Reading the market regime before prices move
Every number here is computed from the traded VST options chain. The call wall is where dealer hedging accumulates above spot and caps upside, the put wall is its mirror below, and the gamma flip is the level where hedging stops damping moves and starts amplifying them.
| Strike | Calls | Puts | Today's volume | Skew |
|---|---|---|---|---|
| 142.00 | 993 | 95 | 667 | Call |
| 143.00 | 213 | 110 | 249 | Call |
| 144.00 | 181 | 105 | 185 | Call |
| 145.00 | 4,055 | 4,856 | 1,248 | Put |
| 146.00 | 1,025 | 27 | 425 | Call |
| 147.00 | 1,416 | 16 | 1,649 | Call |
| 148.00 | 162 | 7 | 718 | Call |
| 149.00 | 316 | 1 | 269 | Call |
| 150.00 | 6,231 | 8,715 | 3,189 | Put |
| 152.50 | 246 | 21 | 329 | Call |
| 155.00 | 4,578 | 1,621 | 1,587 | Call |
| 157.50 | 168 | 0 | 362 | Call |
| Day | Price | Gamma flip | Call wall | Put wall |
|---|---|---|---|---|
| 2026-08-10 | 144.09 | 143.57 | 165.00 | 125.00 |
| 2026-08-11 | 145.36 | 142.53 | 155.00 | 125.00 |
| 2026-08-12 | 146.98 | 143.47 | 155.00 | 125.00 |
| Metric | Value |
|---|---|
| Max pain strike | 148.00 |
| Put/Call ratio · today's volume | 0.67 |
| Put/Call ratio · open interest | 0.92 |
| 0DTE gamma flip | 136.36 |
| 0DTE contracts in chain | 118 |
| Total contracts read | 494 |
Price 149.30 is above the gamma flip 147.34 by 1.33%. Positioning is positive: as price rises dealers sell hedges, and as it falls they buy — so their hedging acts as a brake pulling price toward the middle. This explains sessions that look quiet despite news that would justify a wider move. Price is pinned to the call wall at 150.00: breaking above it forces buy-side hedging that accelerates the move up, while rejection from it is the more frequent outcome.
أكبرُ تجمّعٍ لعقود الشراء عند 150.00 (0.47% from price)، ولعقود البيع عند 140.00 (-6.23% from price)، والمسافةُ بينهما 7.14٪، a **wide** range. That does not imply a move is coming, only that the walls are far enough apart not to confine VST during the session, so flow leads rather than hedging.
صافي تعرّض الغاما لـVST يبلغ 2.53 مليون، وهو حجمٌ محدود. Hedging for a 1% move is about 16,958 shares. In this range hedging stays secondary to the stock's own flow, so the levels below should not be asked to carry more than they can.
and this reading is built on 494 contracts in the chain.
Over the last 27 days of tracking (298 archived snapshots), VST stayed above the gamma flip in 42% of readings، وتنقّلت نقطةُ الانقلاب نفسُها بين 139.47 و147.34، أي بنطاق 5.64٪، وهو ما يعني أنّ the level moves with the market and does not serve as a fixed reference across days، and net exposure today is below the period average (−5.37 مليون).