BlackRock’s Koesterich sees energy stocks as top portfolio diversifier

The 60/40 portfolio, that trusty warhorse of institutional investing, is looking increasingly like a horse with a limp. Russ Koesterich, the portfolio manager behind BlackRock’s Global Allocation Fund, is making the case that bonds have essentially stopped doing the one job investors kept them around for: protecting portfolios when stocks stumble.

His preferred replacement? Energy stocks, which he says now offer the diversification benefits that Treasuries and gold used to provide.

The bond problem

Koesterich’s argument rests on a pretty uncomfortable data point. The 30-year US Treasury yield recently climbed to between 5.25% and 5.32%, levels not seen since 2007. For context, yields move inversely to bond prices, so rising yields mean bond holders are watching the value of their holdings erode right alongside their equity positions.

The correlation between bonds and the S&P 500 has reached roughly 0.45, according to Koesterich’s analysis. In plain terms, bonds and stocks are increasingly moving in the same direction. When your hedge zigs every time your portfolio zigs, it’s not really a hedge anymore.

Gold hasn’t fared much better. During a recent Middle East conflict that rattled markets, gold prices dropped approximately 13%. The classic crisis asset actually lost money during the exact scenario it’s supposed to protect against.

Why energy stocks are stepping in

Koesterich pointed to a telling divergence during that same geopolitical episode. While the broader market declined about 4% and gold tumbled, energy stocks gained roughly 7.5%. The logic is straightforward: geopolitical conflicts, particularly in oil-producing regions, tend to push energy prices higher. Companies that produce or refine that energy benefit directly.

Koesterich, who has managed BlackRock’s Global Allocation strategy since 2017, flagged the growing problem of rising correlations between stocks and traditional safe-haven assets during periods of geopolitical stress in his May 2026 commentary. In a Bloomberg appearance on July 23, 2026, he reiterated that bonds are failing as a hedge, signaling strong conviction in energy stocks.

The macro backdrop reinforces his case. US real GDP growth forecasts have risen to 2.1% for 2026, suggesting an economy strong enough to sustain demand for energy. Oil prices have been climbing, and energy companies are posting improved earnings momentum as a result.

Koesterich has also identified a broader rotation underway. Investors are shifting capital away from concentrated technology positions and moving into cyclical sectors like energy, materials, and industrials.

What persistent inflation means for portfolio construction

The root cause of bonds’ failure as a hedge comes down to one word: inflation. Persistent price pressures have forced the market to reprice long-term rate expectations, pushing Treasury yields higher and keeping them elevated, with the 30-year yield peaking at 5.25–5.32% on August 17, 2026, marking the highest level since 2007.

Koesterich is essentially arguing that energy equities, with their natural inflation hedge properties and inverse correlation to geopolitical risk, fill that void better than any other asset class available today.