Why Quality Stocks Hold Up Better in Inflationary Regimes

From 1966 through 1981 — fifteen years of on-and-off inflation, two oil shocks, and the Volcker tightening that finally broke the cycle — the S&P 500 delivered a real total return of approximately zero. Nominally, markets were higher by the early 1980s. In purchasing-power terms, an investor who held through that entire stretch had essentially stood still for a decade and a half. That number is the one most cited when discussing what inflation does to equity investors broadly.

But the aggregate conceals the dispersion that actually mattered. Not every company stood still. Consumer staples businesses with genuine pricing power — companies that could raise prices faster than their input costs rose — maintained real earnings through that stretch in ways that capital-intensive businesses simply could not. Procter & Gamble kept raising prices on household products. Coca-Cola maintained its brand premium across markets. The structural ability to pass cost increases through to customers without losing volume is what separated them from the businesses that got crushed. In other words: a moat.

The same dynamic played out in compressed form during 2021–2023, when CPI peaked at 9.1% in June 2022 and the Federal Reserve raised rates by 525 basis points in response. May 2026 CPI came in at 4.2% year-over-year — the highest reading since April 2023, per the Bureau of Labor Statistics' June 10, 2026 release — a reminder that inflation isn't a solved problem yet. The framework for navigating it, though, hasn't changed. The evidence is just longer now.

The Two Channels Inflation Runs Through Equity Returns

Inflation damages equity returns through two distinct channels. Understanding both is necessary before you can identify which businesses are actually insulated — and which ones only appear to be.

The first is the valuation channel. Inflation eventually forces central banks to raise nominal interest rates — which flows directly into the discount rate applied to equity cash flows. As the discount rate rises, the present value of future earnings falls. This hits long-duration assets hardest. A company trading at 40 times forward earnings, projecting most of its value in earnings years from now, can see its fair value compress by 30% or more from a 2-percentage-point rate increase — before a single dollar of underlying earnings changes. We covered the mechanics in Interest Rates and Equity Multiples; the relevant point here is that high-multiple businesses are structurally exposed to any inflationary regime that forces rates higher.

The second is the earnings channel, and this is where the quality distinction actually matters. Inflation raises input costs — labor, raw materials, energy, logistics. Every business faces this pressure. The question is whether the business can pass those cost increases through to its customers. Companies with genuine pricing power can. Companies without it absorb the increases as margin compression: higher costs, same prices, lower profits. Wide-moat businesses have the structural ability to raise prices. Businesses without competitive advantages cannot raise prices above the market rate without losing customers to alternatives. Inflation therefore functions as a stress test for competitive position — it reveals which companies actually have pricing power, and which ones only appeared to in a benign, low-cost environment.

The 1970s as a Template

The decade between roughly 1972 and 1982 provides the most demanding stress test in the modern dataset. CPI peaked at 14.8% in March 1980. The 10-year Treasury yield surpassed 15% by late 1981. Oil prices quadrupled in the eighteen months following the October 1973 OPEC embargo. The two channels ran simultaneously: discount rates climbed, while input cost pressures separated businesses that could hold margins from those that couldn't.

S&P 500 real annual returns for the decade were negative — a useful reference point for what broad equity exposure actually delivered during a sustained inflationary regime. But the cross-sectional variation was significant. Consumer staples companies that sold branded products with inelastic demand held their economics in ways that capital-intensive businesses did not. Procter & Gamble raised prices through the decade on laundry detergent, soap, and personal care products without meaningful volume erosion — its customers had limited alternatives and genuine brand loyalty. Coca-Cola's global brand premium sustained pricing across markets. Neither company's stock was untouched during the decade's worst periods. But the underlying earnings power remained intact.

Airlines, steel producers, and commodity processors showed the opposite pattern. Rising fuel, labor, and raw material costs ran straight through to margin collapse because those businesses lacked the ability to raise prices commensurately. Their customers had alternatives. This wasn't a management failure. It was a structural exposure: no moat meant no pricing power, and no pricing power meant the earnings channel worked directly against them — compounding the valuation headwind rather than offsetting any of it.

Pricing Power as the Primary Defense

Pricing power is the operational expression of a competitive moat. A company with genuine pricing power can raise prices — modestly, persistently, in line with or above cost inflation — without triggering meaningful customer defection. That requires something competitors cannot easily replicate: a brand, a switching cost, a network effect, a regulatory license. The wider the moat, the more durable the pricing power. Wide-moat businesses can typically absorb a full inflationary cycle with gross margins substantially intact. Narrow-moat businesses may hold briefly before compressing. No-moat businesses have essentially no pricing buffer at all.

The practical test is visible in the gross margin line. If a company's gross margins remain within two to three percentage points across an inflationary period while input costs are rising, that's direct evidence of pricing power operating. The company is raising prices faster than its costs are rising. If gross margins compress sharply while revenue grows, the company is gaining revenue by absorbing cost increases rather than passing them through. Revenue growth without margin defense is not a sign of resilience. It's a sign that the competitive insulation isn't there.

