SPX dealer positioning, the week of October 5, 2026
Oct 5 to Oct 9 · 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 5 | 7727.9 | 7772.6 | +44.7 +0.58% | 65.5 | +50.4 | 7763.4 not crossed | positive |
| Tuesday Oct 6 | 7813.3 | 7819.3 | +6.0 +0.08% | 35.4 | +46.7 | 7825.7 crossed 7x | negative |
| Wednesday Oct 7 | 7787.0 | 7800.3 | +13.2 +0.17% | 42.4 | -19.1 | 7791.8 crossed 8x | positive |
| Thursday Oct 8 | 7773.9 | 7764.2 | -9.7 -0.12% | 57.6 | -36.1 | 7765.0 crossed 21x | negative |
| Friday Oct 9 | 7790.5 | 7811.1 | +20.5 +0.26% | 39.0 | +46.9 | 7802.2 crossed 6x | positive |
Week: +88.8 points (+1.15%), close to close from 2026-10-02.
Ranges: 239.9 points over 5 sessions, the largest 65.5 on 2026-10-05.
Zero-gamma flip at the close: 7763.4 on the first session, 7802.2 on the last (+38.8 points).
Closed in positive gamma: 3 of 5 sessions.
Events this week
- Oct 5
10:00ISM services PMI
PMI: forecast 55.1 / prior 55.4
spot +21.7 in the 15 minutes after 10:00; flip 7622.9 → 7620.6; net gamma long - Oct 7
09:30VIX settlement
spot -11.2 in the 15 minutes after 09:30; flip 7603.6 → 7685.9; net gamma long (was short) - Oct 7
13:0010-year note auction, $39B (reopening)
spot +6.9 in the 15 minutes after 13:00; flip 7799.0 → 7706.0; net gamma long (was short) - Oct 7
14:00FOMC minutes
spot +2.2 in the 15 minutes after 14:00; flip 7731.6 → 7735.3; net gamma long - Oct 8
13:0030-year bond auction, $22B (reopening)
spot +8.5 in the 15 minutes after 13:00; flip 7845.5 → 7844.5; net gamma long - Oct 9
10:00UMich consumer sentiment (preliminary)
Sentiment: prior 48.1; 1y inflation: prior 4.6%; 5y inflation: prior 3.4%
spot +3.4 in the 15 minutes after 10:00; net gamma short
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.