{
  "meta": {
    "title": "The 9-Variable CAPE Valuation Framework",
    "titleHtml": "The 9-variable <em>CAPE</em> framework.",
    "description": "Shiller CAPE remains the most reliable equity valuation indicator over 10-year horizons. Nine adjustments — accounting changes, intangibles, interest rates, profit margins — reconcile the indicator to current conditions.",
    "dek": "CAPE has been declared dead, then resurrected, multiple times. Nine adjustments make the indicator's signal cleaner without abandoning the framework.",
    "datePublished": "2026-02-28",
    "dateModified": "2026-02-28",
    "section": "Macro Strategy",
    "readMinutes": 6,
    "wordCount": 800,
    "keywords": ["Shiller CAPE", "cyclically adjusted PE", "PE10", "equity valuation", "10 year forward returns", "GMO valuation", "intangibles accounting", "Shiller PE"]
  },
  "problem": {
    "headline": "CAPE has predicted forward returns better than any single alternative.",
    "price": "−10 pp",
    "priceLabel": "Forward 10-year return at high CAPE quintile",
    "body": "Shiller CAPE in its top quintile has historically been associated with 10-year forward returns 6–10 percentage points lower than CAPE in its bottom quintile. The signal is robust across decades. The criticism is whether structural changes have invalidated the framework — the screen evaluates this honestly."
  },
  "indicatorsHeading": {
    "title": "The nine adjustments",
    "em": "to interpret CAPE.",
    "sublede": "Each addresses a structural change since CAPE's original calibration. Together they describe what the current reading actually means."
  },
  "indicators": [
    {"title": "Current CAPE level vs. own historical percentile", "metric": "Threshold: top vs bottom quintile", "detail": "Position within own history is more informative than absolute level. Above 80th percentile, forward returns are meaningfully compressed."},
    {"title": "Intangibles accounting adjustment", "metric": "Pattern: software, brands", "detail": "Modern S&P 500 has higher intangible-asset content than historical norms. Earnings reflect intangibles less directly; CAPE may overstate valuation richness."},
    {"title": "Real interest rate environment", "metric": "Pattern: low rates support higher CAPE", "detail": "Low real rates structurally support higher equity multiples. CAPE comparisons across rate regimes need adjustment."},
    {"title": "Profit margin expansion", "metric": "Pattern: structural vs cyclical", "detail": "Recent decades have seen sustained profit margin expansion. If margins are structurally higher, CAPE adjusts upward; if cyclically high, mean reversion is coming."},
    {"title": "Buyback intensity", "metric": "Pattern: shareholder yield", "detail": "Modern S&P 500 returns more capital via buybacks than dividends. Total shareholder yield matters; CAPE based on dividends alone misses this."},
    {"title": "Sector composition shift", "metric": "Pattern: tech weighting", "detail": "S&P 500 tech weight has roughly doubled vs. 1990s norms. Higher-tech composition supports higher CAPE; comparing to pre-tech-shift CAPE distorts."},
    {"title": "Buyback-adjusted earnings", "metric": "Pattern: per-share growth", "detail": "Buybacks reduce share count and inflate per-share earnings. Aggregate earnings growth is slower than EPS growth; CAPE on per-share earnings looks better than aggregate."},
    {"title": "Forward CAPE vs trailing", "metric": "Pattern: smoothing window", "detail": "Forward CAPE projections (using next-period earnings) often look better than trailing CAPE. The signal is in trailing; forward is forecast."},
    {"title": "International CAPE comparison", "metric": "Pattern: relative to other markets", "detail": "Cross-country CAPE comparisons reveal where U.S. is relative to opportunity set. Material U.S. premiums are normal but extreme premiums are signal."}
  ],
  "body": [
    {
      "h2": "Why CAPE works",
      "paragraphs": [
        "Robert Shiller's cyclically-adjusted P/E ratio uses the average of the prior 10 years of inflation-adjusted earnings rather than trailing 12 months. The smoothing eliminates the noise of business-cycle peaks and troughs, producing a more stable valuation indicator. Across many decades of historical data, CAPE has been the single best predictor of 10-year forward equity returns at the index level.",
        "The mechanism: high valuations imply that expected returns are concentrated in multiple expansion (which is a one-time, exhaustible source of return) rather than fundamental earnings growth. Once multiples have expanded, future returns are constrained to earnings growth and dividend yield, both of which are typically lower than market participants' embedded expectations."
      ]
    },
    {
      "h2": "The structural critique",
      "paragraphs": [
        "Critics argue that CAPE is structurally upward-biased in modern conditions due to several factors: lower interest rates support higher multiples, intangibles dominate modern earnings, sector composition has shifted toward higher-multiple industries, and buybacks have replaced dividends. Each critique has merit; together they suggest that the average CAPE level appropriate today differs from the historical average.",
        "The empirical question is whether the current CAPE is high relative to a structurally-adjusted norm or high in absolute historical terms. Both views have evidence. The discipline is to consider both rather than reflexively dismiss the indicator or reflexively act on it."
      ]
    },
    {
      "h2": "Forward-return implications",
      "paragraphs": [
        "Even with structural adjustments, the relative position of CAPE within its own range remains informative. Top-quintile CAPE has consistently produced disappointing 10-year forward returns; bottom-quintile CAPE has produced strong returns. The amplitude may have compressed over time but the directional signal persists.",
        "For retirement planning, the implication is clear: starting retirement in a top-quintile-CAPE regime requires more conservative withdrawal rates and longer bond ladders. Starting in a bottom-quintile regime supports more aggressive equity exposure."
      ]
    },
    {
      "h2": "Practical use",
      "paragraphs": [
        "CAPE is not a market-timing tool at high frequency. Markets can remain at top-quintile CAPE for years (as the 1996–2000 period demonstrated). The signal is most useful at multi-year strategic asset allocation decisions: should the bond ladder be lengthened? Should equity exposure be reduced incrementally? Should retirement timing be adjusted?",
        "At any single point in time, CAPE is one input among many. Its informativeness emerges over multi-year horizons rather than over weekly market action. The discipline is to position with awareness of the regime rather than to time entries and exits."
      ]
    }
  ],
  "faqs": [
    {"q": "Is CAPE useful for picking individual stocks?", "a": "No — CAPE is an index-level indicator. Single-stock valuation requires different frameworks (DCF, multiples versus peers, etc.)."},
    {"q": "Where can I find the data?", "a": "Robert Shiller publishes the underlying data freely on his Yale website. Multpl.com publishes CAPE charts and historical comparisons."},
    {"q": "Does CAPE work outside the U.S.?", "a": "Yes, with regime-specific calibration. International CAPE has predicted forward returns reasonably well; the signal works similarly in major developed markets."},
    {"q": "What's the alternative to CAPE?", "a": "Forward P/E, market cap to GDP, Q ratio, and various sentiment indicators. CAPE has the longest track record and most-replicated evidence."},
    {"q": "Does CAPE break in deflation?", "a": "Possibly. Deflationary regimes shift the valuation framework. Japan's post-1989 experience suggests CAPE can stay elevated for decades in deflationary settings."},
    {"q": "Should I sell when CAPE is high?", "a": "Reduce exposure incrementally rather than time exits. The signal is multi-year strategic, not tactical timing."}
  ]
}