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.
1. Decompose every big price move into EPS and multiple before reacting
The repeatable method
- Write the price as EPS × P/E. Over the move in question, pull both series (trailing or forward EPS, and the multiple).
- Attribute the change: how much came from earnings, how much from the multiple.
- If EPS is intact and the multiple did the work, the move is about sentiment — "the fundamentals didn't change. The narrative did."
- 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.
- 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.
Watch for
- A compressed multiple accompanied by falling forward estimates — that is the market pricing an EPS decline, and the decomposition should use forward EPS to catch it.
- Analyst price targets moving with the price (the Salesforce chart): targets are a lagging read of sentiment, not an independent input.
2. Classify the cause of a drawdown as temporary or permanent
The repeatable method
- List the stated causes of the fall.
- For each, ask whether it attacks the long-run demand for the product, or only its timing.
- Look for a structural floor under demand — regulation, necessity, contracts.
- Check the next reported quarters: if EPS keeps growing through the scare, the thesis was right and the multiple should follow.
- 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.
Watch for
- A "temporary" cause that lasts more than a few quarters — check the customers' funding data, not just the company's commentary.
- The discount disappearing after the recovery: this month's sheet puts Medpace only 5% below fair value.
3. Run several valuation screens and write up one name per screen, bear case first
The repeatable method
- Rank the rated universe three ways: forward P/E versus own five-year average, an earnings-growth expected-return model, and a reverse DCF.
- From each top ten, pick one name to examine.
- State the market's worry in one or two sentences.
- Answer it with a structural point (market structure, product role) and one datapoint (guidance, organic growth, buybacks).
- 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).
Watch for
- The FHFA decision on single or bi-merge credit reporting — a direct hit to bureau volumes if adopted.
- Names that appear on two or three of the top tens (Adobe, Gartner, lululemon, Paycom here) — the overlap is stronger evidence than any single rank.
4. Audit a published model month on month before trusting its rankings
The repeatable method
- Keep the previous issue's sheet and diff the same columns for the names you care about.
- 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.
- Check that the headline list is computed from the same figure as the prose.
- 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.
Watch for
- Next month's sheet: whether the reverse-DCF readings revert (a one-off data error) or persist (a methodology change nobody announced).
5. Treat the count of Buys as a market-level valuation gauge
The repeatable method
- Keep the quality universe fixed, so the number rated Buy moves only with price.
- Log the count every month.
- A rising count with unchanged business quality means multiples across the universe are compressing — a better time to add capital.
- 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).
Watch for
- A count that rises because the universe grows rather than because prices fall — the two must be separated.
Methods distilled from the archived Compounding Quality post (text and transcribed spreadsheets in transcript.txt) for personal study. Not investment advice.