Concept

Compounding

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Compounding

Compounding is the principle that durable value in a software business comes from things that recur and grow on top of each other over time — relationships, infrastructure, capability — and that any move which raises a number today at the expense of that recurrence is a permanent cost, not a trade. The wiki treats it as one concept seen from two angles: Jason M Lemkin‘s claim that compounding is the only thing that matters in B2B, and Jeff Weinstein‘s “long-term compounding” half of his go-go-go-plus-compounding philosophy of building.

Lemkin: anti-compounding is a permanent cost

For Lemkin, billion-ARR companies (Cloudflare and others) exist only because revenue compounds — customers stay and expand. He cites Matt Mullenweg saying the thing he most underestimated over 20 years at Automattic was the power of compounding. The corollary is the operative one: anti-compounding moves buy short-term revenue at a lasting cost to the relationship that produces recurrence. His examples, mostly from the 2023 downturn:

  • dark patterns (forced checkout upsells of things the customer never wanted);
  • unearned price increases — everyone raised prices, almost no one added the value that historically justified it (“they just sent an email”); earn your price increase;
  • forced annual contracts on SMB buyers who want to pay monthly;
  • weaponised customer success — reoriented from retention to revenue, which “destroyed relationships” across the industry (a beloved vendor demanded $50K upfront from a $299/month customer or shut-off that week, then walked it back).

For a low-end / PLG product the master metric is therefore churn, not conversion — 3–4%/month SMB churn is “almost unsolvable,” so relentless churn reduction is where the energy belongs. This is also why he defends the free base (see VP of Free): over-monetising the long tail anti-compounds the community that produces converters.

Weinstein: compounding as the patient half of building

Weinstein pairs go-go-go ASAP (optimistic urgency — “can we turn tomorrow into today?”) with a long-term compounding instinct he had to learn: some goals need layers of infrastructure — the iceberg under the visible tip — and the move is to invest where “we will never regret spending time” (latency, reliability) and let capability compound. The formative case: Stripe’s payment-method count stayed flat for years under pure hustle; stepping back to build internal platforms (going slower) flipped the curve from ~10 to 100+. Compounding also shows up as relationship and reputation: a maturing product rots through entropy and silently “decreases all the trust you’ve earned,” and turning an angry customer into a promoter compounds advocacy. Atlas’s “only do what we can automate, and commit to do it forever” stance is a compounding bet — the AngelList hand-off (a competitor sending its incorporation traffic to Atlas) was the payoff of patiently building the durable version.

The shared shape

Both speakers treat compounding as the reason to prefer the slower, customer-honest path over the spreadsheet-friendly one:

  • the value that compounds is recurrence — a customer who stays, an integration that never breaks, a relationship that produces referrals;
  • the danger is local optimisation — a price hike, a dark pattern, a quarter’s bookings — that reads as progress while eroding the base;
  • the discipline is a long time horizon: optimise the balance over years, not the metric this quarter.

Housel: survival as the prerequisite for compounding

Morgan Housel approaches compounding from personal finance rather than SaaS. His formulation: “If you have to sum up doing well financially in one word, I think it’s survival.” The compound curve is back-loaded — 99% of Warren Buffett’s net worth was accumulated after his 65th birthday, because that is simply how exponential growth works mathematically. The implication: the investor’s job for the first decades is not to maximise returns but to avoid being forced out.

Two forced-exit failure modes:

  1. Voluntary exit (panic-selling): people who have intellectually endorsed “buy when others are fearful” find, in a real crisis with schools closed and jobs disappearing, that they cannot hold. They exit near the bottom.
  2. Forced exit (structural): overleveraging, debt obligations that cannot be serviced when income is interrupted.

The edge of the rare investor who compounds over decades is not superior stock-picking but superior endurance — the ability to sit on their hands when the world appears to be ending. This framing converges with Joel Greenblatt‘s observation that “if you don’t know how to value a business, you’re going to react to the emotions” and Howard Marks‘s central theme that the emotional volatility of the market is the source of its return premium for those who can bear it.

Dimon: the fortress as the structural implementation

Jamie Dimon applies the same logic at the institutional level in banking. JP Morgan was “a little bit” less profitable than peers from 2000 to 2007 because the Fortress Balance Sheet — excess capital, genuine liquidity, no hidden leverage — cost returns in the good years. Most of the banks earning 30% ROE through leverage did not survive 2008. The ones that did not survive reset their compound return to zero.

The fortress also creates what Housel calls a positive asymmetry in crises: Bear Stearns, Washington Mutual, and First Republic were all available at deep discounts because JP Morgan had the capital to act when no one else did. The conservative position in good years is the offensive weapon in bad ones. This is compounding in its starkest form: you cannot compound across a crisis you do not survive, and surviving a crisis with surplus capital positions you to compound far ahead of those who merely survived.

Miller: future value as the correct unit for compounders

Bill Miller adds the measurement problem: if compounding is real, intrinsic value today is the wrong unit to price against. “100% of the information you have to use to value a business is based on the past, but 100% of the value depends on the future.” Amazon looked expensive on every present-value metric from 1997 to 2010; it was cheap relative to what it would compound to.

Miller’s Amazon history is the worked example: bought at IPO, re-entered at $88 in 1998, averaged down to single digits in 2002, held 40–50% of personal portfolio in 2022. At every entry point, a screen on present earnings or book value would have excluded it. The compound return is only visible to an investor willing to estimate future value rather than anchor on current metrics — which requires tolerating Knightian Uncertainty about the distribution of outcomes.

