Friday, July 31, 2026
Apple Sinks 8.6%, Amazon Soars 14.5% as Wall Street Closes Nearly Flat
Key Indicators
S&P 500
7,429.53
-8.10 (-0.11%) (down)Nasdaq Composite
25,132.20
+10.03 (+0.04%) (unchanged)Dow Jones Industrial Average
52,157.46
-50.60 (-0.10%) (down)10-Year Treasury Yield
4.67%
-1 bp (down)VIX
17.09
-1.14 (-6.3%) (down)WTI Crude Oil
$83.93
+0.34 (+0.41%) (up)Gold
$4,086.21
-17.23 (-0.42%) (down)Market Recap
Indexes finish nearly unchanged as Apple's historic slide offsets Amazon's best day in over a decade
Wall Street closed a volatile week almost exactly where it started Friday, but the calm headline numbers hid two of the biggest single-stock moves of the year. The S&P 500 slipped 0.11% to 7,429.53, the Dow fell 0.10% to 52,157.46, and the Nasdaq Composite was effectively flat, edging up 0.04% to 25,132.20. Beneath that stillness, Apple plunged roughly 8.6% to $304.73 and Amazon soared about 14.5% to $269.65 - both reacting to earnings released Thursday after the close. The two stocks' opposite, double-digit moves very nearly canceled each other out at the index level, a reminder that a quiet headline number can mask enormous dispersion underneath.
Apple sinks ~8.6% as supply-chain strain clouds the guide despite a beat-and-raise quarter
Apple's fiscal Q3 revenue of $109.4 billion (+16% year-over-year) beat the roughly $108.79 billion Street estimate, and EPS of $2.02 topped the roughly $1.88 consensus. iPhone revenue grew 22% year-over-year to $54.3 billion. But Services revenue of $30.7 billion missed the roughly $31.3 billion estimate, and Greater China revenue of $18.8 billion came in below the roughly $19.5 billion expected. The real trigger was guidance: Apple said component shortages tied to the industry-wide, AI-driven data-center boom would cap fiscal Q4 revenue growth at 9-11%, well below the more-than-12% growth Wall Street had modeled. The roughly 8.6% drop erased nearly $500 billion in market value - Apple's worst single day since the 2020 pandemic selloff - as investors concluded that even Apple isn't insulated from the global chip and component crunch.
Amazon jumps ~14.5% as AWS posts its fastest growth since 2021
Amazon had its best day in more than a decade after Q2 results beat across the board. Total revenue crossed $200 billion in a single quarter for the first time ($200.6 billion, +20% year-over-year), topping the roughly $196.47 billion estimate. AWS revenue of $42.2 billion grew 37% year-over-year - its fastest pace in 18 quarters and well above the 31% growth analysts expected - with AWS operating income jumping to $16.6 billion from $10.2 billion a year earlier, a 39.4% margin. EPS of $5.75 also beat estimates. Analysts moved quickly to raise price targets, with Goldman Sachs lifting its target on the stock to $375 from $335. Coming right after Microsoft's post-earnings surge and Meta's post-earnings slide earlier in the week, Amazon's report gave the market a second concrete data point that AI infrastructure spending is translating into real cloud revenue and margin.
South Korea's Kospi soars a record 17.9% as the global memory-chip trade rips back to life
The AI trade's volatility wasn't confined to the U.S. South Korea's Kospi index surged 17.9% to 6,695.45 Friday - its largest single-day gain on record, surpassing the roughly 12% jump seen during the 2008 financial crisis - as Samsung Electronics jumped 28% and SK Hynix soared 30%. The rally reversed a more-than-17% three-day slide driven by fears of an AI bubble and rising Chinese competition in chipmaking. The catalyst was the U.S. earnings above: Amazon's and Microsoft's results reinforced that hyperscaler capital spending on AI infrastructure - and the memory chips that go into it - isn't slowing. The four largest U.S. hyperscalers (Amazon, Microsoft, Meta, and Alphabet) now guide to a combined $720-745 billion in 2026 capital expenditures, up roughly 77% from 2025's roughly $410 billion. Even after Friday's bounce, U.S. semiconductor stocks remain on pace for their worst month since 2002 - a reminder of just how sharp this month's swings have been.
VIX eases and yields hold steady as investors read the earnings split as stock-specific, not systemic
The VIX, Wall Street's volatility gauge, fell about 6% to 17.09, suggesting investors read Friday's Apple-Amazon divergence as company-specific rather than a signal of broader market stress. The 10-year Treasury yield held around 4.67%, little changed after the week's volatility around Wednesday's divided Fed vote. Gold briefly broke above $4,100 an ounce overnight after the U.S. paused airstrikes on Iran, before easing back to around $4,086, down about 0.4% on the day. WTI crude held around $83.93 a barrel, up modestly, as traders weighed a pickup in tanker traffic through the Strait of Hormuz against a lingering war-risk premium. Oil is still on pace for its first monthly gain since April, with both WTI and Brent up more than 20% for July.
Concept of the Day
Return Dispersion
Return dispersion measures how much individual stocks' returns differ from one another - and from the index they belong to - on a given day. It's a distinct idea from volatility, which measures how much a single security or index moves over time. You can have low index volatility and extremely high dispersion at the same moment, which is exactly what happened Friday: the S&P 500 moved just -0.11%, about as quiet a day as it gets, while two of its largest constituents, Apple and Amazon, moved -8.6% and +14.5% respectively - some of the largest single-day moves either stock has posted in years. The mechanism is simple index arithmetic. A cap-weighted index like the S&P 500 is a weighted average of its constituents' returns, with weights proportional to market value. When two large-weight stocks move by similar magnitude in opposite directions, their contributions to the index return largely cancel out, even though nothing canceled out for anyone actually holding the individual shares. The index's calm is a statistical artifact of offsetting moves, not evidence that 'nothing happened' in the market that day. Dispersion tends to spike around events that force investors to differentiate between similar-looking companies - earnings season is the classic case, and this week's stretch of hyperscaler reports (Microsoft, Meta, Apple, Amazon all within days of each other) is a textbook example. When the market is deciding whether AI capital spending is paying off, it doesn't apply the same verdict to every company; it applies a different verdict to each one based on that company's specific numbers, and dispersion is the visible residue of that differentiation process.
Why it matters
Today is a live example of why the index-level number and the individual-stock experience can tell completely different stories. Someone holding only an S&P 500 index fund barely noticed Friday - the fund moved -0.11%. Someone holding Apple individually just had one of their worst days in years; someone holding Amazon had one of their best days in over a decade. As a handful of AI-related mega-caps make up a growing share of index weight, this kind of dispersion - large, offsetting moves in individual names that leave the headline index number looking deceptively calm - is becoming a more regular feature of how markets digest AI-capex news, not a one-off.
What to Watch
Mon, Aug 3
ISM Manufacturing PMI (July)
The first factory survey since Apple flagged industry-wide component shortages will show whether supply constraints are showing up more broadly in manufacturing.
Fri, Aug 7
Employment Situation (July jobs report)
The next full labor-market read will help clarify whether the economy is cooling enough to justify the Fed's hold or strong enough to bolster the case for a September hike.
Wed, Aug 12
CPI (July)
The next inflation reading will show whether tariff- and energy-driven price pressure is easing or reaccelerating, a key input for the Fed's September decision.
Wed, Aug 19
FOMC Minutes (July 28-29 meeting)
The minutes will detail the reasoning behind the three hawkish dissents from Wednesday's Fed decision and how seriously the committee is weighing a September hike.