Harbor Capital’s Strategic Partners on the Iran Conflict and What it May Mean for Your Portfolio Construction Efforts
A Consistent Picture Emerges
The Strait of Hormuz, where a significant portion of global oil, liquefied natural gas, and the world's fertilizer exports pass, has never been closed for this long. Quantix Commodities describes the disruption as an energy price shock the likes of which we have not seen since the 1973 oil embargo.
To understand what that means for portfolios, Harbor turned to the specialists they partner with on different portfolios. Running systematic, discretionary, and relative value strategies, these six managers have been making real‑time decisions through every week of this ongoing crisis.
Across different processes, a consistent picture emerged: markets were tighter than consensus had priced, and the conflict revealed and accelerated structural trends that were already reshaping commodity markets long before the conflict began. We observe several themes that have continued to hold across all six managers:
- Energy has been the anchor. Oil markets entered this conflict with almost no spare capacity and nowhere to absorb a shock of this magnitude. Short-term disruptions compound quickly; longer ones force prices high enough to destroy demand before supply can rebalance. A strategic energy allocation could hedge against the single largest driver of inflation and macro volatility.
- Inflation mitigated. Energy shocks move into metals, agriculture, and livestock through well-documented channels. A portfolio concentrated in energy captured the initial move; a diversified commodity allocation participated in the full cascade. Broad diversification within commodities may matter more than sector timing.
- Supply-driven volatility is different. Supply shocks have been historically bullish for commodities; demand shocks have not. When inflation has been supply-driven, the 60/40 portfolio has historically broken down: stocks and bonds have moved together on the downside, and commodities appeared to become the only reliable diversifier at the moment portfolios appear to need it most. We believe this is the environment commodities are built for.
- This conflict appears to be an accelerant, not an anomaly. Managers frame the Iran conflict as accelerating trends already underway: deglobalization, supply chain fragility, and increasing stockpiling of resources for security. We believe that structural shift in demand behavior supports the case for a permanent commodity allocation, independent of any single geopolitical event.
- We believe volatility is the entry point, not the exit. Investors tend to reduce commodity exposure during volatile periods, which is precisely when we believe diversification benefits are highest. The opportunity is greatest when allocations feel most uncomfortable.
What each manager has been doing, and why, follows below.
CoreCommodity Management
Energy Exposure Increased into the Tightening
CoreCommodity held deferred calendar month contracts at the end of February. After the conflict emerged, the portfolio increased its net directional exposure in the energy complex to reduce the risk of holding those positions into a tightening market. The move reflected prior analysis of the supply environment, not a response to headlines.
A Sharp Reversion When the Conflict Eases
The view on resolution is conditional and disciplined: if the situation eases, the term structure is likely to weaken quickly. Historically, markets impacted by significant exogenous events tend to revert to fundamental balance points, and that correction can be sharp.
The Hedge Has to Come Before the Crisis
CoreCommodity Management believes supply shocks appear to be arriving faster and with less warning than they did a decade ago. A portfolio that waits for the crisis to build the hedge may already be late. In a landscape of elevated geopolitical tension and growing climate‑related supply constraints, commodity exposure is risk management, sized for a world where disruptions are often recurring rather than exceptional. The current conflict appears to extend well beyond energy: a diversified commodity portfolio often seeks to provide access to opportunities that a narrow energy sleeve often miss entirely.
Neuberger Berman
Overweight Energy, Actively Managing Concentration
Neuberger Berman was overweight energy (oil, natural gas, LNG, and power) before the conflict. After the initial price spike, the firm took profits selectively to manage concentration but left the portfolio’s structure intact. The guiding framework is what the team calls “scarcity at a reasonable risk,” a discipline they believe is built for environments where outcomes are genuinely binary and moving fast.
A Duration Problem with Two Live Outcomes
Their oil analysis frames the Strait of Hormuz as a duration problem rather than a traditional supply‑demand one. Physical markets have almost no slack. A few more weeks of constrained flows would likely push prices back toward 2022 crisis highs. Months of disruption would likely draw inventories they believe to critically low levels, at which point prices would rise far enough to destroy demand and rebalance the market through that mechanism alone. Managing upside exposure and downside risk simultaneously they believe is the only defensible posture.
