SPX dealer positioning, the week of August 31, 2026
Aug 31 to Sep 4 · 5 of 5 days traded · each session free to replay
| Day | Open | Close | Change | Range | Close to close | Flip at the close | Gamma at the close |
|---|---|---|---|---|---|---|---|
| Monday Aug 31 | 7690.4 | 7685.9 | -4.4 -0.06% | 27.9 | -25.6 | 7677.4 crossed 40x | positive |
| Tuesday Sep 1 | 7631.4 | 7630.6 | -0.7 -0.01% | 51.5 | -55.3 | 7639.0 crossed 8x | negative |
| Wednesday Sep 2 | 7636.0 | 7666.2 | +30.2 +0.40% | 45.5 | +35.6 | 7666.0 crossed 16x | positive |
| Thursday Sep 3 | 7699.9 | 7747.4 | +47.4 +0.62% | 63.5 | +81.2 | 7721.6 crossed 6x | positive |
| Friday Sep 4 | 7737.3 | 7718.2 | -19.1 -0.25% | 36.8 | -29.2 | 7716.7 crossed 9x | positive |
Week: +6.7 points (+0.09%), close to close from 2026-08-28.
Ranges: 225.2 points over 5 sessions, the largest 63.5 on 2026-09-03.
Zero-gamma flip at the close: 7677.4 on the first session, 7716.7 on the last (+39.3 points).
Closed in positive gamma: 4 of 5 sessions.
Events this week
- Aug 31 On the same day: index rebalance, month-end SPX
- Sep 1
10:00ISM manufacturing PMI
PMI: forecast 55.2 / prior 55.6
spot +11.8 in the 15 minutes after 10:00; flip 7555.9 → 7555.2; net gamma long - Sep 1
10:00JOLTS job openings
Openings: actual 7.27M / forecast 7.33M / prior 7.36M
spot +11.8 in the 15 minutes after 10:00; flip 7555.9 → 7555.2; net gamma long - Sep 2
08:30Durable goods orders
Durable goods m/m: actual -0.0% / prior 0.9% - Sep 2
09:30VIX settlement
spot +3.5 in the 15 minutes after 09:30; flip 7542.4 → 7538.0; net gamma long - Sep 2
14:00Fed Beige Book
spot +4.1 in the 15 minutes after 14:00; flip 7581.9 → 7583.5; net gamma long - Sep 2
16:05AVGO earnings - Sep 3
10:00ISM services PMI
PMI: forecast 54.2 / prior 54.1
spot -3.2 in the 15 minutes after 10:00; flip 7628.1 → 7639.0; net gamma long - Sep 4
08:30Nonfarm payrolls · high impact
Hourly earnings m/m: forecast 0.3% / prior 0.1%; Payrolls: actual 162K / forecast 55K / prior -23K; Unemployment rate: actual 4.1% / forecast 4.1% / prior 4.1%
Prices are SPX at the minute. Change is close minus open; close to close is against the previous finished session. The zero-gamma flip is the terminal's measured flip at the close, and "crossed" counts the minutes the tape changed sides of it. Gamma at the close is where the close sat against that flip. Events are the market calendar's high and medium impact rows; the line under an in-session event is what the book did in the fifteen minutes after it, from the day's own payload. Nothing here is a forecast; see the Terms.