The 4% principle (from James Anderson / Bailey Gifford): all S&P 500 long-run returns accrue to roughly 4% of publicly traded companies. A diversified portfolio virtually guarantees catching some of the 96%. The optimal strategy is concentration in the 4% — which requires identifying them early, often before the market has resolved the uncertainty. This is compounding as a selection problem, not a holding problem.

Shayegh: surrender as the condition for compounding

Nima Shayegh applies the compounding logic at the level of investment structure: the number of compounding years, not annual returns, carries most of the freight. “Longevity carries most of the freight here.” Any behaviour that shortens your runway — reactive trading, macro-timing, choosing LPs who will redeem in drawdowns — destroys compounding even if it looks prudent quarter to quarter.

His formulation of surrender: stay fully invested, own businesses whose economics are resilient to macro changes, and stop engaging with the question of when a crash will come. Surrender is not passivity — it is the structural choice that keeps the compounding clock running.

The Munger principle Shayegh cites: “The longer you hold something, the closer you will get to the intrinsic reinvestment return of the business.” This is the compounding argument for holding, not just buying: the business’s reinvestment rate, not your trading skill, ultimately dominates the compound return. Selection for long duration reinvestment runways — businesses that can reinvest capital at high returns for decades — is the equivalent of selecting a high-rate instrument for the long end of a compound curve.

Structural implementation at Rumi Capital: fewer than ten holdings, zero redemptions in six-plus years, fee structure that aligns manager with LP (incentive allocation above 5% cumulative hurdle), LP base selected for long time horizons. “If you intend to have a long-term investment journey and you have surrendered to a lot of this volatility, if you’re constantly sprinting and you’re always wired and you’re reactive to every little data point, you’re staring at ticks on a screen — over the long term, it will completely destroy your physical and mental health, it will strain your relationships, and ironically it will make the investment decisions worse.”

See Nima Shayegh on Roots and Branches, Lou Simpson, and Surrendering to Uncertainty and Roots and Branches.

Stulberg: compounding as the secret to mastery

Brad Stulberg makes the compounding analogy explicit in the context of skill development: “If you want to generate wealth and you want to go from $1 million to $10 million, you can make one enormous bet and hope for the best or you could make a bunch of small investments over time and have those small smart investments compound. The same law applies to making progress in anything.”

The key mechanism is raising the floor — what you do on bad days. Great days are largely unengineerable; anyone can perform well when conditions are perfect. The compounding edge is in not letting bad days spiral. In portfolio terms: the fund that minimises losses in rough markets performs comparably to the fund that crushes good markets. In mastery terms: the practitioner who shows up on bad days — doing the minimum rather than zero — builds a durable foundation that intermittently-motivated rivals never accumulate.

A decade of consistent practice, not heroic sprints, is what produces genuine mastery. “Consistency and patience — that is the secret.” See Brad Stulberg on the Way of Excellence, Involved Engagement, and Compounding Consistency and Involved Engagement.

Hagstrom: focus investing as the structural implementation

Robert Hagstrom makes the connection between compounding and concentrated holding explicit through Bessembinder’s data. All net long-run equity returns above T-bills accrue to roughly 4% of publicly traded companies. The compound return of the stock market is generated almost entirely by a small subset of businesses that compound intrinsic value at high rates over long periods; everything else is noise that averages out.

The implication for portfolio construction: the investor who holds 150 stocks is almost certain to hold the 4% (because they hold everything), but they also dilute the compound return with the 96%. The investor who holds 20 stocks and correctly selects from the 4% compounds dramatically faster. Cremers and Petajisto’s academic confirmation: high active share + low turnover = persistent excess returns. Both elements are required — selection (active share) and holding (low turnover). The compound return is earned in the holding, not the trading.

The kryptonite for this structural implementation is prospect theory: drawdowns averaging 41% in even the best concentrated portfolios cause most investors to exit before the compounding accrues. Lou Simpson’s formulation, quoted by Hagstrom: “It’s not difficult to identify good businesses. The hard part is holding on to them for a decade.” The difficulty is not analytical but neurological.

See Robert Hagstrom on Pragmatic Truth, Multi-Disciplinary Investing, and the Concentrated Portfolio and Pragmatic Theory of Truth.

Van Den Berg: mental compounding

Arnold Van Den Berg adds a dimension rarely treated in investment literature: mental habit as compound interest. His 50 years of daily self-hypnosis practice — counting backwards 100 to 1, Émile Coué’s “every day in every way I’m getting better and better” repeated 30 times in a cold shower, the progressive relaxation induction — represents a compounding of cognitive and emotional resilience that is causally prior to investment results.

The mechanism: each session in alpha/theta state deepens the neural pathway that produces calm, focused, truth-oriented action. The 86-year-old who recovers from four simultaneous strokes without meaningful deficit, who stands on one leg for 40 seconds when the average is 5–10 seconds, who maintains equanimity through six-year bear markets — is the compound result of 50 years of daily deposits.

Coué’s formula explicitly names the compounding dynamic: “every day, in every way, I’m getting better and better.” Not “I am great” (a static claim); “getting better and better” (a trajectory). The direction is the compound; the daily repetition is the deposit.

See Arnold Van Den Berg on Survival, the Subconscious Mind, and a Life Well Lived and Subconscious Programming.