Gold: Unreliable When You Often Need it Most
Historically, in supply‑driven inflation shocks, where inflation originates from physical shortages rather than from monetary conditions, gold has behaved differently from energy and industrial commodities. Its inflation‑hedging properties have been unreliable in precisely the environment it is most often assumed to cover. That asymmetry is why Neuberger sizes gold deliberately rather than defaulting to it as a universal inflation trade. When inflation is driven by supply shocks, stocks and bonds tend to move together on the downside, as they did in the 1970s and in 2022. In those moments, commodity volatility may become the only source of genuine negative correlation available in a conventional portfolio.
From Just‑in‑Time to Just‑in‑Case
The shift from just‑in‑time inventory management to just‑in‑case stockpiling has accelerated across both the public and private sectors in a deglobalizing world. That behavioral change has created a structural floor for commodity demand that may persist well beyond any individual conflict. Energy price spikes may not stay in energy: higher LNG prices may constrain smelting capacity with a lag, higher oil prices tighten corn and sugar markets through ethanol blending incentives, and rising diesel costs lift demand for soybean oil, canola, and rapeseed through biodiesel mandates. As grain prices rise, feed costs for livestock producers could follow. A portfolio concentrated in energy could captures the initial move; a diversified one often seeks to participate in the cascade.
Quantix Commodities
Constructive on Petroleum
Quantix anchors their analysis in physical mechanics rather than price forecasts. The 20 million barrels of oil and refined products blocked from traversing the Strait each day represent a compounding deficit, growing with each closure. Producers running out of storage shut down in production. That production takes weeks or months to restart. As the team puts it: “Every day that passes without the necessary supply, the potential downstream effects become greater and more widely spread.”
Gold: Near‑Term Caution, Medium‑Term Conviction
The Quantix Strategy moved constructively on petroleum, both crude and products, as it became clear the conflict was uncontained. On gold, the near‑term view has been cautious: the dollar has been the dominant safe haven in an uncontained conflict, and there appears to be a real risk that Middle Eastern sovereigns reduce gold reserves to fund military or civic spending, a break from several years of steady accumulation. The medium‑term case for gold holds, with dedollarization and deglobalization accelerating, but Quantix has been sizing their position to reflect sequencing rather than just direction.
Second and Third Derivative Risks in Grains
Quantix Commodities believes grains are less constructive near‑term given healthy global stockpiles, but the second and third derivative risks appear significant: fertilizer prices have been rising as Hormuz‑dependent supply routes tighten, governments have been considering export bans in response to food security pressures, and geographic price dislocations have been emerging that have no real historical precedent. The rapid increase in global energy prices from this conflict appear to carry implications for the global economy not seen since the 1973 oil embargo. Quantix Commodities believes the difference is that markets today have less time to adjust.
Schroders
Pre‑Positioned Through Options and Overweight Futures
Schroders had positioned for the spike before it came, through longer‑dated crude oil call options and overweight futures. Two signals had been pointing against the consensus surplus narrative: the futures curve had remained in a structure pricing in near‑term scarcity and the expected inventory build had not appeared. A market complacent on low oil prices and not positioned for conflict was set up for a sharp move.
$100‑$120 Near‑Term, $150‑$200 if Prolonged
If access to the Strait remains restricted for four to five weeks, Schroders estimates oil could reach $100 to $120 per barrel. A conflict measured in months likely takes prices above previous all‑time highs, toward $150 to $200. They believe the supply side cannot offset it: U.S. shale growth has been stalled and top‑tier acreage is increasingly depleted, higher prices will likely not produce an immediate response given capital discipline and investment hurdles, and Saudi Arabia’s spare capacity is already close to its ceiling regardless of pipeline alternatives.
Tail Risk and the Broader Complex
The conflict could evolve into a prolonged regional war or produce a failed state in Iran. The region does not have a good track record of smooth transitions. If either scenario materializes, Schroeder believes the commodity disruption could extend well beyond the Strait into a multi‑sector, multi‑year structural shift. Gold at $8,000 per ounce may be plausible in a significant and prolonged oil shock scenario, with $6,000 as their more moderate estimate. Within agriculture, every pathway from oil shock often to crop markets traces back to the same point of disruption, whether through biofuel demand, fertilizer supply, or energy input costs.
SummerHaven Investment Management
Positioned Early, Risk Reduced Systematically
SummerHaven came into 2026 already positioned for tighter commodity markets. Their quantitative process has responded to elevated volatility by reducing risk exposures proportionally, which is their system working as designed.
