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Actionable insights — Quality vs Momentum

Surviving a style drawdown on purpose: diagnosing whether underperformance is behavioural or fundamental, using a historical analogue honestly, and making the contribution schedule do the work.
2026-JUN-16 · Compounding Quality (Substack, free post) · Pieter Slegers / Team Compounding Quality · read ↗ · full analysis · transcript
How to read this page: no purchases are made in this issue, so every method here is about behaviour under a drawdown — the diagnostic that tells you whether to hold, the analogue that tells you what holding has historically been worth, and the mechanical schedule that removes the decision entirely. The last insight flags where the argument is weaker than it sounds. Written post, so no timestamps.

1. Diagnose an underperforming style before you change it

The repeatable method
  1. Separate the two possible causes of a drawdown: the businesses are doing worse, or other buyers are paying more for something else.
  2. Test the first directly — check revenue, earnings and cash flow of the holdings themselves, not the share prices.
  3. If the fundamentals are intact, the drawdown is a change in what the market will pay, i.e. a multiple, and multiples are the part of a return that mean-reverts.
  4. Convert the finding into one of exactly two actions: hold, or add. Selling belongs to the fundamentals branch of the diagnosis, not this one.
  5. Write down what would move you to the other branch, before the next fall.
Here: "Short-term underperformance is often more about investor behavior than business fundamentals," supported by the observation that good management "prefer waiting for the right opportunities instead of making average investments just to show growth." The archive runs the fundamentals check explicitly in the 18 June list ("has anything structurally changed? do the fundamentals remain strong?") and again in the 14 July letter with look-through cash flow.
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2. Use a historical analogue with the pain attached

The repeatable method
  1. Pick a precedent where the same style was declared dead, and name the dates.
  2. Report the drawdown as well as the recovery — the size of the loss endured is the part that makes the analogue useful.
  3. State the return from buying at the moment of maximum ridicule, not from the top or from the bottom.
  4. Then list the differences between then and now, so the analogy can be argued with.
Here: 1999. Buffett "refused to buy mediocre businesses at unreasonable prices," was publicly written off, and $10,000 invested at that point became "around $400,000 today. A 40-bagger (!)". The July letter completes the picture with the loss: Nasdaq +145% while Berkshire fell 44% between mid-1998 and early 2000, then +65% for Berkshire while the index halved from 2000-2002.
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3. Judge a defensive strategy on the recovery, not just the fall

The repeatable method
  1. For any strategy sold as defensive, measure both halves: how much less it falls, and how quickly it regains the prior high.
  2. Prefer the second measure. A smaller fall with no recovery is a slower loss; a fast recovery compounds from a higher base.
  3. Check across more than one episode — dotcom, 2008, 2020 behave differently.
  4. Demand the source of any recovery statistic before repeating it.
Here: "They fell less than the broader market. And they recovered faster," across the dotcom crash, the financial crisis and COVID — with the specific claim that "quality stocks recover 9x faster than other stocks." The source is given only as "an investor," which is exactly the sort of statistic to hold loosely.
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4. Let the contribution schedule replace the timing decision

The repeatable method
  1. Fix a monthly amount and a date, and make the purchase regardless of the market's level.
  2. Accept the trade explicitly: if prices rise you gain on what you hold; if they fall you buy the next tranche cheaper. Both branches are acceptable, which is what removes the decision.
  3. Run the arithmetic once, so you can see how much of the terminal figure comes from contributions rather than from the assumed rate of return.
  4. Direct each month's tranche by a rule (e.g. the worst performers of your own pre-vetted list) rather than by conviction on the day.
Here: "We add around $50,000 to our Portfolio every month. Currently, our positions are worth $1.5 million." The arithmetic offered: 12% a year for 66 years turns the existing book into $3.8bn; continuing the monthly additions turns it into $17.5bn. The gap between those two numbers is the contribution schedule, not the return.
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5. State the opposing case with its evidence, then answer it

The repeatable method
  1. Write the strongest version of the argument against your own positioning, including the data that supports it.
  2. Identify precisely which part you dispute — usually not the observation, but the inference drawn from it.
  3. Answer with a mechanism, not a preference: why does the observed gap close, and what closes it?
  4. Keep the record, so the answer can be scored later.
Here: the opposing case is granted in full — quality at all-time-low relative valuations, low-quality at lofty premiums, and momentum working — before the reply: "sooner or later, stock prices reconnect with business fundamentals." That is the mechanism, and it is the only one offered. It carries no timetable, which is both its honesty and its weakness.
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Methods distilled from the archived Compounding Quality post for personal study. Not investment advice.