SPX dealer positioning, the week of August 25, 2025
Aug 25 to Aug 29 · 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 25 | 6454.6 | 6439.8 | -14.9 -0.23% | 26.6 | -26.8 | 6429.5 not crossed | positive |
| Tuesday Aug 26 | 6434.2 | 6466.1 | +31.9 +0.50% | 36.6 | +26.3 | 6395.6 not crossed | positive |
| Wednesday Aug 27 | 6458.9 | 6482.1 | +23.2 +0.36% | 28.2 | +16.1 | 6426.7 not crossed | positive |
| Thursday Aug 28 | 6491.8 | 6502.3 | +10.5 +0.16% | 40.3 | +20.1 | 6414.6 crossed 1x | positive |
| Friday Aug 29 | 6488.0 | 6459.1 | -28.9 -0.45% | 44.9 | -43.2 | 6409.6 not crossed | positive |
Week: -7.5 points (-0.12%), close to close from 2025-08-22.
Ranges: 176.6 points over 5 sessions, the largest 44.9 on 2025-08-29.
Zero-gamma flip at the close: 6429.5 on the first session, 6409.6 on the last (-19.9 points).
Closed in positive gamma: 5 of 5 sessions.
Events this week
- Aug 25
08:30Housing starts
Housing starts: actual 1432K / prior 1379K - Aug 26
08:30Durable goods orders
Durable goods m/m: actual -2.8% / prior -9.4% - Aug 26
10:00Consumer confidence (Conference Board)
spot +0.8 in the 15 minutes after 10:00; flip 6345.3 → 6351.0; net gamma long; walls 6345.3 / 6487.3 → 6351.0 / 6484.9 - Aug 27
09:30VIX settlement
spot +6.1 in the 15 minutes after 09:30; flip 6229.7 → 6198.6; net gamma long; walls 6229.7 / 6505.6 → 6198.6 / 6504.8 - Aug 27
16:05NVDA earnings - Aug 28
08:30GDP
GDP q/q: actual 4.4% / prior 3.8% - Aug 29
08:30PCE inflation, income and spending · high impact
Core PCE m/m: actual 0.2% / prior 0.3%
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.