SPX dealer positioning, the week of October 6, 2025
Oct 6 to Oct 10 · 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 Oct 6 | 6736.6 | 6740.6 | +4.0 +0.06% | 28.9 | +24.6 | 6738.5 crossed 9x | positive |
| Tuesday Oct 7 | 6747.6 | 6714.3 | -33.3 -0.49% | 52.2 | -26.3 | 6714.3 crossed 9x | negative |
| Wednesday Oct 8 | 6724.0 | 6754.2 | +30.2 +0.45% | 35.7 | +39.9 | 6745.6 crossed 6x | positive |
| Thursday Oct 9 | 6758.4 | 6734.7 | -23.8 -0.35% | 44.7 | -19.5 | 6729.0 crossed 6x | positive |
| Friday Oct 10 | 6742.3 | 6552.8 | -189.5 -2.81% | 210.3 | -181.9 | 6625.9 crossed 1x | negative |
Week: -163.2 points (-2.43%), close to close from 2025-10-03.
Ranges: 371.8 points over 5 sessions, the largest 210.3 on 2025-10-10.
Zero-gamma flip at the close: 6738.5 on the first session, 6625.9 on the last (-112.6 points).
Closed in positive gamma: 3 of 5 sessions.
Events this week
- Oct 8
09:30VIX settlement
spot -1.9 in the 15 minutes after 09:30; flip 6623.1 → 6642.7; net gamma long - Oct 8
13:0010-year note auction, $39B (reopening)
spot +0.9 in the 15 minutes after 13:00; flip 6654.9 → 6654.8; net gamma long - Oct 8
14:00FOMC minutes
spot +3.4 in the 15 minutes after 14:00; flip 6660.1 → 6660.9; net gamma long - Oct 9
08:30Fed Chair speech: Welcoming Remarks - Oct 9
13:0030-year bond auction, $22B (reopening)
spot -3.1 in the 15 minutes after 13:00; flip 6661.3 → 6664.3; net gamma long - Oct 10
10:00UMich consumer sentiment (preliminary)
Sentiment: prior 55.1; 1y inflation: prior 4.7%; 5y inflation: prior 3.7%
spot -8.3 in the 15 minutes after 10:00; flip 6611.6 → 6633.8; 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.