Why U.S. Net Export Status May Keep Prices Elevated Longer
The U.S. is a net exporter of oil and gas, and oil intensity of U.S. GDP is now roughly half what it was during the 1980s. That means the American economy has absorbed oil price spikes better than it did in 1973. But the effect has run in an unexpected direction: because U.S. growth has been less damaged by high oil prices, demand has held up better, supply incentives have strengthened for domestic producers, and prices have stayed elevated longer than historical models would have predicted. SummerHaven believes a conflict that ends tomorrow could still leave oil prices supported for an extended period.
Supply‑Driven Is Constructive, Demand‑Driven Is Not
SummerHaven’s framework on commodity volatility has been direct. Supply‑side volatility, driven by wars or climate events, has typically been constructive for commodities. Demand‑side volatility, driven by GDP contraction or sovereign defaults, has been typically negative. SummerHaven believes the current environment appears unambiguously supply‑driven, which means the volatility in commodity markets could reflect opportunity as much as risk.
AQR Capital Management
No Overrides, Process Behaving Within Expectations
AQR has made no overrides to their systematic process during this period of elevated volatility, and they are clear that the discipline to hold course is a feature of the framework. The process has been behaving within expectations for the risk environment that has emerged. In a moment when discretionary managers have been navigating genuinely binary outcomes, a systematic process that adjusts through models rather than through judgment represents a different kind of risk management, with its own advantages in fast‑moving markets.
Reducing Notional Exposure to Hit the Same Risk Target
Typically, when volatility rises, AQR’s process reduces notional exposure: They believe less capital is needed to hit the same risk target when assets are moving more. The risk team runs live monitoring of free cash to prevent forced selling during large market moves. The goal is to remain fully invested through the volatility, not to step back from it.
Volatility as Signal, Not Noise
AQR believes commodity markets are driven by macroeconomic forces and supply‑and‑demand imbalances that create sustained trends and shorter‑term dislocations. AQR's strategy has been built to benefit from exactly those environments. The process combines a long‑biased, risk‑balanced strategic allocation with an active tactical component focused on inventories, production, consumption, and economic activity in major commodity‑consuming regions. It includes a range of alternative commodities with distinct macro drivers that traditional indexes often miss.
Harbor’s Perspective
Six managers, six different processes, we see one consistent finding: the conditions that make this disruption consequential were not created by the conflict. Low inventories, fragile supply chains, and constrained spare capacity were already in place. The strikes on Iran accelerated a repricing that appeared to be structurally overdue.
The case for commodities here is a strategic allocation argument, not a crisis trade. A 10% or greater allocation, sized for recurring supply shocks and commodity‑driven inflation, reflects an environment that is actually in front of investors rather than the one that characterized the low‑volatility decade before it. We believe a a traditional 60/40 structure provides less hedge in exactly the moments it is often most needed.
Commodities seek to provide exposure through a diversified mix of systematic, discretionary, and relative value managers whose approaches complement each other across different volatility regimes rather than concentrating risk in a single style. The managers represented in this piece are managing assets through real disruption. What they are doing, and why, we believe makes the case directly.
One of our consistent behavioral observations from managers: investors tend to reduce commodity exposure during volatile periods, which is precisely when we believe the diversification benefits are highest. Current volatility is a reason to review the allocation, not reduce it.
To learn more about how you may want to position a thoughtful allocation to commodities with your clients, contact your Harbor regional investment consultant.
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There is no guarantee that the investment objective of the Fund will be achieved. Stock markets are volatile and equity values can decline significantly in response to adverse issuer, political, regulatory, market and economic conditions. A non‑diversified Fund may invest a greater percentage of its assets in securities of a single issuer, and/or invest in a relatively small number of issuers, it is more susceptible to risks associated with a single economic, political or regulatory occurrence than a more diversified portfolio.Üommodity Risk: The Fund has exposure to commodities through its and/or the Subsidiary’s investments in commodity‑linked derivative instruments. Authorized Participant Concentration/Trading Risk: Only authorized participants (“APs”) may engage in creation or redemption transactions directly with the Fund. Commodity‑Linked Derivatives Risk: The Fund’s investments in commodity‑linked derivative instruments (either directly or through the Subsidiary) and the tracking of an Index comprised of commodity futures may subject the Fund to significantly greater volatility than investments in traditional securities.
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Quantix Commodities is a third‑party subadviser to the Harbor Commodity All‑Weather Strategy ETF.