This connects directly to what David Park describes in The Anatomy of a Long-Term Compounder: businesses with high and durable return on invested capital maintain that ROIC precisely because their competitive position protects their economics from cost pressure cycles. A real compounder doesn't lose its ROIC in an inflationary regime. A business posting attractive returns in a low-inflation environment, but doing so without genuine competitive insulation, tends to see those returns erode quickly when costs rise. The inflation cycle is an efficient auditor of actual versus apparent competitive advantage.

The 2021–2023 Modern Test

If the 1970s provides the historical stress test, 2021–2023 provides the recent one — compressed into roughly two years instead of fifteen, but meaningful nonetheless. CPI peaked at 9.1% in June 2022 (BLS data released July 13, 2022). The Federal Reserve raised rates 525 basis points between March 2022 and July 2023, the most aggressive tightening cycle since Volcker. The S&P 500 fell 19.4% in calendar 2022.

The cross-sectional variation again confirmed the pattern. Consumer staples as a sector fell roughly half as much as the broader market in 2022 — and the outperformance was earned through a combination of lower starting multiples and genuine pricing power. Procter & Gamble's fiscal 2022 10-K disclosed organic sales growth weighted toward pricing rather than volume, confirming that price increases were accepted by consumers without significant attrition. Visa fell approximately 3% for calendar 2022, far below the broad market's decline, because its network pricing runs largely independent of the goods and services flowing through its rails — transaction volume held, and margin compression was minimal.

I'll be direct about one thing I find less settled than the headline pattern implies: the 2021–2023 episode conflated the two channels in ways that make them difficult to separate cleanly. Wide-moat consumer staples outperformed partly because of genuine pricing power and partly because their lower starting multiples made them less sensitive to discount-rate increases. Disentangling the earnings channel from the valuation channel in a specific two-year window is genuinely hard. The 1970s data — where starting multiples were already cheap before the inflationary period intensified — provides cleaner evidence of the earnings channel in relative isolation. The modern episode confirms the direction. It's a noisier test of the magnitude.

A Framework for Evaluating Inflation Resilience

Rather than trying to forecast whether and when inflationary regimes arrive — a prediction business with a poor track record — the more useful approach is building a portfolio structurally resilient across regimes. Three criteria serve as a practical starting point.

First: gross margin stability through the 2021–2023 cycle. Look for businesses whose gross margins held within three percentage points across that period, relative to 2019 levels, while cost pressures were demonstrably real. This is backward-looking but objective. Companies that passed are the ones where pricing power operated in practice — not just in the competitive narrative management presents at investor days.

Second: the pricing-versus-volume mix in organic revenue growth. Annual reports and earnings call disclosures often distinguish price and volume contributions. A business growing revenue primarily through price increases that stick — without volume erosion — is demonstrating that customers accept the increases. A business growing volume while holding prices flat is demonstrating demand, not competitive insulation. The distinction determines how that business performs when demand softens and inflation persists simultaneously, which is the actually difficult scenario.

Third: debt maturity and rate sensitivity. Businesses carrying significant floating-rate debt face a compounding headwind in rising-rate environments — input cost pressure compresses operating margins while rising interest costs compress margins below the operating line. Net-cash businesses, or those with predominantly long-term fixed-rate debt, face no comparable financing headwind. This isn't the primary screen for competitive advantage — balance sheet conservatism without pricing power still leaves a business exposed to the earnings channel. But it is a meaningful distinction between quality businesses that are fully insulated and those partially exposed through their capital structure.

The three criteria together identify businesses that are wide-moat, margin-stable, and balance-sheet conservative — which happen to be the same characteristics associated with consistent performance across full market cycles, not only inflationary ones. The inflation test is a stress-test version of the standard quality framework, applied at higher temperature. The moat that makes a business resilient to inflation is the same one that makes it a sound long-term holding in any environment.

The Regime Observation

The historical record is consistent on this point: inflation harms equity investors broadly through two channels — discount-rate pressure on multiples and cost pressure on margins. But the harm isn't distributed evenly. Wide-moat businesses experience the discount-rate headwind like everyone else. What they avoid is the second hit — the margin compression that compounds the first. And at current market levels, where the Shiller P/E near 41 and a thin equity risk premium leave less cushion against rate surprises than most prior periods, the first channel is running with less margin for error already.

At 4.2% CPI, we are not in the 1970s. But the post-pandemic disinflation has stalled, and the businesses best positioned to compound through the remainder of this regime are the same ones worth owning across any environment: wide moat, proven pricing power, balance sheet to wait. The inflation lens doesn't change the quality framework. But it does make adherence to it more consequential — and the difference between businesses with genuine competitive insulation and those without it more visible.