Apple's Record Quarter Can't Stop the Sell-Off as Margin Guidance Slips

Apple's September-quarter numbers were strong by almost any measure, and the stock still fell. The company beat Wall Street expectations on the top and bottom lines, but investors went straight to the forward-looking numbers, and those pointed to tighter profit margins heading into the holiday season. For a company valued near $4.9 trillion, that shift in focus was enough to wipe out a meaningful slice of market value in a single session.

A beat on the headline numbers

Apple reported fiscal fourth-quarter revenue of $114.5 billion, up 12% from a year earlier. That came in ahead of the roughly $113.4 billion consensus. Diluted earnings per share landed at $2.10 against an estimate of $1.99, though the company's results were helped in part by tariff refunds, which is worth keeping in mind when comparing the quarter with its peers.

The iPhone was the engine. Revenue from the device reached a September-quarter record of $57.58 billion, up about 17%, even though the iPhone 18 Pro models had a staggered launch and only limited sales in the period. Services hit an all-time high near $31.6 billion, and Mac sales climbed roughly 24%. iPad and Wearables declined, which the company tied to tough year-over-year comparisons and supply constraints. For the full fiscal 2026 year, Apple reported revenue of about $479 billion, a company record.

None of that looks like a business in trouble. The trouble, if there is any, sits in what comes next.

Why the guidance mattered more than the beat

Shares closed Monday at $338.32 and dropped as much as roughly 4% in after-hours trading. By Tuesday premarket they were near $325, a decline that would erase more than $170 billion in market value if it held. The drop tracked the guidance far more closely than the quarter itself.

Apple projected December-quarter revenue growth of 7% to 10%. That range was ahead of expectations and would, by the company's own framing, be an all-time record period. The problem was gross margin. Apple guided to 45% to 46%, down from 47.9% in the September quarter and below the roughly 47% analysts had pencilled in. Services growth was forecast at 8% to 9%, short of the roughly 10.7% that analysts expected.

So the company is guiding to more revenue and a thinner margin, with its highest-margin software and subscription line growing more slowly than the Street wanted. For a stock that trades near 35 times forward earnings, that combination is hard to shrug off.

New CEO, new cost pressure

This was John Ternus's first earnings discussion as chief executive, and he didn't soften the picture. He described the memory-pricing environment as "unprecedented," said costs were already higher than in the prior quarter, and warned they would climb further into the December period. Apple had been carrying cheaper component inventory, and that advantage is fading. Memory is also being pulled toward AI infrastructure build-outs, which means Apple is competing for supply with some very well-funded buyers.

The ramp of AI-powered Siri features adds a second margin headwind. Neither issue is a surprise in isolation, but together they explain why the margin guide landed where it did.

My read is that Ternus is trying to set expectations early. A new chief executive who delivers a clean beat and then warns about costs is buying room to manage the next few quarters without being accused of hiding the ball. Whether investors accept that framing will depend on what happens to component prices over the next two quarters.

What analysts are actually worried about

Analysts generally praised the hardware side. The iPhone franchise remains the anchor of the ecosystem, and its resilience is what allowed Apple to post these numbers despite the cost environment. The concern is everything around it. Several observers said non-iPhone businesses aren't yet carrying their share of growth, and that elevated costs combined with a premium valuation leave little margin for error.

Some also pointed to a Greater China result that fell short of certain forecasts. Beyond Apple's own books, there's a broader question about consumer cost-of-living pressure. If households are stretched, Apple's ability to pass higher component prices on to buyers becomes less certain, and that's the risk that matters most for a company whose pricing power has long been a core part of its story.

Apple, for its part, continues to point to its large installed base, pricing power and product pipeline, including the recently announced iPhone Duo foldable and other launches. Those are real strengths, and they're the reasons many long-term holders stay put through drawdowns like this one.

The pattern and what to watch

This is a textbook reaction for a high-multiple tech stock. Strong results count for less than the next-quarter outlook, and any sign of profit compression can overshadow a quarter that looks excellent on paper. The timing makes it sharper: the holiday season is the period Apple has guided to be its biggest yet, and it's arriving alongside persistent supply-chain strain and heavy AI-related spending across the industry.

The question for the next few reports is whether the margin pressure is a temporary squeeze from memory pricing or something more structural. If gross margin recovers toward the high 40s once component costs settle, this drop will look like a reaction to a worst-case guide. If it doesn't, investors will have a stronger case for repricing a company that has leaned on margins as much as on volume. For buyers, the stakes are less about the stock and more about whether Apple keeps prices stable as its costs rise.