U.S. Stocks Slide as Hormuz Blockade Shock and Hawkish Fed Talk Jolt Markets; Chip Selloff Deepens

Tide Research — Risk assets retreated sharply after President Trump announced a renewed maritime blockade targeting the Strait of Hormuz. The U.S. military said the operation began Tuesday afternoon, sending crude prices surging. Adding to the shock, Federal Reserve Governor Christopher Waller warned in New York that if core inflation ticks up again in this week's data, the FOMC could move to tighten policy in the near term. Rate expectations repriced immediately: CME data showed the implied probability of a July hike jumping from near zero to almost 50%. The Nasdaq Composite fell 1.55% to 25,873.176, slicing below its 50-day moving average. The Philadelphia Semiconductor Index sank 4.78% to 12,347.784, its weakest level in months. Gold briefly broke below $4,000/oz. In a notable divergence, Apple rose 0.71% to $316.91 and set a fresh intraday record, as money rotated out of semiconductors and AI-linked names into more defensive large-cap positioning. Market snapshot: - S&P 500: -0.79% to 7,515.34 - Dow Jones Industrial Average: -0.26% to 52,498.64 - Nasdaq 100: -1.88% to 29,264.103 - Russell 2000: -0.83% to 2,953.166 - VIX: +14.11% to 17.15 Semiconductors led declines. NVIDIA fell 3.52% to $203.53; Broadcom lost 3.98%; AMD dropped 4.21%; ARM slid nearly 8%; Micron sank more than 7%; SanDisk plunged more than 12%. TSMC's ADR fell 2.88%. SK Hynix's U.S. ADR dropped more than 9%, while its Seoul-listed shares collapsed 15.37%, the largest single-day decline on record. Mega-cap performance was mixed: Microsoft rose 1.53%; Amazon gained 0.80%; Meta fell 1.86%; Tesla slid 3.19%; Alphabet (Class A) lost 1.31%. The Magnificent Seven Index declined 0.96%. In ETFs, the semiconductor ETF dropped 4.16% and the global tech stock index ETF fell 2.88%, while the energy sector ETF gained 3.03%. Commodities and crypto reacted forcefully. WTI crude jumped nearly 10% to its highest in almost a month, finishing above its 50-day moving average. Spot gold fell more than 3% to $3,992.48, breaking the key $4,000 support level; spot silver also weakened. Bitcoin slid more than 3%, briefly dipping below $62,000; Ethereum fell about 3%. Rates and FX tightened financial conditions. The 2-year U.S. Treasury yield rose 6 basis points to 4.28%. The 10-year real yield climbed to 2.34%, the highest since April last year. The U.S. Dollar Index rose more than 0.5% from its intraday low. Macro and outlook Trump said the U.S. is reinstating a maritime blockade on Iran and will impose a 20% toll on goods shipped through the Strait of Hormuz. U.S. Central Command confirmed the blockade began Tuesday afternoon. After the announcement, commercial traffic through Hormuz fell to three vessels per 24 hours, a record low, as shippers avoided the area amid heightened risk. Goldman Sachs' base case sees Brent fluctuating between $75 and $85, but warns that a direct U.S. strike on maritime energy infrastructure or simultaneous disruptions across multiple key straits could push prices above $100. Waller's comments reshaped expectations around the Fed's patience. He said "inflation has been rising this year by any measure" and flagged concern about the trajectory of core inflation. Markets focused less on the absolute level of real yields and more on the speed of the move. The 10-year real rate has risen from 2.11% at end-June to 2.34%, approaching a widely watched 2.40% threshold. A fast break above 2.40% could pressure equities broadly, while higher real rates also boosted the dollar and weighed on gold. AI spending doubts intensify Investor concern has broadened from near-term AI demand to the durability of the entire capex cycle. South Korea's equity market dropped 8.95% and is down 27% from its June high; the stress spilled into U.S. trading, accelerating selling in AI infrastructure providers and chipmakers. SK Hynix's record one-day drop is being read as a sign that markets expect a sharp cooling in memory demand. Apple's relative strength has attracted heavy inflows. The stock has risen in 13 of the past 16 weeks and is roughly 5% away from overtaking NVIDIA as the world's most valuable company. Interpretations diverge: fundamental analysts point to the autumn upgrade cycle and steady gross margins, while technical analysts see a defensive rotation from higher-volatility tech into lower-volatility assets, with money shifting away from bearish memory names toward Apple's strong balance sheet. Tide view The selloff reflects a two-front hit: geopolitics pushed oil to fresh highs as the Hormuz blockade became operational, and Waller's remarks shifted rate-hike risk from theoretical to actionable. In that setting, the chip rout is being driven by a growing consensus that AI investment expectations may have run too far. Apple's rally may be less about new growth optimism and more about capital seeking safety. Whether the rotation holds depends on next quarter's earnings season and whether companies are truly cutting back AI spending. If results show continued increases in AI investment, Apple's outperformance could prove temporary, with flows rotating back into semiconductors. The next key catalyst is Wednesday's CPI release. A renewed acceleration in inflation would make Waller's warning harder to dismiss, likely intensifying hike expectations and leaving room for further downside in U.S. equities.