Case studies
Case 09Called liveMonday, August 31, 2026

Stuck in $6.9B of positive gamma mud

Thirty-two points, all session, and the high was the opening print. This is what a positive gamma regime looks like.

SPX open
7,697.52
High
7,697.52

09:30 ET

Low
7,665.06

10:26 ET

Close
7,686.38
0DTE net gamma positive
95%

of the session's minutes

All-expiry net gamma positive
99%

of the session's minutes

VIX open → close
15.28 → 14.95
VIX high
15.47

The positive gamma regime

The story

  1. 0DTE net gamma positive 95% of minutes, all-expiry 99%. VIX 15.3 to 14.9.
  2. 10:20 — 7700 jumped to +$4.4B against -$2.7B at 7705: a sold call spread directly overhead.
  3. The whole session fit inside 32.5 points, and the high, 7697.52, was the opening print. Every push up met 7700; every dip met the put strikes underneath.
  4. Then what: after 09:35 the best print of the day was 7696.33 in the final minute — still short of the strike named at 10:20.

Minute by minute

The beats

  1. 10:20 ETposted live

    the post: huge spike in positive gamma at 7700, verticals sold

  2. 10:26 ET

    session low 7665.06

  3. 13:12 ETposted live

    the post: stuck in $6.9B of positive gamma

  4. 15:52 ET

    afternoon push to 7692 — still under 7700

In #qo-market-data, as it happened

Posted live

10:20 ET
Huge spike in positive gamma at 7700 with verticals sold
13:12 ET
Stuck in $6.9b of positive gamma mud. That is a large value. Premarket commentary on $VIX 15 remains relevant through Wednesday.

From the product

The dashboard at each beat

Premium Flow, Cumulative Net Delta and Gamma Flow By Strike on one screen, replayed to the minute. Real frames, nothing redrawn. Click the right of the frame to step to the next beat.

Dashboard frame 1 of 4: 10:20 ET — The post: huge spike in positive gamma at 7700, verticals sold

1 / 4

10:20 ET — The post: huge spike in positive gamma at 7700, verticals sold

More of this session

The short cut

The short cut

9 slides

The case, slide by slide

Slide 1 of 9

1 / 9

These pages describe what the displays show and what the data did on the sessions shown. They are not trading advice, and a past session is not a forecast of a future one.