George Noble
Investment Writer, Former Fund Manager at Fidelity, Former Assistant to Peter Lynch
The Strait of Hormuz closure threatens semiconductor supply through helium, which chipmakers need to cool wafers and cannot substitute. Qatar produces a third of the world's helium, and Iranian strikes damaged Ras Laffan while exports are trapped behind Hormuz; spot prices have doubled. South Korea gets 55% of its helium from the Gulf and Taiwan 69%. SEMI says normalizing supply would take 4-6 months even if the Strait reopened, yet markets price the crisis as temporary. x.comÂ
Semiconductor stocks are at a cyclical peak, because obscene profits draw innovation that competes them away. Google's TurboQuant algorithm cuts AI memory needs by 6x, and Micron lost $90 a share in a week, down over 20% from its $471 high. Its price-to-book was the highest in its history, masked by a low P/E on far-above-trend earnings. Despite a phenomenal quarter, it fell daily after reporting as the market weighed $650B of AI capex against efficiency gains. x.comÂ
Semiconductor stocks face a few months of volatility and pullbacks from a helium shortage, as Qatar supplies about a third of global helium and the Middle East conflict is tightening supply. Helium is critical to chipmaking, so this brings supply-chain stress and headline-driven selling. Big AI, data-center and advanced-chip players will get priority, so production continues at higher cost. Longer term, the constraint reinforces the AI cycle by making high-end chips more valuable. x.comÂ
Slowing AI capital spending keeps the semiconductor growth scare in play. Meta's cash flow is negative and Lam Research's capex is slowing, further evidence as the sector faces a growth-to-value rotation and a Fed pause next week. x.comÂ
Semiconductors could stay undersupplied for a long time as more capable AI per dollar creates more uses and drives compute demand. Micron and NVIDIA trade at low forward P/Es because investors fear peak cyclical earnings, yet current earnings show no slowdown. Shortages may worsen as AI adoption spreads, though the industry could remain cyclical; a reversal of the forced rollover trade is hoped for, not assured. x.com x.com x.comÂ
Linde, the dominant global supplier of semiconductor-grade helium, stands to surge as the Strait of Hormuz conflict chokes helium supply. A third of world helium supply is stuck in the strait, and Qatar's Ras Laffan, one of only two plants making semiconductor-grade helium, was hit by missiles in early March and may take years to rebuild. The largest industrial gas companies have told chipmakers they cannot guarantee supply, putting a speed limit on AI. x.com x.com x.com x.com x.com x.comÂ
Semiconductor trade faces a capex growth ceiling even if AI delivers what bulls expect. Spending cannot compound at 70-100% a year indefinitely, and compute per dollar roughly doubles every two years, so the same budget buys more capacity later. Today's chip valuations also demand years of 20% AI earnings growth beyond 2028: roughly 10.9 extra years for AMD, 8.9 for ASML, 7 for Marvell and 6.4 for TSMC, versus 1.6 for Broadcom and 0.8 for Nvidia; Micron needs none under the chart's assumptions. … Show more
Semiconductor stocks have not priced in a record wave of AI chip demand. Taiwan chip exports jumped over 20% in a single month and demand is 30% above three months earlier, the biggest in history, while Korea is also seeing record semiconductor demand, up 30% on mid-2026. A step change in demand comes while semis are still cheaper than before the AI boom. x.com x.com x.com x.comÂ
Semiconductor stocks' easy-money phase is over as the sector shifts from hype to show-me-the-money. The SOX index is down over 15% from its June peak, chip funds saw $11B of outflows in one week, the largest this century, short interest is at a three-year high and earnings growth is projected to slow by 2027. Memory and logic chips remain commodity-like. This is cyclical cooling, not a death knell; the AI build-out continues, but expect more turbulence and favor companies with defensive moats. … Show more
Tight memory supply keeps the AI memory supplier trade in bill-of-materials names if it persists. The investor aleabitoreddit reports an SK hynix shortage outlook through 2030 and an operating-margin result near 80%. HBM allocation and average-selling-price guidance are the next tests; Korea has already priced the earnings print, so the next move depends on who locks capacity. x.comÂ
Semiconductor demand could withstand slower OpenAI and Anthropic growth if open-source models and post-training add more chip demand than it removes. Falling token prices need not erode per-GPU economics as cost per token falls and output per GPU rises, potentially keeping rental rates firm. The balance is unresolved; the lean is bullish, but markets may focus on the easier-to-see slowdown. Shares could chop until numbers defeat the bears, or a well-founded bear case could trigger heavy selling. … Show more
Semiconductors risk a telecom-style bust if AI capex merely flatlines rather than falls. Telecom investment did not decline after 2001; it stopped growing for 25 years, and investors took a bath as stocks priced for growth stalled and margins compressed. Today's $1 trillion-plus of annual investment rests largely on startups' projections of about 10x growth, and xAI and Meta already found less demand than expected. GPUs must run while they hold value, so no analogy is perfect. x.com x.com x.comÂ
