AMD Beat Earnings But Fell 8% After Hours - So Why Did Palantir Jump 29% on the Same Day?

What Happened

On August 4, two AI-linked stocks reported earnings on the same day and got opposite market reactions.

AMD posted record second-quarter revenue of $11.54 billion, beating estimates, with adjusted EPS of $1.66 versus a $1.62 consensus. It guided third-quarter revenue to roughly $13 billion, above what Wall Street had penciled in, and data center revenue jumped 107% year-over-year to $6.7 billion. By any conventional measure, this was a clean beat-and-raise quarter. Yet AMD shares fell roughly 8% in after-hours trading.

Palantir, reporting the same day, told the opposite story. Revenue came in at $1.94 billion against a $1.8 billion estimate, adjusted EPS hit $0.41 versus $0.35 expected, and U.S. commercial revenue grew 149% year-over-year. The company raised its full-year revenue guidance from a prior range of $7.65-7.66 billion to $8.16 billion. CEO Alex Karp called it an "otherworldly" quarter, and the stock jumped about 29% in a single session.

Both companies beat estimates and raised guidance. So why did one stock crater and the other soar?

Same "Beat," Opposite Read

The key isn't how good the numbers were in isolation — it's how much better the market had already been pricing in.

• AMD: expectations had outrun the fundamentals. Going into earnings, AMD shares had already run up sharply on news like its large deal with Anthropic. Options markets were pricing in a post-earnings move of 10-12%, and investors were reportedly looking for a hotter "whisper number" than even the official beat delivered. On top of that, capital expenditures hit $808 million — nearly triple what analysts had modeled — and free cash flow fell to $1.56 billion from $2.57 billion in Q1. In other words: profits grew, but so did the cost of generating them, and that combination triggered profit-taking.
• Palantir: growth itself accelerated. Palantir's revenue growth rate (93% overall, 149% in commercial) actually sped up from the prior quarter. For a company already growing fast to accelerate further flips the market's "growth is peaking" script on its head. Combined with the guidance raise, it told investors this company's growth story isn't done yet.

Two names in the same "AI winner" bucket can move in completely opposite directions depending on whether results represent improvement or acceleration — and how high the bar was set before the print.

What to Take Away From This

• "Good earnings" and "the stock goes up" are not the same claim. As with Apple's tariff-refund case (see our August 3 article), headline numbers alone don't predict the stock reaction. Always check where expectations stood before the print — implied volatility from the options market, and how far the stock had already run.
• The direction of spending matters as much as the earnings themselves. When revenue and profit both grow but capex or free cash flow deteriorates by more than expected, as with AMD, the market can read it as margin being sacrificed for growth.
• Accelerating growth earns a premium. As Palantir showed, an already-fast-growing company that grows even faster can see its stock react sharply despite an already-rich valuation. Conversely, any sign of deceleration tends to hurt the stock even when the absolute numbers still look strong.
• Don't lump sector peers together. Treating "AI stocks" as one homogeneous group makes it easy to miss reactions this divergent on the same earnings day.

Sources

This article synthesizes and analyzes the reporting below in our own words — it is not a reproduction of the original text. For the latest figures and full detail, please refer to the original sources.

• AMD Earnings Beat Estimates and Stock Falls 8%: Was the Bar Too High? - BeInCrypto
• Palantir stock rises 29% on soaring commercial revenue, AI sovereignty - CNBC
• Palantir stock jumps nearly 30% after 'otherworldly' quarter as US commercial business booms - Yahoo Finance

Related reading: Why Apple Fell Even as the Fed Held Rates Steady covers another case of "good earnings, falling stock."

⚠️ This article is for informational purposes only and is not investment advice. Market conditions change constantly — always verify the latest data yourself before making any investment decision.