In a week with only four trading sessions, the US stock market concluded with a sharp rally into the Friday holiday and options expiration, with AI-related themes once again serving as the primary driver of gains. However, Goldman Sachs's One-Delta trading desk has warned that geopolitical momentum is stalling, and structural risks within the market are quietly accumulating.
US-Iran nuclear talks have reversed, with Switzerland confirming the cancellation of talks originally scheduled for this Friday. US Vice President Vance has also postponed related travel. Rich Privorotsky, head of Goldman Sachs's One-Delta trading desk, pointed out that geopolitical momentum is slowing noticeably, and the oil market's pricing of expectations for increased Iranian production faces growing uncertainty.
Concurrently, the narrative of the AI race continues to intensify. The launch of China's AI star Zhipu's open-source flagship model GLM-5.2 not only failed to dampen investment enthusiasm in tech stocks but instead further highlighted the necessity for increased spending by hyperscale cloud providers, with hardware suppliers continuing to benefit.
From a technical perspective, low-to-neutral sentiment indicators combined with leverage effects this week significantly amplified volatility in the AI and tech sectors. Goldman Sachs warns: the asymmetric downside structure of Commodity Trading Advisor strategies has taken shape, while uncertainty in the Federal Reserve's policy framework and rising bond market volatility also cannot be ignored.
US-Iran Negotiation Hiccups: Oil Price Geopolitical Premium Not Fully Priced
This week saw a notable shift in the geopolitical landscape. The Swiss Foreign Ministry confirmed the cancellation of US-Iran talks on nuclear issues and other matters originally scheduled for Friday in Switzerland. Vance's postponement of his trip further indicates the talks have reached an impasse. Israel's ongoing military actions in Lebanon constitute a key friction point, with Iran reportedly demanding that the US first practically implement commitments from a memorandum of understanding signed on Wednesday before re-engaging in talks.
The market continues to price in a path for the return of incremental Iranian crude, but the political backdrop is becoming increasingly complex—criticism from Republicans within the US and dissatisfaction from Israel both pressure the prospects for negotiations. Rich Privorotsky noted: "The core issue is a lack of trust: if Iran fully resumes exports and eliminates the oil risk premium, it means voluntarily relinquishing its most significant bargaining chip."
"The market is pricing physical crude, but it has not fully discounted this trust deficit and the continued deterioration of deal momentum." It is this logic that makes the Iranian government inclined towards a more gradual, phased implementation approach rather than an immediate one. The current market pricing for physical barrels does not fully reflect this trust deficit and the ongoing weakening of deal momentum, suggesting the associated risk premium may be underestimated.
AI Race Logic Intensifies, Hardware Vendors as Primary Beneficiaries
This week, the AI theme remained the market's strongest driver. Goldman Sachs's thematic indices for Robotics & Automation, Memory, and AI Semiconductors all hit new highs, while the S&P 500 Index excluding AI components closed down 56 basis points on Thursday, with the divergence between the two continuing to widen. Intel surged 10% in a single day, sparked by unconfirmed reports it might secure manufacturing orders from Apple.
Regarding the AI investment thesis, Privorotsky raised a noteworthy point: the significance of new Chinese models like GLM-5.2 is not limited to driving down computing costs or fostering more intense market competition. Their deeper impact is in reinforcing the internal necessity for US tech giants to increase their investments.
Paradoxically, competition from China is strengthening the inherent necessity for increased AI spending by all parties. Although the new generation of models appears to rely more on reinforcement learning and post-training techniques, reducing dependence on massive pre-training compute, the fundamental logic of the AI race remains unchanged. If the perceived gap between overseas models and the US frontier is seen to shrink from about a year to a few months, the motivation to accelerate investment will significantly increase.
Intensified competition may ultimately push overall AI investment higher rather than compressing it. In this sense, hyperscale cloud providers remain the financiers of this race, while hardware vendors are the primary beneficiaries.
Technical Setup Nearly "Perfect," But Nearing Climax
From a technical structure perspective, this week presented a rare resonance pattern. Privorotsky pointed out that from a technical standpoint, this week was close to a perfect setup for positioning and, arguably, has reached a climax. Low-to-neutral sentiment indicators—the Bull-Bear indicator remains in neutral territory, and the CNN Fear & Greed Index hovers around 30 due to extremely poor market breadth—combined with expiration effects and the ongoing impact of leverage, collectively magnified price swings in AI and tech sectors.
The same market mechanisms that accelerated the decline weeks ago are now operating in reverse. However, the structural support for this rally is not robust: there is significant downside asymmetry in CTAs currently, combined with gamma roll post-expiration... Institutional sentiment remains subdued, but retail leverage is extremely high. This implies that if momentum reverses, downside could open up rapidly.
Fed Uncertainty Persists, Bond Volatility Poses Upside Risk
On the macro front, the Federal Reserve's meeting this week also cannot be ignored. Although Middle East geopolitics dominated the market narrative, the Fed's influence was still difficult to completely overlook this week. The interest rate curve showed a pronounced flattening trend this week, with front-end SOFR pricing continuing to shift lower, while a few cross-asset relationships have begun to disconnect—the historical linkage between copper prices and the Nasdaq is one example, and the divergence between the small-cap Russell 2000 index and the SFRZ6 (the Dec-2026 3-month SOFR futures contract) is another; these signals are worth noting.
A more critical policy-level variable is the effectiveness of forward guidance. This week featured the first FOMC monetary policy meeting under new Fed Chair Wash. The post-meeting FOMC statement removed forward-looking guidance on interest rates. A Fed policy framework stripped of substantive forward guidance will introduce more uncertainty and ultimately push bond market volatility higher.
For fixed-income investors, this signifies a structural change in the pricing logic for interest rate risk, and the impact of this change has not yet been fully reflected in the markets.
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