Tim Cook's Last Earnings Call Ended in a $475B Apple Wipeout

Amazon closed up roughly 15% at $270.90 on Friday while Apple sank 9.7% to $301.12 — its worst single-day drop since March 2020 — erasing about $475 billion in market value in one session, and the split happened on the same earnings day, from a market cap that stood near $4.9 trillion just a day earlier.

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What happened

Amazon delivered earnings of $5.75 per share against a consensus of $1.82, on revenue of $200.6 billion, with AWS growing 37% — its fastest pace in 18 quarters. Investors rewarded that combination with the stock's best earnings-day pop in years.

Apple's headline numbers actually beat estimates: record fiscal third-quarter revenue of $109.4 billion, up 16% year over year, with iPhone sales climbing 21.7%. The stock still cratered because of what came next — guidance. Apple projected September-quarter revenue growth of just 9% to 11%, down sharply from the 16% it just posted and below the roughly 12% Wall Street was modeling. CEO Tim Cook told analysts the company is facing "a 100-year flood on the memory pricing with exponential increases in memory prices," forcing Apple to raise prices on products it didn't want to touch. Notably, it was Cook's final earnings call as chief executive — he moves to executive chairman on September 1, with hardware chief John Ternus stepping in as CEO.

Why it matters

Despite Apple absorbing the steepest single-stock drop among Dow components, the index still climbed 253 points, or 0.5%, to 52,461, cushioned by Amazon's surge. The Invesco QQQ Trust added 0.4%. That's the same dynamic I flagged in Amazon Jumps 15%, Apple Sinks 7% — Nasdaq Still Gains 1%: one mega-cap's earnings beat can now outweigh another's guidance miss at the index level, because both companies carry enough weight to move the tape on their own.

The root cause behind Apple's guidance cut is the same DRAM and NAND supply crunch driving the memory-chip rally I've been tracking across SK Hynix's Limit-Up Wasn't Just a Bounce — It Was a Cycle Signal and Micron Fell 33% From Its High. Its Own History Says That's Normal. AI infrastructure buildout has pulled so much memory capacity toward data centers that consumer hardware makers like Apple are now paying up — and passing the cost to buyers. It's the flip side of the same trade: memory makers are having their best year in a decade while the companies that need to buy their chips are getting squeezed.

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Who's affected

Apple bears the most direct hit. Cook was explicit that the September-quarter squeeze comes from tighter supply on iPhone, iPad and Mac, not from weaker demand — a distinction that matters because it points to a cost problem rather than a sales problem. That's consistent with what I covered in Apple Beat Every Estimate. The Memory Chip Shortage Tanked It Anyway: strong fundamentals colliding with a supply chain that Apple doesn't fully control.

Amazon, meanwhile, keeps validating the AWS reacceleration story. A 37% growth rate in the world's largest cloud provider — its fastest in nearly five years — is the kind of number that overshadows a single quarter's cloud capex debate. Beyond the two headline names, the memory suppliers (Micron, SK Hynix, Samsung) are the indirect winners of Apple's pain: every dollar Apple pays extra for DRAM and NAND is a dollar of pricing power flowing to the chipmakers on the other side of that shortage.

What to watch next

The leadership handoff adds a layer worth tracking independent of the earnings noise. Cook becomes executive chairman on September 1 with Ternus taking the CEO seat, meaning Apple's next several quarters of guidance, pricing decisions, and supply-chain negotiations will be run by a new chief executive during the most acute memory shortage in years. Watch whether Apple's September-quarter results actually land in that 9%-11% range, whether component costs stabilize or keep climbing, and whether AWS can sustain a 37% growth clip into its next report — reacceleration off a high base tends to be harder to repeat than to announce once.

This is not financial advice — always do your own research before making investment decisions.

Amazon's earnings strength and Apple's supply-driven guidance miss aren't really separate stories — they're two symptoms of the same AI-era memory shortage reshaping costs across tech. One company is riding the cloud side of that boom; the other is absorbing the cost side of it, right as its CEO chair changes hands.