--- title: "Who will end the AI bull market: position size or narrative?" type: "News" locale: "en" url: "https://longbridge.com/en/news/286386277.md" description: "The current AI bull market faces risks from both position size and narrative. Analyst Jon-Patrick Barnert notes that while the market rally is strong, it is crowded with long positions, and the reasons for shorting are unclear. Goldman Sachs' Risk Appetite Indicator suggests a potential pullback, as many sectors are overbought. Despite strong corporate profits and easing recession fears, the market's reliance on AI raises concerns about sustainability. A sudden negative catalyst could trigger significant declines, particularly in the semiconductor sector, highlighting the fragility of the current market dynamics." datetime: "2026-05-14T08:47:37.000Z" locales: - [zh-CN](https://longbridge.com/zh-CN/news/286386277.md) - [en](https://longbridge.com/en/news/286386277.md) - [zh-HK](https://longbridge.com/zh-HK/news/286386277.md) --- # Who will end the AI bull market: position size or narrative? The more rapidly the market rises, the harder it is to find a reason to fall—but the risks haven't disappeared, they've just become more deeply hidden. On May 14th, Bloomberg market analyst Jon-Patrick Barnert pointed out that the current US stock market rally has clearly accelerated, but the cost and timing of short selling remain difficult to grasp. Even more problematic is that the very reason to short has become blurred. The core contradiction of this market rally is that positions are extremely crowded, but the fundamental narrative—especially AI—continues to support market sentiment. Which will collapse first? Positions: The market is close to being "fully long." From a purely price movement perspective, the pullback signals are quite clear. The S&P 500's six-week winning streak is not only one of the longest in over 70 years, but also among the strongest in history. Barnert stated that a "breathing room" is perfectly normal for this market. Goldman Sachs' Risk Appetite Indicator has risen back to 1, the first time since the beginning of the year. A reading above 1 is extremely rare and historically often foreshadows a potential pullback. The last time this threshold was breached was in 2021, after which the market entered a bear market. Looking at the most popular themes, Barnert describes this as a market where "everything is overbought," with some of the hottest sectors reaching extreme levels of overbuying. The combined effect of mechanical capital inflows—currently appearing to be at or near maximum long positions—creates a picture of limited upside potential and significant potential pressure from position rebalancing. However, shorting is not easy. Barnert points out that position adjustments can be completed within a single day, making it extremely difficult to time entry and exit points for short positions. Furthermore, if the market chooses a "slow decline," volatility positions will quietly become ineffective in a mild environment. A more likely scenario is that overall sentiment remains bullish, and once short covering is forced, it could trigger a new round of short squeeze, with prices rising faster than anyone expected. The capital flows of some popular ETFs have begun to show subtle changes—a tendency towards "locking in profits" rather than "chasing highs." However, Barnert also admitted that this trend has persisted for several weeks and has not yet had a substantial impact on market movements. Narrative: Without AI, the market is nothing. If position sizing is a technical concern, the narrative currently appears more solid. Barnert points out that there is a lack of clear signals triggering a fundamental bear market. Corporate profits remain strong, and inflation expectations have risen slightly but not to extreme levels. The market has already priced in the impact of high oil prices and the Middle East situation, and the latest US employment data has eased recession fears. As for interest rate hike expectations, they are no longer a catalyst suppressing the stock market. However, one issue cannot be ignored: the concentration of this market rally has become highly concentrated on "concentration itself." Barnert points out that whether comparing the performance of indices with and without AI, or analyzing the contributors to the gains since March, the conclusions all point to the same thing: without AI, the market's performance can only be described as "mediocre." More notably, the semiconductor sector alone contributed nearly 40% of the gains since March. The market narrative surrounding AI has once again entered a "greedy mode," rather than a stage of rationally pursuing reasonable returns. Concerns that were hotly debated just a few months ago—whether AI computing costs can be covered by layoffs, data center energy supply bottlenecks, AI pricing wars eroding profit margins, new competitors disrupting the existing landscape with lower costs, a surge in capital expenditures while stock buybacks stagnate, and AI security risks—now seem to have been collectively forgotten by the market. The risk of a repeat of the "DeepSeek moment"—Nomura Securities strategist Charlie McElligott has issued the most direct warning on this. He stated, "Given the current market structure and highly overlapping themes, if another explosive 'DeepSeek' catalyst emerges, it could very well trigger a Nasdaq Level 1 limit-down." McElligott further pointed out that in this scenario, the semiconductor ETF could easily experience a 15% drop in a single day—because "the hypothetical reversal of reflexive mechanical fund flows will create a large-scale overshooting decline." In other words, it is precisely those mechanical funds that continuously add to the buying during the upward trend (such as CTA strategies and risk parity funds) that, once a reversal is triggered, will become amplifiers accelerating the decline. This round of AI bull market faces two major risks: one is technical (overcrowded positions), and the other is narrative-driven (whether the AI ​​story can be sustained). The former could be triggered at any time, while the latter, once broken, will have a deeper impact. The combination of these two factors constitutes the most alarming structural vulnerability in the current market. ### Related Stocks - [SOXQ.US](https://longbridge.com/en/quote/SOXQ.US.md) - [SOXS.US](https://longbridge.com/en/quote/SOXS.US.md) - [AIQ.US](https://longbridge.com/en/quote/AIQ.US.md) - [512480.CN](https://longbridge.com/en/quote/512480.CN.md) - [SMH.US](https://longbridge.com/en/quote/SMH.US.md) - [XSD.US](https://longbridge.com/en/quote/XSD.US.md) - [SOXX.US](https://longbridge.com/en/quote/SOXX.US.md) - [CHPX.US](https://longbridge.com/en/quote/CHPX.US.md) - [PSI.US](https://longbridge.com/en/quote/PSI.US.md) - [ARTY.US](https://longbridge.com/en/quote/ARTY.US.md) - [588780.CN](https://longbridge.com/en/quote/588780.CN.md) - [GS.US](https://longbridge.com/en/quote/GS.US.md) - [NMR.US](https://longbridge.com/en/quote/NMR.US.md) - [8604.JP](https://longbridge.com/en/quote/8604.JP.md) - [.SPX.US](https://longbridge.com/en/quote/.SPX.US.md) - [NDAQ.US](https://longbridge.com/en/quote/NDAQ.US.md) - [QQQ.US](https://longbridge.com/en/quote/QQQ.US.md) - [W4VR.SG](https://longbridge.com/en/quote/W4VR.SG.md) ## Related News & Research - [SanDisk stock is in a bull run — but RSI says a pullback may be near](https://longbridge.com/en/news/286099962.md) - [Cathie Wood Just Bet $46 Million on a Newly Public AI Chip Stock. Should You Follow Her?](https://longbridge.com/en/news/286991566.md) - [SambaNova and Intel’s heterogeneous x86 AI architecture](https://longbridge.com/en/news/286873696.md) - [Exaforce Raises US$125M Series B to Expand AI-Native Security Operations Platform](https://longbridge.com/en/news/286193730.md) - [Where Will Sandisk Stock Be in 5 Years?](https://longbridge.com/en/news/286990821.md)