Citadel star analyst: Understanding the Iran war, "track the armies, not Twitter"

The Middle East war is reshaping the global market landscape, while most investors have yet to fully recognize the depth and persistence of this crisis.

Citadel Securities analyst Nohshad Shah warned in his latest report that the magnitude of this geopolitical shock is enough to knock global growth and inflation off their established tracks, and the market’s habitual “buy the dip” mentality is seriously underestimating the consequences of a prolonged energy price shock. His core judgment is concise: “Follow the armies, not Twitter.”

Shah points out that the U.S. recently announced an increase of up to 10,000 troops in the region, Iran continues to launch drone and missile attacks, and the Houthis threaten the Bab el-Mandeb Strait — all indicating the conflict remains deeply trapped in escalation with no signs of resolution.

For the market, the impact of this crisis has begun to shift from an inflation shock to growth risk. Shah's analysis shows that in the early stage of the conflict (Feb 27–Mar 25), interest rates and the dollar accounted for 56% of financial tightening; recently, this structure has reversed, with risk assets driving 61% of the tightening and peaking at 78% last Friday. This means the market’s focus is shifting from the inflation narrative to the growth narrative, and bonds are poised to regain their role as a hedge for risk assets.

Escalation trap: No good exit options

Shah characterizes the current situation as a “classic escalation trap”—each side ramps up, expecting the last round of pressure will force the other to yield, but every escalation is read as aggression, triggering larger countermeasures, with violence intensifying until it exceeds the initial strategic benefits of the war.

The Strait of Hormuz is a critical choke point for global energy trade, placing it under actual Iranian control is unacceptable to the U.S. and most countries. Meanwhile, lacking security guarantees, Iran is equally unlikely to accept any ceasefire deal proposed by the U.S. Shah believes, this structural dilemma means the conflict is unlikely to end in the short term.

He stresses the essential difference between this crisis and last year's tariff shock—the tariff shock was unilateral and financial in nature, while the destruction of physical energy infrastructure and global trade supply chains this time may take months or even years to repair.

Central banks’ dilemma: Stagflation risk emerges

Shah notes that this conflict presents a major challenge for central banks and marks a fundamental shift in policy narratives versus before the conflict.

The current macro backdrop is fundamentally different from 2022: policy rates are higher, there’s no demand release from reopening after the pandemic, excess savings are mostly depleted, and global coordinated fiscal stimulus is unlikely. Against this backdrop, the real risk is that growth takes a severe hit while inflation keeps rising—stagflation.

Markets have now priced in almost three rate hikes by the European Central Bank and the Bank of England this year, while the Fed is expected to pause its rate cuts. But Shah warns, if central banks are forced to aggressively raise interest rates to curb inflation expectations spiraling, it may further intensify economic and financial pressures, creating highly uncertain second-round effects. His conclusion: In any scenario—whether central banks actively tighten or energy shocks passively drag down growth—so long as the war persists, demand destruction will occur.

Energy is AI’s Achilles’ heel, bonds regain hedging value

Shah particularly highlights the unique vulnerability of the AI theme in this crisis because its core pillar is energy. Damage to physical infrastructure, rising premiums for reliable electricity, security risks for Middle East data centers, helium shortages, and broader supply chain disruptions together add multiple pressures to the AI investment narrative. He pointedly states: “We are not out of the woods yet.”

Shah also observes extreme readings of stock-bond correlations—the 21-day rolling correlation coefficient once touched -0.95 (stocks down, bonds down, i.e., yields up), a figure that historically signals a turning point in macro dynamics.

As growth concerns start to dominate market pricing, Shah clearly adjusts his previous stance. He says he previously tended to be bullish on yields, as markets were generally shorting tail inflation risk; but now valuations have shifted to a new level, and the feedback loop from rising energy prices to weakening growth has become more substantial. In this context, long-term fixed income assets should begin to reassert their hedging function against risk assets.

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