Capital cycle

The idea comes from Marathon Asset Management's client letters, collected and edited by Edward Chancellor as Capital Returns (2015). Page for page, it's the most valuable framework in the phase, and the whole of it compresses into one paragraph. We've written that paragraph in our own words:

(our compression of the Marathon argument, not a quotation) Returns on capital are driven by the balance of supply and demand. Every analyst on earth forecasts demand, which is hard, because it depends on consumers, GDP, fashion and weather. Almost nobody tracks supply, which is easy, because capacity gets announced years in advance in press releases, capex budgets, order books and rig counts. So an analyst who simply watches where capital is flowing knows something the market systematically underweights. Today's capex boom is tomorrow's glut, and today's starvation is tomorrow's pricing power.

What are the six stages of the capital cycle?

The anatomy of the cycle. Commit the six stages to memory. You'll need them in order for the mastery check, and the app's cycle-stage classifier drills them.

1. High returns. An industry earns well above the cost of capital, because demand surprised, capacity is tight, or a temporary advantage holds. Prices and margins are strong. Incumbents' stocks re-rate and the sector's share of the index swells.
2. Capital floods in. The high returns are an open-air advertisement, to borrow Greenwald's phrase, and entry pressure is the default state of the universe. Incumbents expand ("we must defend share") and entrants arrive. Banks and bond markets fund everyone while IPOs and QIPs cluster. Analysts extrapolate the good years. Managements, paid on size and growth and cheered by consultants and bankers, approve capex at the top. Every individual decision is locally rational. The sum is a synchronized capacity wave.
3. Capacity arrives, late and together. Capacity takes years to build. A cement plant needs ~3 years, a greenfield steel plant ~4 to 5, a ship ~2 to 3, a semiconductor fab ~2 to 3, a hotel ~4. So supply ordered at the peak of enthusiasm lands after demand has normalized. It all arrives at once, too, because everyone ordered at the same time in response to the same prices. That's the cruel physics of it.
4. Returns collapse. Utilization falls and pricing breaks, which in commodity industries means price falls to the cash cost of the marginal producer on the industry cost curve. Then the ROIC−WACC spread inverts. The leveraged players hit distress first, because capacity built with debt at peak asset prices must now service that debt at trough cash flows.
5. Capital flees. Capex is slashed below depreciation and projects are abandoned. Weak players sell assets or die, through bankruptcy or, in India, the IBC. Index weight shrivels and analysts drop coverage. Equity issuance is now forced, to repair balance sheets, where before it was eager. Consolidation concentrates the survivors. And supply exits slowly. Plants get mothballed instead of vaporized and ships sail for 25 years, so busts last longer than intuition says.
6. Returns recover. Demand grows into the stagnant capacity and utilization tightens. Consolidated survivors stop undercutting each other on price, returns climb back through the cost of capital, and the advertisement switches back on. Go to stage 1.

Why watch supply instead of demand?

Why your edge is on the supply side. There are three reasons, all structural. First, supply is knowable. Capacity announcements and order books are published, and so are capex budgets and rig counts. Demand forecasts are guesses, while the supply pipeline is a schedule. Second, the behavioral machine amplifies it. Managements suffer the agency problem. Empire-building and growth-linked pay feed it, and so does the "torture of peer pressure". If your rival announces a plant and you don't, you look timid for the three years it takes for you to look wise. Investors extrapolate. And the investment-banking industry is a professional capital-cycle accelerant, because issuance fees are earned at stage 2, not stage 5. Chancellor's introduction documents the pattern across two centuries, from canals to fiber optics.

Third, mean reversion has a mechanism. When you watched ROIC fade toward WACC in the transition matrices, this was happening off-screen. The capital cycle is why the base rates are what they are, and why the exceptions, the moats, are so valuable.

Tell the same story from the demand side and you get the industry life cycle you learned alongside the five forces: embryonic, growth, shakeout, mature, decline. Each stage has its own growth, margin, capital-intensity and consolidation signature. Its growth stage covers the same years as stage 2 here, and its shakeout matches stage 4. Use the life cycle for the decade-scale direction and the capital cycle for the timing, because announced capacity is published and demand is a guess.

How does the capital cycle affect a moat?

The cycle and the moat: weather versus climate. For a no-barrier industry, which per Greenwald is most of them, the capital cycle simply is the return stream. ROIC oscillates around WACC with the cycle, and the only investable questions are cost position and cycle timing. For a moated business the cycle is weather. Capacity waves crash against captivity and scale, then recede. Paint capacity in India has been added many times over the decades, and Asian Paints' ROCE sailed on. Now for the thread the moat work left hanging. When returns are high enough for long enough, the cycle eventually sends a wave big enough to test the wall itself. Indian decorative paint earned 25%+ ROCE for so long that it summoned a ~₹10,000 crore committed entry (Birla Opus, from 2024). That money came from cash flows in cement, and that's no accident, because cement is the business that taught the Aditya Birla group everything about capacity waves. Industry margins compressed within a year. Whether the wall holds is a capstone-grade question, and the share table, gross margins, and A&P intensity of FY25 to FY28 will answer it.

The general law: a moat verdict earns its CAP only after you've checked what the capital cycle is currently sending at it.