Oil Jumped 10%. Chips Cracked First.

GOOD MORNING, Monday gave markets two reasons to de-risk at once. Brent crude jumped almost 10% after the U.S. reinstated a blockade on Iranian ports and tensions around the Strait of Hormuz escalated, pushing Treasury yields higher on renewed inflation fears. At the same time, the AI trade took another hit: SK Hynix plunged more than 15% in Seoul, U.S. chip stocks sold off and the Nasdaq dropped 1.6%. The awkward part is that AI demand still looks exceptionally strong. TSMC just reported record quarterly revenue. The problem is that prices had already assumed a lot of that strength.

MARKETS | TLDR

The Nasdaq led Wall Street lower: The Nasdaq fell 1.55%, the S&P 500 lost 0.79% and the Dow dropped 0.26% as chipmakers and other AI-linked names sold off.
Oil surged on renewed U.S.-Iran escalation: Brent jumped 9.6% to $83.30 after Washington reinstated a blockade on Iranian oil traffic and both sides claimed control around the Strait of Hormuz.
Treasury yields rose with inflation risk: The 10-year yield climbed to roughly 4.61% as investors worried that another energy shock could force central banks to keep policy tighter for longer.

CHIPS

The AI Trade Just Found Its Expectations Problem

U.S. semiconductor stocks entered the week already under pressure. The Philadelphia Semiconductor Index had fallen more than 11% from its June record even though it was still up 83% for the year. Monday made the divergence harder to ignore: SK Hynix plunged more than 15% in Seoul, Micron fell 6.4%, SanDisk dropped 8.4% and the broader U.S. chip index lost another 3.6%.

The problem is not weak AI demand. TSMC reported record second-quarter revenue of T$1.27 trillion, up 36% from a year earlier, while global cloud and AI infrastructure capex is expected to approach $1.5 trillion by 2027. The issue is that the market had already priced in years of extraordinary growth, making even strong fundamentals vulnerable to profit-taking, fund outflows and questions about how long hyperscaler spending can keep accelerating.

That changes what earnings need to prove. Investors no longer need another reminder that AI infrastructure demand is real. They need evidence that margins, pricing and capital returns can keep growing fast enough to justify valuations that ran far ahead of the broader market. The AI trade still has exceptional fundamentals. It also has less room for ordinary good news.

OIL

A 10% Oil Move Just Put Inflation Back in Charge

Oil prices surged Monday after President Donald Trump said the U.S. would reinstate a blockade on Iranian ports following another weekend of heavy U.S.-Iran airstrikes. Brent gained almost 10%, while restrictions around the Strait of Hormuz again threatened one of the world’s most important energy routes.

The market transmission was immediate. Energy stocks rose, but the broader equity market fell and Treasury yields climbed as investors priced the possibility that higher fuel costs could broaden into more persistent inflation. Markets were already expecting at least one 25-basis-point Fed hike by year-end, and the renewed oil shock gave this week’s CPI and PPI data even more weight.

The key caveat is that geopolitical oil spikes can reverse quickly. But the inflation risk does not need Brent to stay at crisis highs forever. Higher shipping, insurance and fuel costs can feed into goods and services prices with a lag, making today’s oil move relevant to monetary policy even if crude prices eventually cool.

HEADLINES

TSMC posted record second-quarter revenue: Revenue rose 36% year over year to T$1.27 trillion, slightly above expectations, reinforcing that AI demand remains powerful even as chip valuations come under pressure.
SK Hynix suffered its biggest one-day fall in nearly two decades: Shares fell more than 15% in Seoul after last week’s Nasdaq debut, highlighting how quickly leverage, profit-taking and supply concerns can reverse a crowded memory-chip trade.
The KOSPI plunged about 9%: The selloff triggered a 20-minute trading halt, showing how concentrated Korea’s market has become around AI memory and semiconductor exposure.
Energy stocks were the only clear winners from the Iran escalation: Higher crude lifted the sector even as the same move worsened inflation and rate expectations for the rest of the market.
S&P 500 earnings expectations kept rising: Analysts expected second-quarter earnings growth of 23.7% year over year, up from 19.2% at the start of April, leaving valuations — not profit expectations — as the more immediate market constraint.

UPCOMING

U.S. CPI — July 14: Consumer inflation is the week’s biggest macro test after Monday’s oil shock pushed Treasury yields higher and revived concern about another Fed hike.
Major bank earnings — July 14: JPMorgan, Goldman Sachs, Citigroup, Bank of America and Wells Fargo begin the core of earnings season, offering a read on trading, dealmaking and credit quality.
U.S. PPI — July 15: Producer prices will show whether inflation pressure is also building earlier in the pipeline.
TSMC earnings — July 16: After reporting record revenue, TSMC will update investors on profit growth, advanced-node demand and the capital spending needed to keep serving the AI boom.

DEEP INSIGTHS

Chip Stocks Hit a Rocky Patch. What’s Next?

Read this for the valuation setup behind Monday’s selloff. The Philadelphia Semiconductor Index was still up 83% for the year even after its pullback, while funds had just recorded the largest weekly semiconductor outflow this century. The key question is not whether AI demand remains strong, but how much future growth investors had already paid for.

SK Hynix Plunges After Nasdaq Debut as Memory-Chip Euphoria Cools

This is the clearest example of how leverage and expectations can amplify AI volatility. SK Hynix remains the global leader in high-bandwidth memory, and management argues shortages could persist for years. Yet the stock still suffered its biggest one-day drop in nearly two decades as investors took profits and worried that fresh capacity in 2027–28 could eventually pressure memory pricing.