SPX dealer positioning, the week of September 7, 2026
Sep 7 to Sep 11 · 4 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 Sep 7 | no session | ||||||
| Tuesday Sep 8 | 7706.7 | 7673.2 | -33.5 -0.43% | 37.8 | -45.0 | 7687.6 crossed 21x | negative |
| Wednesday Sep 9 | 7653.6 | 7636.5 | -17.1 -0.22% | 31.2 | -36.7 | 7643.7 crossed 33x | negative |
| Thursday Sep 10 | 7593.1 | 7591.6 | -1.4 -0.02% | 30.8 | -44.9 | 7597.6 crossed 14x | negative |
| Friday Sep 11 | 7659.0 | 7657.3 | -1.8 -0.02% | 25.4 | +65.7 | 7666.6 crossed 13x | negative |
Week: -60.9 points (-0.79%), close to close from 2026-09-04.
Ranges: 125.1 points over 4 sessions, the largest 37.8 on 2026-09-08.
Zero-gamma flip at the close: 7687.6 on the first session, 7666.6 on the last (-21.0 points).
Closed in positive gamma: 0 of 4 sessions.
Events this week
- Sep 9
09:30VIX settlement
spot -3.8 in the 15 minutes after 09:30; flip 7731.6 → 7565.9; net gamma long (was short) - Sep 9
13:0010-year note auction, $39B (reopening)
spot +7.0 in the 15 minutes after 13:00; flip 7582.2 → 7582.5; net gamma long - Sep 10
08:30PPI
Core PPI m/m: forecast 0.3% / prior 0.2%; PPI m/m: actual 0.4% / forecast 0.4% / prior 0.0% - Sep 10
13:0030-year bond auction, $22B (reopening)
spot -1.3 in the 15 minutes after 13:00; flip 7507.9 → 7509.7; net gamma long - Sep 10
16:05ORCL earnings - Sep 11
08:30CPI · high impact
Core CPI m/m: actual 0.3% / forecast 0.2% / prior 0.2%; CPI m/m: forecast 0.4% / prior 0.1%; CPI y/y: actual 3.7% / forecast 3.4% / prior 3.4% - Sep 11
10:00UMich consumer sentiment (preliminary)
Sentiment: prior 51.7; 1y inflation: prior 4%; 5y inflation: prior 3.3%
spot -8.8 in the 15 minutes after 10:00; flip 7800.6 → 7794.4; net gamma long
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.