SPX dealer positioning, the week of October 13, 2025
Oct 13 to Oct 17 · 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 13 | 6629.5 | 6654.7 | +25.2 +0.38% | 46.7 | +101.9 | 6649.3 crossed 12x | positive |
| Tuesday Oct 14 | 6590.5 | 6645.2 | +54.7 +0.83% | 121.2 | -9.5 | 6644.5 crossed 6x | positive |
| Wednesday Oct 15 | 6685.0 | 6670.8 | -14.2 -0.21% | 109.4 | +25.6 | 6673.6 crossed 9x | negative |
| Thursday Oct 16 | 6692.6 | 6629.3 | -63.3 -0.95% | 112.8 | -41.5 | 6649.4 crossed 5x | negative |
| Friday Oct 17 | 6611.9 | 6663.4 | +51.5 +0.78% | 72.4 | +34.1 | 6650.3 crossed 15x | positive |
Week: +110.6 points (+1.69%), close to close from 2025-10-10.
Ranges: 462.5 points over 5 sessions, the largest 121.2 on 2025-10-14.
Zero-gamma flip at the close: 6649.3 on the first session, 6650.3 on the last (+1.0 points).
Closed in positive gamma: 3 of 5 sessions.
Events this week
- Oct 14
07:00JNJ earnings - Oct 14
07:00JPM earnings - Oct 14
12:20Fed Chair speech: Economic Outlook and Monetary Policy
spot +3.6 in the 15 minutes after 12:20; flip 6443.4 → 6458.2; net gamma long - Oct 15
09:30VIX settlement
spot +14.2 in the 15 minutes after 09:30; net gamma long (was short) - Oct 15
14:00Fed Beige Book
spot +2.1 in the 15 minutes after 14:00; flip 6541.3 → 6543.6; 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.