The downside of high expectations thumped Wall Street on Thursday, and Microsoft and Meta Platforms dragged U.S. stock indexes lower despite delivering strong profits for the summer.

The S&P 500 sank 1.9% for its worst day in eight weeks and fell further from its record set earlier this month. The Dow Jones Industrial Average dropped 378 points, or 0.9%, while the Nasdaq composite tumbled 2.8% for a second straight loss after setting its latest all-time high.

Microsoft reported bigger profit growth for the latest quarter than analysts expected. Its revenue also topped forecasts, but its stock nevertheless sank 6% as investors and analysts scoured for possible disappointments. Many centered on Microsoft’s estimate for upcoming growth in its Azure cloud-computing business, which fell short of some analysts’ expectations.

The parent company of Facebook, meanwhile, likewise served up a better-than-expected profit report. As with Microsoft, that wasn’t enough to boost its stock. Investors focused instead on Meta Platforms’ warning that it expects a “significant acceleration” in spending next year as it continues to pour money into developing artificial intelligence. It fell 4.1%.

Both Microsoft and Meta Platforms have soared in recent years amid a frenzy around AI, and they’re entrenched among Wall Street’s most influential stocks. But such stellar performances have critics saying their stock prices have simply climbed too fast, leaving them too expensive. It’s difficult to meet everyone’s expectations when they’re so high, and Microsoft and Meta were both among Thursday’s heaviest weights on the S&P 500.

Amazon and Apple also helped drag the market lower, with Amazon falling 3.4% and Apple dropping 2% before they released their profit reports after trading ended for the day. They’re the latest companies in the highly influential group of stocks known as the “Magnificent Seven” to do so.

Earlier this month, Tesla and Alphabet kicked off the Magnificent Seven’s reports with results that investors found impressive enough to reward with higher stock prices.

The lone remaining member, Nvidia, will report its results later this earnings season, and its 4.8% drop was Thursday’s heaviest weight on the market after Microsoft. Expectations are just as high for the chip company after its stock soared over 880% in the last two years.

The tumble for Big Tech on the last day of October wiped out the S&P 500’s gain for the month. The index fell 1% for its first down month in the last six, even though it set an all-time high during the middle of it.

Such a big move might have been overdue following an unusually long and placid run, according to Jonathan Krinsky at BTIG. He pointed to how the S&P 500 had failed to move by 1% in a day in either direction, without accounting for rounding, for the longest stretch in nearly three years.

Still, Thursday wasn’t a complete washout thanks in part to cruise ships and cigarettes.

Norwegian Cruise Line Holding steamed 6.3% higher after delivering stronger profit for the latest quarter than analysts expected. The cruise ship operator said it was seeing strong demand from customers across its brands and itineraries, and it raised its profit forecast for the full year of 2024.

Altria Group rose 7.8% for another one of the S&P 500’s bigger gains after beating analysts’ profit expectations. Chief Executive Billy Gifford credited resilience for its Marlboro brand, among other things, and announced a cost-cutting initiative.

One report said a measure of inflation that the Federal Reserve likes to use slowed to 2.1% in September from 2.3%. That’s almost all the way back to the Fed’s 2% target, though underlying trends after ignoring food and energy costs were a touch hotter than economists expected.

A separate report said growth in workers’ wages and benefits slowed during the summer. That could put less pressure on upcoming inflation. A third report, meanwhile, said fewer U.S. workers applied for unemployment benefits last week. That’s an indication that the number of layoffs remains relatively low across the country.

In stock markets abroad, indexes sank across much of Europe and Asia.