Analysis
A Record Close With a Split Underneath
The Dow Jones Industrial Average closed at a record 54,349 on August 5, up 263 points, or 0.49%, its fifth straight positive session, according to [CNBC's live markets coverage](https://www.cnbc.com/2026/08/05/stock-market-today-live-updates.html). The Nasdaq Composite told a different story, falling 0.83% and snapping a four-day rally, while the S&P 500 slipped 0.17%. All three indexes were reacting to the same week of AI-infrastructure earnings; they simply disagreed about what those earnings meant.
The proximate cause of the Nasdaq's pullback sits inside two specific earnings reports. SpaceX's first quarterly print as a public company showed capital expenditure nearly doubling to $18.4 billion from $10.1 billion the prior quarter, and a stock that had been bid up as much as 9.4% intraday reversed to a loss after hours. AMD beat consensus and guided to 80% second-half server revenue growth, then fell anyway after Elon Musk said on SpaceX's earnings call that the company would commit fully to Nvidia chips for its AI buildout instead.
“The Nasdaq Composite told a different story, falling 0.83% and snapping a four-day rally, while the S&P 500 slipped 0.17%.”
Software Holds, Infrastructure Wobbles
Nvidia was the direct beneficiary, rallying roughly 3% on that same Musk comment, per [Yahoo Finance](https://ca.finance.yahoo.com/news/stock-market-today-wednesday-august-5-dow-sp-500-nasdaq-oil-hormuz-093653327.html) -- one customer's public chip preference moved a stock more than either company's actual quarterly results did. Palantir is the useful counterexample to the capex names. The company posted 93% revenue growth to $1.94 billion and raised full-year guidance to at least $8.15 billion, and its stock surged 29.45% the day the numbers came out, erasing close to $3 billion in short-sellers' unrealized gains in a single session. Unlike SpaceX and AMD, Palantir sells software with real margins today rather than infrastructure capacity for a buildout still years from fully monetizing, and the market has so far let it keep almost all of Tuesday's gain rather than reversing it the way SpaceX's stock reversed.
The honest caveat worth noting: a one-day index split is not a verdict on the AI trade broadly, and the Dow's own record owes as much to non-AI names and hopes for a Strait of Hormuz deal easing oil prices as to any AI thesis. The Nasdaq has rallied four of the last five sessions, and one down day driven by two specific earnings reactions is not evidence that AI capex spending is broadly out of favor.
What to watch: whether AMD's actual server revenue lands near its 80% guide next quarter, which would separate the Musk-comment noise from real demand; whether SpaceX's capex growth decelerates relative to revenue growth in its next print; and whether Palantir's stock holds its gain through a full trading week rather than mean-reverting the way SpaceX's did within hours of its own report.
