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Actionable insights — Buy-Hold-Sell List: September 2026

Splitting a price move into its earnings half and its multiple half, diagnosing whether a drawdown is temporary, one spotlight per valuation screen, and checking a rated sheet month-on-month for model drift.
2026-SEP-17 · Compounding Quality (Substack, paid post) · Pieter Slegers / Team Compounding Quality · read ↗ · full analysis · transcript
How to read this page: not what was rated Buy, but the methods in this issue that can be rerun on any name — the EPS × multiple decomposition from the opening essay, the temporary-versus-permanent drawdown test, the one-spotlight-per-screen format, and a reader's check for drift in a published valuation model. Written post, so no timestamps.

1. Decompose every big price move into EPS and multiple before reacting

The repeatable method
  1. Write the price as EPS × P/E. Over the move in question, pull both series (trailing or forward EPS, and the multiple).
  2. Attribute the change: how much came from earnings, how much from the multiple.
  3. If EPS is intact and the multiple did the work, the move is about sentiment — "the fundamentals didn't change. The narrative did."
  4. Put the current multiple against its own ten-year range, not just its average: a range of 31×–89× tells you how far sentiment alone can carry the price in either direction.
  5. Only then decide whether the drop is an opportunity (multiple compressed, EPS intact) or a warning (EPS falling).
Here: ROL grew EPS ~12% a year yet went 60× → 31× in one year, "a 50% valuation drop." NOW, CRM, WDAY and ACN fell 33–50% in the 2026 AI panic and rebounded 31–57% off the lows in ~90 days with no change in earnings.
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2. Classify the cause of a drawdown as temporary or permanent

The repeatable method
  1. List the stated causes of the fall.
  2. For each, ask whether it attacks the long-run demand for the product, or only its timing.
  3. Look for a structural floor under demand — regulation, necessity, contracts.
  4. Check the next reported quarters: if EPS keeps growing through the scare, the thesis was right and the multiple should follow.
  5. Resist both reflexes the post names — buying every dip, and assuming the market knows something you don't.
Here: MEDP fell from ~$450 to below $300 in April 2025 on higher rates, few IPOs, VC flowing to AI and policy uncertainty — all funding-timing issues for its biotech clients. The floor: "Companies will always need to develop new drugs… FDA rules require them to go through extensive testing." EPS kept growing; the stock is near $600, +140% since October 2023.
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3. Run several valuation screens and write up one name per screen, bear case first

The repeatable method
  1. Rank the rated universe three ways: forward P/E versus own five-year average, an earnings-growth expected-return model, and a reverse DCF.
  2. From each top ten, pick one name to examine.
  3. State the market's worry in one or two sentences.
  4. Answer it with a structural point (market structure, product role) and one datapoint (guidance, organic growth, buybacks).
  5. Name the external catalyst that could prove the worry right, so it can be monitored.
Here: Forward P/E → IT (11.3× vs 33×; worry: IT budgets and AI; answer: advisor on AI choices, higher FCF into buybacks). Earnings Growth → TRU (19.3%; worry: credit cycle and FHFA single-report review; answer: three-bureau oligopoly, raised guidance). Reverse DCF → THEP.PA (priced for 2.4% FCF growth; worry: European construction; answer: organic growth back, FCF growth expected from 2027).
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4. Audit a published model month on month before trusting its rankings

The repeatable method
  1. Keep the previous issue's sheet and diff the same columns for the names you care about.
  2. Flag any input that moves far more than the price did — a reverse-DCF requirement jumping from single digits to 70–90% on a small price change points to a changed input or formula, not to the business.
  3. Check that the headline list is computed from the same figure as the prose.
  4. Reconcile counts: the number of Buys claimed, the rows shown, and the holdings list.
Here: the Reverse-DCF leader THEP.PA is ranked on a −165.5% requirement from the Buy sheet while the prose and list say 2.4%. EVO.ST (1.5% → 74.6%), BRO (5.1% → 42.1%) and BN (8.3% → 90.6%) all jump since August. "57 on Buy" against 56 rows shown, with ZTS and HGT.L missing; 20 holdings against 21 last month, with Novo Nordisk gone unannounced.
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5. Treat the count of Buys as a market-level valuation gauge

The repeatable method
  1. Keep the quality universe fixed, so the number rated Buy moves only with price.
  2. Log the count every month.
  3. A rising count with unchanged business quality means multiples across the universe are compressing — a better time to add capital.
  4. A falling count means the opposite: raise the bar for new buys and let cash build.
Here: "Currently there are 57 stocks on 'Buy'. This number has never been higher" — up from 55 in August and 49 in May, with only one addition to the universe this month (ISRG, not rated Buy).
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Methods distilled from the archived Compounding Quality post (text and transcribed spreadsheets in transcript.txt) for personal study. Not investment advice.