Stalk the tape.
Trade the gamma.
OGEX Stalker is a live terminal that maps where options dealers are positioned, strike by strike, across gamma and the other Greeks, redrawn as the session unfolds.
A terminal for the index trader.
Environment · trigger map
Positive gamma: dealer hedging leans against moves.
Market structure
Walls
| Wall | Strike | Since | Passed | Vol / OI |
|---|---|---|---|---|
| Call wall | 741 | 12:10 (4th) | 10:10 | 312k / 41k |
| Put wall | 738 | 11:35 (4th) | 10:25 | 448k / 52k |
| Max gamma | 740 | 10:35 (3rd) | 10:20 | 395k / 47k |
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01
Read
The tape’s character at a glance, bounded by the price ranges where it holds or flips.
01Environment · trigger map
PinningPositive gamma: dealer hedging leans against moves.
▲ UpsideAccepts above 741↔ Range · ActiveHolds 738 to 741▼ DownsideLoses 738 -
02
Structure
Spot against the walls, max gamma, zero gamma and the 1σ expected move, on one ladder.
02Market structure
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03
Change
GEX by strike across six exposure views, with 15, 30 and 60 minute change marks. Replay any stored session.
03GEXVOLDEXVEXCHEXCOLEX -
04
Walls
Each wall with how long it has stood, whether price has crossed it, and volume against open interest.
04Walls
Wall Strike Since Passed Vol / OI Call wall 741 12:10 (4th) 10:10 312k / 41k Put wall 738 11:35 (4th) 10:25 448k / 52k Max gamma 740 10:35 (3rd) 10:20 395k / 47k
Level & Parity Calculator
SPX, SPY and ES in one keystroke, points to percent off the prior close. SPX walls also shown in ES terms.
- SPX
- 7,416.20
- SPY
- 739.40
- ES
- 7,447.50
Example · same moment as the replay
Method
Flow sets the direction. Dealer positioning sets the friction: whether a move gets absorbed or accelerated.
Every read starts with the Greeks. The model is audited nightly against that day’s tape, and new methodology is backtested on out-of-sample data before it ships.
Read the positioning,
not the headlines.
Join the waitlist for OGEX. One email when seats open for Stalker and the Level & Parity Calculator. Nothing else.