MSCI Q3 and the ESG Licence Nobody Has to Buy

Europe's rule for ESG raters began to apply on July 2, and the common view, which MSCI's own chief executive has voiced, is that rules like that help the big incumbents. I think a rule only locks customers in when it binds the buyer, and this one binds only the seller. MSCI's first quarter under it, reported October 20, shows no sign of the rule pulling buyers in. Its ESG and climate business renewed less than a year earlier for the fourth quarter running, while its index business lifted retention to 97.1% from 95.8%.

For MSCI holders this is mostly good news. The ESG and climate segment is about a tenth of run rate, and the index, which is the moat, is getting stronger. The question is what the framework should count as regulatory lock-in, and MSCI happens to run both kinds of rule under one roof.

Growth tells the same story. Index organic subscription run-rate growth went from 9.3% in Q4 2025 to 11.7% in Q3, and Sustainability and Climate went from 4.9% to 2.4%, with net new recurring sales of minus $1.1M in the quarter. On the call management blamed one large client cutting its sustainability spending and said the pressure would last through Q4.

An MSCI index is named in a fund's prospectus and in pension mandates. To drop it, the fund files a change, tells its own investors, and accepts a period where it tracks its old benchmark badly. The cost of leaving sits with the customer, and that is the cost that keeps Index renewals near 97%.

The cost of this rule lands on MSCI. It has to be authorised and run its ratings to ESMA's standards, and so does every rival that wants to stay. A client that uses ratings internally and trims its sustainability budget faces no filing, no notice to investors and no tracking problem. It just doesn't renew.

InvestMoat rates each company's moat pillars as strong, intact, weakened or destroyed. The matrix shows regulatory lock-in next to the record and data pillars for five names that sell ratings, scores, benchmarks or market data.

FICO is the clearest case. Its lock-in was a buyer rule: lenders selling mortgages to Fannie Mae and Freddie Mac had to pull a FICO score. The FHFA has since let lenders use VantageScore, and on September 28 announced one pricing grid for both, so the framework moved the pillar to destroyed. What's interesting is that most lenders haven't left yet, which our FICO piece tracks. The rule created the habit, and the habit is outlasting the rule, at least so far.

The rating agencies went through the same thing earlier. The NRSRO label began in 1975 as a buyer rule, letting broker-dealers count highly rated bonds against their capital. After 2010 Dodd-Frank told US agencies to strip most rating references out of their rules (the SEC removed them from money-market fund rules in 2015), yet SPGI and MCO kept their share, and insurer capital rules and Europe's bank rules still lean on recognised ratings. ICE sits in the middle: CME, Cboe and Nasdaq hold the same exchange licences and no rule sends a trader to ICE, so the framework rates that pillar intact.

MSCI's ESG ratings and data never had the buyer rule that created those habits, and the EU licence doesn't add one. Its ESG indexes are a different matter: they sit in prospectuses and are booked in the Index segment. On the MSCI page I've taken the ESG ratings out of the regulatory lock-in and proprietary data notes in this update. Neither rating moved, because both already rested on the index.

The strongest objection comes from MSCI itself. On the Q4 2025 call the chief executive said MSCI was benefiting from a consolidation of ESG data and ratings suppliers in Europe, including a deal where a client dropped another provider for MSCI. The chief financial officer said Sustainability and Climate retention was higher in Europe than in the Americas, the reverse of the rest of the company, and the releases credited Europe with most of the segment's growth in Q4 2025, Q1 and Q2. Read that way, the licence is already thinning the field where it applies, and US cancellations are swamping it. I can't separate the two with the disclosed numbers, and I think that is a fair reading.

The second objection is timing. One quarter can't test a rule that hasn't been enforced. ESMA's September 10 list shows 34 small providers registered and no large provider, MSCI included, applications are due November 2, and the slide started in 2025, before the rule applied, when US asset managers pulled back from ESG under political pressure. The November 2 cut-off also has a buyer-side edge: a fund that quotes ratings in its marketing will only be able to use registered providers. That doesn't make anyone buy, but it can make small rivals unusable for those clients.

The third is that the index side isn't as clean as I've made it. Vanguard moved 22 funds off MSCI benchmarks in 2012 because the fee saving beat the paperwork, so prospectus lock-in has a price. And a strong market lifts index retention and fees together, which flatters the comparison this year.

I still hold the view, for a narrower reason than the opening might suggest. Consolidation in Europe helps the survivors win share of a budget, but nothing in the rule makes the budget exist. If the licence and the consolidation are pulling buyers in, segment retention should be back to about 93.5%, near its 2025 levels, by mid-2027, and the falsifiable claim is set at that line.

• Sustainability and Climate retention in Q4 2026 against 91.0% in Q4 2025, and net new recurring sales against management's guide of roughly flat to slightly positive.
• Whether ESMA authorises MSCI Solutions (Deutschland), and how many large raters are still on its register after November 2.
• Any EU rule that requires a fund or bank to use an authorised rating. That would add the buyer half, and I would expect the retention line to turn.