The Four Regimes
1. Goldilocks
Growth: Steady or improving
Inflation: Low and stable (roughly 1–3%)
Fed Policy: Patient, no urgency to hike
Tended to do well: Stocks (especially growth), REITs, credit
Example: much of 2010–2019, and 2024
2. Reflationary Boom
Growth: Rising (above trend)
Inflation: Rising (CPI > 3% and accelerating)
Fed Policy: Behind the curve or hiking to cool demand
Tended to do well: Commodities, value stocks, TIPS, energy
Example:2003–2007 (commodity boom), 2021 (reopening and stimulus)
3. Stagflation
Growth: Falling (below trend or contracting)
Inflation: High and sticky
Fed Policy: Constrained, cannot cut without reigniting inflation
Tended to do well: Commodities, gold, cash, short duration
Example:1973–1975 and 1979–1980 (oil shocks); 2022 was a milder case
4. Deflationary Bust
Growth: Contracting or sharply decelerating
Inflation: Falling, sometimes below 2%
Fed Policy: Cutting aggressively; QE possible
Tended to do well: Government bonds, gold, defensives, cash
Example: 2008–2009 (GFC), 2015–2016 (China growth scare)
Regime Detection Indicators
Growth Indicators
- • GDP (quarterly): compared with the economy's trend rate, about 2% for the US
- • ISM Manufacturing PMI: Above 50 = expansion, below 50 = contraction
- • Unemployment Rate: Rising = weakening growth
- • Retail Sales: consumer spending is about two-thirds of US GDP
Inflation Indicators
- • CPI (headline): the most widely reported measure
- • Core PCE: the Fed's preferred gauge (its 2% target refers to headline PCE)
- • 5Y5Y Breakevens: Market's inflation expectations 5 years forward
- • Wage Growth: Leading indicator for services inflation
Historical Regime Examples
- 2010-2019 Goldilocks: GDP growth averaged about 2.3%, CPI inflation about 1.8%. The S&P 500 returned about 250% including dividends; the 10-year yield mostly sat between 1.5% and 3%. The Fed raised rates slowly from 2015 to 2018.
- 2021 Reflationary Boom: GDP grew about 6%, and CPI inflation rose from about 1.4% to 7% over the year. The Fed kept rates near zero while government stimulus was large. Commodity prices rose sharply, and value shares beat growth shares for the first time in years.
- The 1970s and 2022: CPI inflation peaked at 12.3% in 1974 and 14.8% in 1980, with recessions in between. In 2022 inflation reached 9.1% and growth slowed sharply, though the US economy did not shrink for the year. Both times shares and bonds suffered together, the defining feature of the quadrant.
- 2008–2009 Deflationary Bust: GDP fell about 4% from peak to trough, unemployment reached 10%, and consumer prices briefly fell. The Fed cut to zero and launched QE. Long-dated Treasuries rose sharply in 2008 while the S&P 500 fell 57% from its peak. A classic flight to safety.
How Assets Have Behaved in Each Regime
- Goldilocks: Shares have generally done well, especially growth and quality companies. Falling real yields have supported long-dated bonds, and credit spreads have tended to narrow.
- Reflationary Boom: Value and cyclical companies, commodities and energy have tended to lead. Rising nominal yields have pushed bond prices down, and inflation-linked bonds (TIPS) have held up better than ordinary ones.
- Stagflation: The hardest regime for a traditional 60/40 portfolio, because shares and bonds can fall together. Cash, gold, TIPS and short-dated bonds have historically held up best, and long-dated bonds and growth stocks worst.
- Deflationary Bust: Investors have moved towards safety. Government bonds, especially long-dated ones, have tended to rally, defensive sectors have beaten cyclicals, and emerging markets and high yield have struggled.
- Regime transitions: Some of the largest losses have come during shifts between quadrants, when assets that had worked together stop doing so. The move from Goldilocks to Reflationary Boom to Stagflation in 2021–2022 is a recent example.
Bottom Line
The pattern: Professionals use growth and inflation data to judge which regime the economy is in, and which way it is heading. The shifts between regimes, such as 2021-2022, are where assets that had worked well together suddenly stop doing so, which is why the direction of travel matters as much as the current reading.
Related
Educational content only. It describes how markets have behaved in the past and is not investment advice.