The overnight picture

Markets opened Tuesday under pressure from two independent headwinds that are, for now, pointing in the same direction. Iran renewed attacks on commercial vessels transiting the Strait of Hormuz, the narrow waterway through which a significant share of the world's seaborne oil passes, driving a sharp selloff across Asian equity markets. South Korea's Kospi fell 7.6% in the overnight session — one of its sharpest single-day drops in recent memory.

Samsung Electronics (005930.KS / SSNLF) was among the hardest hit, a notable irony given that the company simultaneously reported a quarterly profit that surged roughly 19-fold year-over-year, driven by explosive demand for high-bandwidth memory chips in AI data centers. The result beat analyst expectations by a wide margin. The stock fell anyway — a reminder that macro and geopolitical forces can override even the strongest fundamental prints when regional risk appetite collapses.

In U.S. pre-market trading, futures for the S&P 500, Dow, and Nasdaq reflected the cautious mood. The Hormuz situation is not the only weight on sentiment. Investors are separately reassessing the probability that the Federal Reserve raises its benchmark interest rate again before year-end — a shift that adds a domestic monetary policy headwind on top of the geopolitical one.

Theme one: Hormuz and the oil risk premium

The Strait of Hormuz is one of the world's most consequential energy chokepoints. Any sustained disruption to shipping there ripples quickly through crude benchmarks, LNG prices, and the broader risk appetite of global markets. Iran's renewed targeting of commercial vessels has raised the prospect of U.S. military retaliation, which traders are pricing into oil and risk assets.

The conflict is already showing up in corporate guidance. Shell (SHEL) flagged that its oil and LNG trading results for Q2 will be significantly higher than prior quarters, citing volatility linked to the Iran situation. Shell's full Q2 figures are scheduled for July 30, and that report will offer a detailed read on exactly how much energy traders profited from the disruption. For now, the Hormuz premium is a live variable: any escalation could push crude materially higher, complicating the inflation picture for central banks globally.

The energy story also intersects with the Fed narrative. If Hormuz-driven oil prices push consumer prices higher in the coming months, the Federal Reserve's path becomes harder to read. A central bank that had been expected to hold — or even cut — would face renewed pressure to tighten, extending the current equity headwind.

Theme two: Fed rate-hike risk returns

The second force weighing on Tuesday's session is domestic and monetary. U.S. equities declined as market participants reassessed the likelihood of another Federal Reserve interest rate increase this year. Higher rates raise the cost of capital for businesses, reduce the present value of future corporate earnings, and make bonds relatively more attractive to equity investors — a triple pressure on stock valuations.

The shift in sentiment is notable because it reverses a narrative that had dominated earlier in the year, when many investors expected the Fed's next move to be a cut. No single data release or Fed statement appears to have triggered Tuesday's repricing; rather, the move reflects a broader anxiety that inflation may remain sticky enough to keep policymakers in a cautious posture.

Fixed-income markets will be a critical gauge today. Treasury yields — which move inversely to bond prices — will signal how seriously traders are pricing the rate-hike risk. Investors will also be watching for any Fed communications that clarify the rate outlook following the equity selloff.

The AI supply chain: strong fundamentals, macro headwinds

Set against the bearish macro backdrop, the AI hardware supply chain continues to print strong fundamentals. Samsung's 19-fold profit surge is the latest confirmation that demand for AI data center memory remains robust. The company's results align with a broader pattern: the AI investment cycle is flowing through to hardware suppliers at scale, not just to software developers and model builders.

Broadcom (AVGO) extended its chip supply partnership with Apple (AAPL) through 2031 — a deal that meaningfully improves Broadcom's revenue visibility and deepens its exposure to Apple's custom silicon roadmap. Broadcom's stock responded positively. Analyst Dan Niles separately characterized the recent pullback in AI semiconductor stocks as a temporary setback, citing long-term demand as intact and pointing to Nvidia's next-generation Vera Rubin architecture as evidence that infrastructure buildout continues.

Apple also has a potential near-term catalyst: Niles suggested the company may secure an exemption on China memory tariffs, which would remove a meaningful headwind for iPhone sales in that market. Apple supplier Luxshare Precision priced a Hong Kong listing at the top of its range, raising over $3 billion to expand manufacturing capacity — a signal of continued confidence in Apple's supply chain despite the broader geopolitical noise.

Autonomous systems: Tesla and Visa push the frontier

Two companies moved the needle on AI-driven consumer services Tuesday. Tesla (TSLA) launched a driverless robotaxi service in Miami — its first commercial autonomous ride-hailing deployment — alongside reporting Q2 vehicle deliveries of 480,126 units. The dual announcement draws attention, though analysts are actively debating whether the robotaxi milestone is already reflected in Tesla's valuation. If the Miami operation scales, it represents a structurally different revenue stream from vehicle sales: recurring, software-driven income rather than one-time hardware transactions.

Visa (V) is separately piloting what it calls a Trusted Agent Protocol — a framework that allows AI agents to complete transactions autonomously on behalf of customers. The pilot is running across Europe with partners including eDreams ODIGEO, Cleverbridge, ING, and Worldline, with fraud controls built into the architecture. Both developments reflect a longer-term shift toward autonomous systems handling financial and logistical decisions — a trend with significant implications for payments infrastructure and mobility that will take quarters, not days, to fully price.

The calendar

Shell's full Q2 earnings are scheduled for July 30 and will be the most detailed corporate read on how the Hormuz volatility translated into trading profits. Investors will also be watching closely for any Federal Reserve communications — speeches, minutes, or data-driven signals — that clarify the rate path in the wake of today's equity pressure. Any U.S. government response to the Hormuz attacks, diplomatic or military, could move crude benchmarks sharply and would carry immediate implications for energy stocks and inflation expectations.

Watch list

Crude oil benchmarks are the primary real-time signal for how seriously markets are pricing the Hormuz disruption — watch for any acceleration above recent highs as a trigger for broader risk-off positioning. Treasury yields will indicate whether the Fed rate-hike narrative is gaining or losing traction through the session. Samsung's share price in any after-hours trading will test whether the 19-fold profit beat eventually reasserts itself once the macro noise fades. For Broadcom and Apple, the extended chip deal provides a fundamental anchor, but both remain exposed to the broader rate-sensitivity of growth equities. Tesla's Miami robotaxi operation will be watched for any early operational data that could sharpen the valuation debate.