FINRA Launched a Sweep on Worst-Of Structured Notes in May. Here's What Every Broker-Dealer Needs to Check Before the Letter Arrives.

TL;DR

• FINRA announced a targeted sweep of non-principal-protected “worst-of” structured notes on May 19, 2026, covering January 1, 2022 through December 31, 2025.
• The sweep tests Reg BI compliance: whether firms have adequate supervision, concentration controls, alert logic, training, and conflict of interest disclosures for these products.
• Even firms that didn’t receive a sweep letter should treat this as a self-assessment trigger — these are exactly the questions FINRA will ask in the next routine exam.
• The compliance gap at most firms: written supervisory procedures that define structured products by risk tier, with enforceable concentration limits tied to individual customer profiles.

In the five years since Reg BI took effect, FINRA has tracked how broker-dealers apply it to complex products. For plain-vanilla equity and mutual fund recommendations, supervision is generally in place — firms built WSPs, ran training, updated suitability matrices. For structured products, especially the more complex structures involving worst-of payoffs, the picture is less consistent.

FINRA launched a targeted sweep on May 19, 2026, to find out exactly where the gaps are.

What’s a Worst-Of Structured Note?

Before getting into the compliance obligations, be precise about the product at issue.

A worst-of structured note is a principal-at-risk structured product where the payout at maturity — both interest payments and the return of principal — depends on the performance of the worst-performing asset among two or more reference assets (equities, indices, ETFs, or sometimes currencies or commodities).

The pitch is usually attractive: higher coupon rates than comparable principal-protected notes, diversification across multiple underlying assets. The risk: if any single reference asset falls sharply, the investor absorbs the full loss from that worst performer — regardless of how well the others did. A basket of three equity indices where two gain 12% and one drops 35% produces a loss calculated on the 35% decline.

That asymmetric loss profile — amplified downside, capped upside — is what makes concentration in these products particularly dangerous. A customer with 30% of their liquid assets in worst-of structured notes isn’t just concentrated in one sector. They’re concentrated in a payout structure that selects for bad outcomes.

Why FINRA Launched the Sweep Now

The sweep letter covers January 2022 through December 2025 — a four-year window that spans the full interest rate cycle. Worst-of notes sold well in 2022 and early 2023, when investors were chasing yield in an environment where traditional fixed income was still recovering from duration losses. Products pitched as yield-enhancement vehicles with “diversification” across multiple underlyings moved quickly into retail portfolios.

Some of those products have now matured — at a loss. FINRA’s timing suggests the sweep is at least partly driven by maturity-date arbitration filings and customer complaints about products whose risk profiles weren’t adequately explained or supervised.

The sweep is also a formal declaration, not a quiet routine inquiry. FINRA has made formal sweeps relatively rare — this is only the second time FINRA has announced a targeted sweep in the past three years. A formal sweep signals that any findings will inform future rulemaking, regulatory guidance, or coordinated enforcement across the industry. Firms that don’t receive a letter today should expect their next routine exam to ask every question on this checklist.

The Reg BI Obligations FINRA Is Testing

The sweep letter identifies two specific Reg BI obligations as the focus of the review.

The Care Obligation

Rule 15l-1(a)(2)(ii) requires broker-dealers to exercise reasonable diligence, care, and skill in making recommendations. It has two components:

Reasonable basis. Does the firm have a reasonable basis to believe the product is appropriate for at least some customers? For worst-of structured notes, this means understanding the full risk profile of the specific structures being recommended — not just “structured products” as a category.

Customer-specific suitability. Does the firm have a reasonable basis to believe this specific product is in the best interest of this specific customer, considering their investment profile? For worst-of notes, this means evaluating concentration — both within structured products specifically and within the customer’s overall portfolio.

FINRA is looking for evidence that these determinations were actually made, not just that the firm had a general policy. The sweep asks specifically how the firm monitors customer concentrations and what controls exist to catch problematic concentration before a recommendation is made.

The Conflict of Interest Obligation

Rule 15l-1(a)(2)(iv) requires identifying and disclosing conflicts, and mitigating or eliminating those that can’t be fully disclosed. For structured notes, the primary conflict FINRA is examining is compensation.

Broker-dealers typically earn higher embedded fees on structured products than on comparable plain-vanilla alternatives. The firm earns that compensation regardless of whether the product performs well for the customer. FINRA wants to see:

• How the firm identified this compensation structure as a conflict
• What disclosures were made to customers at or before the time of recommendation
• What controls prevent compensation from influencing recommendations in ways that harm customer outcomes

What the Sweep Letter Actually Asks For

Based on the public sweep letter and law firm analyses, here’s what targeted firms are being asked to produce:

Even if your firm didn’t receive a letter, this is the self-assessment checklist your compliance team should run against right now.

