While market participants debate whether artificial intelligence can sustain equity valuations, two leading Wall Street firms have reached a strikingly different conclusion: crude oil is what truly moves markets.

Rich Privorotsky, head of Goldman Sachs' single delta trading desk, and Charlie McElligott, Nomura's top cross-asset strategist, approached the question from different analytical perspectives yet arrived at the same verdict: oil dictates the bond market, and the bond market dictates risk assets. Until oil prices stop climbing, all valuation narratives - including the AI story - remain downstream variables. Privorotsky put it bluntly: "Rates plus energy, that is still the core theme." McElligott characterized crude as "the straw stirring the current global macro risk cocktail."

Escalating conflict between Saudi Arabia and Houthi forces pushed oil prices higher overnight, driving yields upward. Long-end U.S. Treasury yields have now broken above 5% and continue setting fresh highs. Privorotsky warned this creates a "toxic combination of rising stagflation concerns" for risk assets.

Meanwhile, Goldman Sachs estimates that disruptions to Persian Gulf oil flows have reached 6.7 million barrels per day, with the global energy supply gap widening.

Both analysts see diplomatic breakthroughs - not military action - as the only credible path forward. A potential meeting between the leaders of the world's two largest economies next week is flagged by Goldman as a key observation point, while Nomura identifies the U.S. energy export ban as a potential extreme left-tail risk. Until any such turning point emerges, the transmission chain will continue to dominate market direction: resolve energy to resolve rates, resolve rates to resolve risk assets.

The Transmission Chain: How Oil Becomes the Anchor for Bonds

Privorotsky's logic is straightforward. "The marginal barrel sets the price." With diesel and refined product prices this elevated, inflationary pressure spreads through freight costs, food prices, and producer price indices into the broader economy. This means there is little sustainable reason for yields to decline. His conclusion: "Until energy stabilizes, risk assets cannot function properly. Oil prices need to stabilize first, then rates can stabilize, and only after rates stabilize do those valuation arguments become meaningful."

McElligott echoed this assessment in Nomura's cross-asset report, tracing back to a September 10 research note where he first flagged that European rate markets were "waking up" to the increasingly "structural" nature of supply shortages from energy and petrochemical shock 2.0. The current physical supply picture shows global shortages across energy, refining capacity, very large crude carriers (VLCCs), and all related resources.

Diesel is 'Patient Zero' with Negative Convexity Lurking in the Background

McElligott identifies diesel as "patient zero" in this inflation transmission cycle, aligning perfectly with Privorotsky's description of inflation spreading through freight, food, and producer prices. McElligott believes European diesel crack spreads are dragging eurozone rate option volatility back toward levels seen at the onset of the Iran war.

In this environment, negative convexity risk is accumulating in market structure: significant positioning skews toward high-strike payers in the middle of the curve, CMT accumulator structures continue pushing skew and volatility-of-volatility higher, and recent large VIX call buying - including 125,000 November 31-strike contracts on September 4 and 126,000 November 34-strike contracts, plus 128,000 October 28-strike contracts on August 28 - collectively form a potential "energy pocket." Should risk suddenly accelerate, dealers face passive hedging pressure across both rate and VIX options at a time when bank and dealer loss tolerance is generally low.

McElligott argues that to break the current "macro muddle" - low at-the-money implied volatility, rates oscillating within intraday straddle ranges, crude swinging with headline news, and equities still near all-time highs - energy must first break out to new extreme levels.

Diplomacy is the Only Way Out: Two Key Junctures to Watch

Both institutions view diplomatic breakthroughs as the sole credible resolution. Several faint signals have emerged: Trump has urged Zelensky to stop striking Russian refining infrastructure; Ukraine has indicated willingness to consider a reciprocal energy ceasefire if Russia takes it seriously; and Trump claimed Iran is "desperate to reach a deal quickly," though Tehran quickly denied this. The diplomatic atmosphere has shifted somewhat.

Goldman highlights the potential summit between leaders of the world's two largest economies next week as a key observation point, while Nomura flags the U.S. energy export ban as another potential market inflection point.

Privorotsky's assessment is concise: "Unless military strategy suddenly proves far more effective, the credible path is diplomacy. We saw small signs yesterday, but nothing convincing yet."

Nomura's McElligott believes that with Trump in a self-imposed bind, the left-tail risk of a U.S. energy export ban would deliver a major shock to the global economy - especially to European and Asian nations lacking energy independence. An export ban "would certainly trigger all of this," he writes, subsequently impacting the rate volatility component and dragging down asset beta.

This is also why both institutions remain cautious about AI as a current market catalyst. McElligott is explicit: without an energy/rates shock serving as a more credible left-tail risk, the "AI slowdown" narrative is "quite far from having any material impact, and I remain fairly skeptical of it as a catalyst for the current pullback."

Analysts point out that until any of these turning points materialize, the conclusion remains singular: solve energy to solve rates, and solve rates for risk assets to function normally. The oil barrel is the bond market.