Below the line
S&P 500 6,816.63 · −64.99 · −0.94%
Monday had been the shrug — the war two days old, the index gapping down and closing green. Tuesday was the market doing the arithmetic properly. It opened at 6,800.26, which was as high as it got in the morning, and lost eighty-nine points in fifty minutes to 6,710.42, down 2.49 percent from Monday's close. Then it climbed, patiently, for five hours, all the way back to 6,840.05 at twenty to three — above where it had opened — and then gave a chunk of that up into the bell and finished at 6,816.63, down 0.94 percent. Everything about that path says a market still arguing. What settles the argument is in the numbers underneath it: all eleven sectors red, four stocks falling for every one that rose, and a close below the hundred-day average for the first time since the middle of November. The boat had gone below the coping stone. From down there you cannot see over the wall.
The day's protagonist
Caterpillar CAT
Move: −4.01% to 722.18 — the machine company, four weeks later
Twenty-six days earlier Caterpillar had added 47.89 dollars a share, more than any other component, and carried the Dow Jones Industrial Average through fifty thousand for the first time. On 3 March it fell 4.01 percent to 722.18, traded as low as 706.60, and helped take the same average down four hundred points. Nothing had happened to Caterpillar. What had happened was that a war had started in the Gulf on 28 February, crude was climbing, and the entire category of companies whose earnings depend on the world deciding to build things had been marked down together — materials worst of all, off 2.7 percent, industrials 2.0. Intel fell harder in percentage terms, 5.27 percent to 43.10, and it belongs in the ledger; but Caterpillar is the one this page wants, because it is the same stock doing the same disproportionate work in the opposite direction. On 6 February a price-weighted average said heavy industry was worth a round number nobody had seen before. On 3 March the same arithmetic, applied to the same company, said the opposite. Neither statement was about excavators.
The deeper account
There were no economic figures on 3 March. There was no policy announcement. The whole of the session's information was five days old — coordinated strikes on Iranian military and strategic sites, Iranian retaliation, and the arithmetic of what that does to the price of energy — and the market spent the day working through it a second time, more carefully than it had on Monday. The first fifty minutes were the reflex: down eighty-nine points, the low of the day at twenty past ten. The next five hours were the argument: back up a hundred and thirty, through the opening price, to a high at twenty to three. The last hour was the verdict, and the verdict was a small loss.
A ninety-four-basis-point decline is not, by itself, a page. What makes this one is the texture underneath it, and the texture is unanimous in a way that the headline number hides. Every single one of the eleven sectors finished red. Four stocks fell for every one that rose on the New York exchange. The heaviest losses were in materials and industrials — the businesses that need the world to keep building — and the mildest were in the defensives, which is the same sorting the market had done three weeks earlier for an entirely different reason. When a market falls by less than one percent and nothing at all goes up, it is not undecided. It is early.
And then there is the hundred-day average, which is exactly the kind of fact this archive is suspicious of and prints anyway. A moving average is a line drawn through the past; crossing it forecasts nothing. What it does record, precisely, is that a level the index had spent three and a half months above was now beneath it — and the reason to keep the number is that the people trading that afternoon knew it, watched it, and traded around it. The chart's own memory is part of the day's weather. The photograph is a narrowboat in an emptying lock: the water going down, the green band on the wall rising past the roof, the keeper up on the beam looking in. Nothing has happened to the boat. It is simply lower than the country around it, and going lower.
The artifact
The ledger — what actually happened
| Measure | Close | Change | Marginalia |
|---|---|---|---|
| S&P 500 | 6,816.63 | −64.99 · −0.94% | opened 6,800.26 · low 6,710.42 at 10:20, down 2.49 percent from Monday · then five hours up to 6,840.05 at 14:40 · faded into the close |
| The hundred-day | crossed | the first close below the hundred-day moving average since the middle of November — three and a half months above it, ended in one session | |
| Breadth | 4.1-to-1 down | decliners to advancers on the NYSE; 2.81-to-1 on the Nasdaq. All eleven sectors finished negative — materials −2.7%, industrials −2.0%, health care and technology −1.1% each | |
| Caterpillar | 722.18 | −4.01% | low 706.60. Twenty-six days after it carried the Dow through fifty thousand |
| Intel | 43.10 | −5.27% | low 42.14 — the largest fall among the big names, on 84 million shares |
| VIX | 23.57 | +9.9% | still nowhere near where it goes. It reads 31.05 by 27 March |
| Treasuries | 4.063% | +1bp | the ten-year, barely moved; the two-year 3.506%, up about two. No flight to bonds — the war was still being priced as an oil problem, not a growth problem |
| Yesterday | 6,881.62 | Monday 2 March, the first session after the war began: gapped down, closed green, no stamp. That page is already in the archive |
Sources
- Robinhood market-data feed — SPX 10-minute bars and day bar; CAT, INTC, NVDA, AVGO and SNDK day bars, adjustment none. Pulled 2026-08-28
- Zacks via Yahoo Finance — "Stock Market News for Mar 4, 2026" (covers the 3 March session: index closes, all eleven sectors, Intel and Caterpillar, VIX, breadth, the hundred-day average, Treasury yields) — https://finance.yahoo.com/news/stock-market-news-mar-4-142000034.html