The Self-Assessment Your Compliance Team Should Run

Step 1: Inventory Your Structured Product Sales

Pull a complete inventory of worst-of structured note sales from January 2022 to present: product, customer, notional amount, portfolio concentration at the time of sale, and current concentration for still-open positions.

The sweep covers 2022–2025, but your current exposure matters too. If concentration levels that were borderline at sale have grown over subsequent purchases, that’s a remediation issue regardless of when the sweep looks.

Step 2: Audit Your Written Supervisory Procedures

Your WSPs should specifically define:

• What constitutes a “worst-of” or “high-risk” structured note for supervision purposes — not just a reference to “structured products” in general
• Concentration limits by product type, customer account, and portfolio
• Approval requirements for recommendations that approach or exceed those limits
• How concentration alerts are configured, monitored, and escalated
• The minimum training required before a rep is permitted to recommend these products

Generic WSPs are the most common gap FINRA finds in complex product supervision. If your procedures describe the process for a plain-vanilla equity recommendation and say reps “should apply similar principles” to structured products, that’s not going to satisfy the sweep.

Step 3: Check Your Alert Logic

If your surveillance system doesn’t have a specific concentration trigger for worst-of notes — separate from general equity concentration alerts — that’s a gap. The distinction matters: a customer could have 15% of their portfolio in broad equity positions (reasonable) and 15% in worst-of structured notes (potentially problematic) that both show up as equity exposure in a blunt system.

FINRA is asking how your firm differentiates concentration in these specific structures from general equity concentration. If your answer is “we don’t,” that’s the answer they’re looking for.

Step 4: Pull Training Records

For every registered representative who sold worst-of structured notes during the review period, confirm that a training record exists predating their first sale. “We trained them at onboarding” isn’t the same as “we trained them on worst-of structured note features, risks, and concentration thresholds before they were authorized to recommend this product.”

The distinction matters in arbitration, too. If a customer complaint surfaces, the first question is: what was this rep authorized to recommend, and what did the firm verify before granting that authorization?

Step 5: Reconstruct Compensation Disclosures

For a sample of transactions, pull the disclosures provided to customers at or before the time of recommendation. Confirm that the disclosure accurately described the firm’s compensation structure — including any embedded fees or enhanced compensation relative to comparable alternatives.

If your firm earns 3% embedded on a worst-of note and 0.5% on a comparable fixed-income alternative, customers need to know that differential exists, and your conflict of interest controls need to explain how the firm ensured it didn’t influence the recommendation.

How This Connects to the Broader Reg BI Enforcement Pattern

For context, FINRA’s 2026 Regulatory Oversight Report — published in December 2025 — specifically flagged complex products as an examination priority. The structured notes sweep is the operational follow-through on that priority. FINRA’s 2026 exam priorities covered supervision, CAT reporting, and cybersecurity as top-line themes, but complex product sales practices were embedded throughout the discussion of Reg BI compliance.

The sweep also connects to a broader theme FINRA has been building: individual accountability for compliance failures. The CCO personal liability cases from 2026 show that inadequate supervision programs don’t just create firm-level liability — they create individual exposure for the compliance officers and supervisors who were responsible for building and maintaining those programs.

And if the sweep generates formal enforcement actions — which formal sweeps typically do — the findings will surface in examinations at every firm that sells these products, whether or not they were in the initial sweep cohort. Having a documented issues management and remediation process in place before an examination starts is always better than trying to reconstruct one in response to exam findings.

So What? The Exam Preparation Signal

FINRA formal sweeps are not quiet inquiries. They’re public announcements followed by industry-wide guidance, and eventually by enforcement actions at firms with the most significant gaps. The structured notes sweep follows the same pattern as the 2022 complex product sweeps — which generated both targeted enforcement and industry-wide Notice to Members guidance within 18 months.

Even if your firm doesn’t sell worst-of structured notes specifically, the underlying examination logic applies to any complex product with non-obvious loss profiles: leveraged ETFs, reverse convertibles, principal-at-risk notes with single reference assets, structured annuities with worst-of features in sub-accounts.

The practical action right now: run the self-assessment above, document what you find, assign owners to any gaps, and build a remediation timeline. Compliance teams that find these gaps themselves and remediate proactively are in a fundamentally different position than those that find them for the first time during an examination.

For tracking self-identified compliance gaps through to validated closure — including regulatory exam findings, self-assessments, and internal audit results — the Issues Management Tracker & Template is built for exactly this use case.

The FINRA sweep letter is publicly available on FINRA’s website. Law firm analyses from Eversheds-Sutherland via JD Supra, National Law Review, ThinkAdvisor, and Mintz provide additional detail. This post is for informational purposes and does not constitute legal advice.