does the SEC Marketing Rule require pre-approval of advertisements?

No. Rule 206(4)-1 is a post-publication regime. It requires that specified disclosures accompany testimonials and endorsements, that compensated promoters be covered by written agreements, and that material statements of fact be substantiable on demand. There is no filing or approval step before publication, which is the principal structural difference from the UK regime.

What does “clear and prominent” mean in practice?

The December 2025 Risk Alert indicates it means adjacent and simultaneous. Examiners found deficiencies where disclosures existed but sat in captions, hashtags, hyperlinks or on separate pages. A disclosure the viewer must click to reach, or scroll to find, has repeatedly been treated as failing the standard regardless of its accuracy or completeness.

Who needs section 21 approver permission in the UK?

Any authorised firm that wishes to approve a financial promotion communicated by an unauthorised person. Since February 7, 2024 this requires a specific permission applied for and granted by the FCA under PS23/13; it is no longer incidental to a firm’s existing authorisation. Firms relying on pre-2024 approvals should verify the approver holds current gateway permission.

How does the EU regime differ from both?

The ESMA Guidelines under the Cross-Border Distribution of Funds Regulation, applicable since February 2, 2022, regulate content rather than approver identity or post-publication disclosure. Marketing communications must be identifiable as marketing, must be fair, clear and not misleading, and must present risks and rewards with equal prominence, expressly taking online presentation into account.

Are social media platforms liable under any of these regimes?

Not directly. Platforms are not authorised persons under FSMA, not registered investment advisers under the Advisers Act, and not management companies under the CBDF Regulation. The FCA has publicly stated that platforms must play a role, and issued 120 takedown requests during the April 2026 week of action, but takedown cooperation is voluntary rather than a statutory obligation.

What is the most common enforcement theory to date?

Procedural failure rather than false statement. In the September 2023 grouped action, nine advisers paid $850,000 collectively for advertising hypothetical performance without required policies and procedures — not for publishing inaccurate figures. Accuracy is not a defence to a disclosure or procedural breach under this rule.

Does compliance in one jurisdiction satisfy the others?

No, and the gaps run in both directions. A US-compliant endorsement with prominent disclosure may still lack a valid UK approver. A UK-approved promotion may fail the EU equal-prominence test on mobile. Firms running a single global social presence generally converge on the strictest combined standard rather than attempting to geofence three postures.

This article is informational analysis only and does not constitute legal, regulatory, tax, or investment advice. Regulatory frameworks change frequently and interpretation depends on facts and circumstances; primary documents and official regulator guidance always supersede summaries. Firms should consult qualified legal counsel and their relevant supervisory authority before taking any action based on the analysis above.