Stocks pushed broadly higher on Tuesday, August 4, 2026, in a session defined by strength across technology and semiconductors. All three major index proxies finished in the green, with the tech-heavy Nasdaq benchmark leading the way.
How the major indexes closed
The Invesco QQQ Trust (NASDAQ: QQQ) led the pack, rising 3.40% to close at 723.85. The SPDR S&P 500 ETF (NYSEARCA: SPY) added 1.80% to 771.33, while the SPDR Dow Jones Industrial Average ETF (NYSEARCA: DIA) climbed 1.73% to 540.43. The gap between the QQQ and the Dow proxy underscores just how concentrated the day's gains were in growth and technology names.
Sectors: tech leads, defensives lag
The Technology Select Sector SPDR (NYSEARCA: XLK) dominated the leaderboard with a 4.98% gain, far outpacing the next-strongest groups. Materials (XLB) rose 1.94% and Industrials (XLI) added 1.77%, giving the advance some cyclical breadth. Financials (XLF) tacked on 0.87%.
The laggards were the classic defensive and rate-sensitive corners of the market. Utilities (XLU) fell 0.56%, Energy (XLE) slipped 0.46%, Health Care (XLV) edged down 0.09%, and Real Estate (XLRE) was essentially flat at -0.02%. That rotation out of defensives and into high-beta technology is consistent with a risk-on tone.
Palantir steals the show
The standout among individual names was Palantir Technologies (NASDAQ: PLTR), which surged 29.45% to 162.66 and topped the most-active list with roughly 175 million shares traded. The move rippled straight into the market for leveraged single-stock products: the GraniteShares 2x Long PLTR Daily ETF (NASDAQ: PTIR) jumped 58.03% and the Leverage Shares 2X Long PLTR Daily ETF (PLTG) rose 58.13%, while the inverse Defiance Daily Target 2x Short PLTR ETF (NASDAQ: PLTZ) collapsed 58.71% to lead the losers' list. The mirror-image moves in those vehicles are a direct mechanical function of Palantir's rally rather than independent stories.
Semiconductors provided the muscle behind the broader tech gain. Micron Technology (NASDAQ: MU) rose 7.62% to 892.67, Advanced Micro Devices (NASDAQ: AMD) added 7.00% to 518.58, and NVIDIA (NASDAQ: NVDA) gained 2.56% to 211.94 on heavy volume of nearly 135 million shares. With chip names, Palantir and the index ETFs dominating the most-active list, trading activity was heavily clustered around the technology complex.
Notable decliners
Away from the tech strength, AdaptHealth Corp. (NASDAQ: AHCO) fell 38.04% to 6.71 on elevated volume, one of the day's sharpest declines among ordinary common stocks. Better Home & Finance (BETR) dropped 36.74% to 17.27. On the extreme end of the gainers, Autonomix Medical (NASDAQ: AMIX) spiked 434.25% to 19.50 on very heavy turnover — the kind of outsized single-day move typical of a low-priced, news-driven small cap rather than a broad-market signal.
What the moves suggest heading into Wednesday
The session's character was clear: money flowed toward growth and semiconductors while defensive sectors lagged, a pattern that reflects appetite for risk rather than caution. Palantir's outsized gain and the resulting swings in its leveraged and inverse ETFs highlight how concentrated the day's activity was in a handful of high-profile names.
Heading into the next session, the question worth watching is whether the strength stays narrow — driven by chips and Palantir — or broadens out. The modest gains in Industrials and Materials suggest some participation beyond pure technology, while the softness in Utilities, Energy and Health Care shows defensives were left behind. As always, single-day moves in leveraged products and low-priced stocks say more about their own mechanics and news flow than about the market's overall trend.