Inflation Hit 3.8%. Chips Finally Broke.

GOOD MORNING, Tuesday finally gave the AI rally a macro number it could not ignore. April CPI rose 0.6% month over month and 3.8% from a year earlier, the hottest annual pace in nearly three years, while oil climbed again as the U.S.-Iran ceasefire moved closer to collapse. The S&P 500 slipped 0.15% and the Nasdaq fell 0.7%, but the real damage was in semiconductors: the chip index dropped 3% after a huge run. The market is not questioning AI demand. It is questioning how much multiple investors should pay for that demand if inflation keeps the Fed restrictive.

MARKETS | TLDR

The Nasdaq pulled back from record highs: The Nasdaq fell 0.70%, the S&P 500 lost 0.15% and the Dow rose 0.14% as hotter inflation hit growth stocks hardest.
Semiconductors dropped 3%: The PHLX Semiconductor Index gave back part of its extraordinary year-to-date gain as investors took profits from one of the market’s most crowded AI trades.
Oil rose for a third straight session: Brent settled at $107.77 and WTI at $102.18 as peace hopes faded and Hormuz remained effectively closed.

INFLATION

3.8% CPI Just Raised the Bar for Every Growth Stock

April CPI rose 0.6% from March and 3.8% from a year earlier, up from 3.3% in March and above the 3.7% consensus. Energy prices rose 3.8% in the month and accounted for more than 40% of the headline increase, while shelter rose 0.6% and food increased 0.5%.

Core CPI also rose 0.4% month over month and 2.8% year over year. That is not an inflation profile that gives the Fed much room to cut, especially with the energy shock still worsening. The market reaction was exactly what you would expect: Treasury yields rose, the dollar strengthened and long-duration technology stocks underperformed.

The read-through for AI is simple. The earnings story can stay strong while valuations compress if the discount rate rises. After months of rewarding every sign of stronger AI demand, investors are now being reminded that the present value of those future cash flows still depends on inflation and policy. The hotter CPI print did not break the AI thesis. It made the valuation hurdle materially higher.

SEMICONDUCTORS

The AI Trade Just Learned That Great Demand Can Still Be Overpriced

The Philadelphia Semiconductor Index fell 3% Tuesday after a spectacular run that had left it up more than 65% for the year. Intel dropped sharply after surging more than 17% across the prior two sessions, while several other chip names also gave back recent gains.

That matters because the selloff was not driven by a collapse in AI demand. Analyst price targets on Nvidia, AMD and Broadcom were still being raised, and the sector’s revenue backdrop remained extremely strong. The problem was positioning and the macro overlay: after such a steep rally, hotter inflation and higher yields gave investors a reason to take profits.

This is the phase where differentiation matters more. Nvidia, AMD, Broadcom and Intel can all benefit from AI, but not equally, and not at any price. As the cycle matures, the market will care more about margins, competitive position and the durability of hyperscaler spending — not just whether AI demand is growing.

HEADLINES

Brent settled at $107.77: The 3.4% gain extended oil’s rise to a third session as Trump said the ceasefire was “on life support” and negotiations remained deadlocked.
Hormuz remained effectively closed: The EIA expected the chokepoint to stay largely shut through late May, keeping a structural supply deficit in place even before inventories were fully depleted.
Energy drove more than 40% of the monthly CPI increase: The data directly connected the Iran conflict to U.S. inflation rather than leaving it as a purely geopolitical market risk.
Humana jumped 7.7%: A large price-target increase helped healthcare offset some of tech’s weakness, another sign that market leadership was broadening away from AI momentum.
The chip index was still up 65.4% for the year: Tuesday’s drop looked more like a valuation reset than a rejection of the AI demand cycle.

UPCOMING

U.S. PPI — May 13: Producer prices are the next inflation test and will show whether cost pressure is still building earlier in the supply chain.
U.S. retail sales — May 14: Consumer spending will show whether households are absorbing higher energy and goods prices or beginning to pull back.
Import and export prices — May 14: Trade-price data will provide another read on how tariffs, oil and supply disruption are feeding into domestic inflation.
Nvidia earnings — May 20: Nvidia will be the next major test of whether AI earnings growth remains strong enough to offset a much less friendly rate backdrop.

DEEP INSIGTHS

U.S. Consumer Prices Increase Further in April

Read this for the full inflation transmission. Energy drove a large share of the monthly increase, but price pressure was broad enough to reach food, shelter and services. The important question for markets is whether the oil shock stays temporary or becomes embedded in wages, spending and expectations.

Trading Day: Inflation Up, Chips Down

This is the cleanest cross-asset frame for Tuesday. Hotter CPI, higher oil and rising bond yields hit semiconductors after a huge run, while the broader indexes held up relatively well. The day showed that AI can remain the strongest earnings theme in the market and still be the first place investors take risk off when the macro discount rate moves against them.