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August 12, 2026 · market close

Nvidia and SpaceX Carry the Nasdaq 100 While Home Depot and Microsoft Pin the Dow to Flat

The S&P 500 edged higher on chip strength even as Microsoft, Home Depot and a cluster of consumer names pulled the Dow into the red.

The S&P 500 closed at 7,748.50, up 20.30 points, or 0.26%, on the day. Breadth was positive without being lopsided, with 261 of the index's 501 members finishing higher.

The S&P 500 through the session

Nvidia was the largest single contributor, adding 21.79 points on a 3.03% gain. Micron added 6.46 points, Lam Research 2.47, Applied Materials 2.41 and Intel 2.08, a run of chip names filling out the top of the ledger. Microsoft pulled the other way, subtracting 12.16 points on a 2.26% decline, with Amazon at -7.00, Meta at -6.48, Apple at -5.54 and Tesla at -2.13 rounding out the drag list.

S&P 500 attribution map, cell size = points contributed

The Dow

The Dow closed at 53,770.00, down 21.85 points, or 0.04%, essentially flat on the session. Breadth inside the index was split, with just 15 of its 30 members finishing higher.

The Dow through the session

Microsoft again led the drags, subtracting 67.64 points here. Home Depot was close behind, falling 3.12% and costing the index 65.68 points. Travelers took off 32.39 points, Amazon 29.66 and Sherwin-Williams 25.08. Caterpillar was the standout gainer, adding 72.69 points on a 1.45% rise. Nvidia contributed 39.17 points to the Dow's tally, Honeywell 31.03, Cisco 20.51 and UnitedHealth 20.21. This is where the Dow's story splits from the S&P's: Home Depot, Travelers and Sherwin-Williams barely show up in the S&P's own top movers, yet they were among the heaviest drags here, and Caterpillar's gain has no counterpart at all in the S&P's leaderboard.

Dow attribution map, cell size = points contributed

The Nasdaq 100

The Nasdaq 100 closed at 29,742.60, up 217.12 points, or 0.74%, the strongest showing of the three indexes today. Breadth was just over half positive, with 51 of its 101 members higher.

The Nasdaq 100 through the session

SpaceX Exploration Technologies added 138.99 points on a 9.65% jump, the single largest point contribution across all three indexes covered today. Nvidia added 130.75 points here, Micron 39.60, Walmart 17.94 and Lam Research 15.08. On the other side, Microsoft's drag was the largest of the day at -69.28 points, followed by Amazon at -44.13, Meta at -42.34, Apple at -31.83 and Tesla at -17.16. The divergence from the S&P and Dow is straightforward: SpaceX carries enough weight in this index to show up as its top mover, a name that does not appear in either of the other two leaderboards, and it was large enough to absorb the same megacap drag that only pinned the S&P near flat and pushed the Dow slightly negative.

Nasdaq 100 attribution map, cell size = points contributed

The sectors

Technology led all eleven sectors today, while Materials brought up the rear. Real Estate, Utilities and Consumer Staples posted modest gains in between. Communication Services and Consumer Discretionary joined Materials in the red.

The 11 sectors by move, top contributor named

Technology gained 1.49%, or 2.77 points, with Nvidia its top driver, contributing 0.86 points on the sector's own gauge.

Technology: what moved it

Materials fell 1.22%, or 0.65 points, with Linde its top drag, down 2.26% and costing the sector 0.16 points.

Materials: what moved it

None of today's index moves stand out against the past year. The S&P 500's move sits at the 60th percentile of daily moves over that stretch, the Dow's at the 42nd, and the Nasdaq 100's at the 72nd, all well short of the threshold for a large move.

The numbers

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Compiled by the WMTMT attribution engine from the session's official data · built by the founders of Babylon Burns