The numbers come down
S&P 500 6,782.81 · +165.96 · +2.51%
Everything that mattered on this day happened while the market was closed. Operations against Iran were suspended for two weeks, the five-week war paused, the Strait due to reopen; and by the time the bell rang in New York the index had already moved. It opened at 6,754.36, a hundred and thirty-seven points above Tuesday's close — up 2.08 percent before a single share had traded — reached 6,793.50 within half an hour, and then spent the remaining six hours going almost nowhere at all, closing 6,782.81. The whole day's work was done in the dark.
The day's protagonist
Exxon Mobil XOM
Move: −4.69% to 156.22 — the day peace cost somebody money
On a day when the index rose 2.51 percent and the Dow had its best session in a year, the largest oil company in the country fell 4.69 percent. That is the whole shape of the ceasefire trade in one line. Crude collapsed more than sixteen percent to $94.41 — the worst single day for oil since April 2020, the month it went negative — and everything that had been earning on the war gave the earnings back. The instructive part is what happened to the winners: Delta opened up 11.2 percent and closed up 3.75; Tesla opened up 4.9 percent and closed down 0.98. The gap was the whole move and the session spent six hours slowly disagreeing with itself about how much of it to keep. Exxon, alone among the large names, was never in doubt. It knew exactly what the news was worth to it, and it was worth less.
The deeper account
There is a kind of session that contains no decisions, and this is the cleanest example the year produced. The suspension of operations was announced while New York slept. Asia traded it — the Nikkei up five percent, the Kospi seven — and by the time the American market opened, the price was already set: 6,754.36, a hundred and thirty-seven points and two percent above Tuesday's close, arrived at by nobody in the building. The index touched 6,793.50 inside the first half hour, sagged to 6,740.28 by eleven, wandered for five hours, and closed at 6,782.81. Take the opening gap away and the S&P 500 gained about half a percent on the day. Everything else had been decided overnight.
The number that actually moved was oil. Crude fell more than sixteen percent to $94.41, its worst day since April 2020 — five weeks of closed strait coming out of the price in a single session — and the entire American market is, in the short run, a function of that. Gasoline had crossed four dollars a week earlier. The reason the market could not value anything in March was that it could not bound the energy input; the reason it could suddenly value everything on this Wednesday is that somebody had put a ceiling back on.
What the individual names did is the part worth keeping. Delta opened up 11.2 percent and closed up 3.75. Tesla opened up 4.9 and closed down 0.98. Microsoft opened up 3.4 and closed up 0.55. Every winner spent the day handing back the gift it had been given before it woke up, because a market that has already moved has nothing left to do but doubt itself. Only Exxon was consistent, falling 4.69 percent from the open and staying there — the one participant that understood immediately and completely what the news meant for it. Peace is not free. It is simply that the bill goes to a different address.
The artifact
Three grades, six boxes for figures, and one stroke drawn through all of them. The change was authorised overnight by an office that was not open, and the new numbers did not arrive for two hours. The sheet records the removal and not the replacement — which is also what the tape did.
Read the sheet
Printed text is shown plain; handwritten entries are shown in script.
FORECOURT PRICE CHANGE · CHANGE SHEET Nº 4
- DATE: 8 april — TIME: 06:10
- AUTHORISED BY: area office — overnight
- REGULAR / MID / DIESEL — FROM: struck through · TO: struck through
- ATTENDANT'S NOTE: told to take them all off and wait. no new figures came till eight. stood up there twenty minutes with nothing to put up.
- REMOVED PANELS ARE NOT TO BE LEFT BLANK DURING TRADING HOURS · THIS SHEET IS THE ONLY RECORD OF THE OLD FIGURE
Crude fell more than sixteen percent that day, its worst since April 2020. The index opened 137 points higher and then did essentially nothing for six hours, because the work had been done at ten past six in the morning by somebody on a ladder, acting on an instruction issued overnight by an office that was shut.
The ledger — what actually happened
| Measure | Close | Change | Marginalia |
|---|---|---|---|
| S&P 500 | 6,782.81 | +165.96 · +2.51% | opened 6,754.36 — a gap of 137.51, up 2.08 percent, before a share traded · high 6,793.50 in the first half hour · low 6,740.28 at eleven · closed almost exactly where it opened |
| Crude | $94.41 | −16% | WTI's worst day since April 2020; the Strait of Hormuz had been closed for five weeks and the risk premium came out overnight |
| The Dow | 47,909.92 | +2.85% | +1,325.46, its best day since April 2025; the Nasdaq rose 2.80 percent |
| Exxon Mobil | 156.22 | −4.69% | the day's instructive loser: the ceasefire arrived as a price cut |
| Delta | 68.08 | +3.75% | opened up 11.2 percent at 73.00 and gave two-thirds of it back by four o'clock — the shape of every winner on this page |
| Tesla | 343.25 | −0.98% | opened up 4.9 percent and closed red; the gap was the whole day, and the day spent itself arguing with the gap |
| Overnight | Nikkei +5% | Kospi +7, Hang Seng +3 — Asia had traded the news hours before New York was allowed to | |
| From the low | +6.93% | against 6,343.72 on 30 March; nine days off the bottom and most of the war's losses already gone |
Sources
- Robinhood market-data feed — SPX 30-minute bars and day bar; XOM, DAL, MSFT, TSLA, HOOD, MU day bars, adjustment none. Pulled 2026-08-27
- CNBC — "Dow jumps 1,300 points for best day since April 2025 as U.S.-Iran ceasefire pushes oil lower" — https://www.cnbc.com/2026/04/07/stock-market-today-live-updates.html
- CNN Business — "Oil plunges, Dow sees its best day in a year after US-Iran ceasefire" — https://www.cnn.com/2026/04/07/markets/us-stocks-oil-trump-iran-ceasefire
- NBC News — "Iran war ceasefire sends oil prices tumbling and stocks soaring" — https://www.nbcnews.com/business/markets/iran-war-ceasefire-oil-prices-stocks-trump-rcna267229