Executive Summary
- The "Great Moderation" (2008–2021) is structurally over; we have entered an era of supply-side volatility.
- Deglobalization and the green energy transition are inflationary forces that central banks cannot solve with interest rates alone.
- The correlation between stocks and bonds has flipped positive, breaking the traditional 60/40 hedge.
- Portfolios must pivot 20-30% allocation toward Real Assets (Infrastructure, Commodities, Real Estate) to survive the coming decade.
For forty years, the investment world operated under a specific set of physics: interest rates fall, globalization lowers costs, and bonds hedge stocks. This was the "Goldilocks" era of asset management.
As we enter the latter half of 2025, it is becoming undeniable that the physics have changed. The sticky inflation prints of Q1 and Q2 were not anomalies; they were the new baseline. The era of Zero Interest Rate Policy (ZIRP) provided a tailwind for all financial assets, but that wind has turned into a cross-current.
The Three Horsemen of Structural Inflation
Unlike the cyclical inflation of the past, today's price pressures are structural. We identify three primary drivers that will keep the neutral rate (R-star) significantly higher than the 2010s:
- Deglobalization: The fragmentation of supply chains—"friend-shoring"—prioritizes resilience over efficiency. This is inherently inflationary.
- Demographics: The shrinking workforce in developed markets and China means labor has pricing power for the first time in decades.
- Decarbonization: The transition to a green economy is capital intensive. The demand for copper, lithium, and grid infrastructure will drive commodity super-cycles.
Stock-Bond Correlation Regime Change
The Death of the 60/40 Portfolio
The traditional portfolio (60% Stocks, 40% Bonds) relies on one crucial assumption: that when stocks fall, bonds rise. This negative correlation provides the diversification.
However, in an inflationary environment, stocks and bonds fall together. We saw this in 2022, and we are seeing it again in 2025. If your "safe" bucket (bonds) loses value at the same time as your "risk" bucket (stocks), you have no hedge.
"Bonds are no longer insurance; they are simply a lower-returning risk asset. The new insurance is real assets."
The Solution: The 40/30/30 Allocation
At Pembrium Partners, we advocate for a structural pivot. The modern institutional portfolio must include a significant allocation to assets that benefit from, or are neutral to, inflation.
-
01
Infrastructure & Data Centers Cash flows linked to CPI (inflation) with high barriers to entry.
-
02
Private Credit Floating rate structures that benefit from higher-for-longer interest rates.
-
03
Digital Sovereignty Bitcoin and decentralized infrastructure as a hedge against fiat debasement.
The zero-rate era was a historical anomaly. As we revert to the mean, capital allocation requires more active management, deeper diligence, and a willingness to look beyond the public markets.
James Sterling
Managing Partner & CEO
James leads the Investment Committee at Pembrium Partners. He formerly served as Global Head of Macro Strategy at Blackstone.