APP gamma exposure: flip, call wall, put wall

Dealer gamma by strike for AppLovin, from the option chain itself: two books, the level where net gamma changes sign, and the two strikes that carry the most. Expiries out to 45 days.

data as of 2026-09-18 16:00:03 ET · not updating right now · replay APP in the terminal
Spot
308.3
from put-call parity
Zero gamma flip
326.6
5.9% above spot
Call wall
330
7.0% above spot
Put wall
300
2.7% below spot
Net gamma, volume
-$10M
per 1% move
Net gamma, OI
-$6M
per 1% move
Price sits below the flip at 326.6: on this book dealer hedging adds to a move rather than leaning against it.
Gamma by strike, two books on one axis
OPEN INTEREST · last close
STRIKE
VOLUME · today
345
342.5
340
337.5
335
332.5
330
call wall
327.5
325
322.5
320
317.5
315
312.5
310
307.5
spot
305
302.5
300
put wall
297.5
295
292.5
290
287.5
285
282.5
280
277.5
275
272.5
270
By expiry, volume book
expiryflipcallputnet
2026-09-25329.9320305-$11M
2026-10-02296.4335290+$327K
2026-10-09306.7330290+$9K
2026-10-16297.9330300+$240K
2026-10-23314.9320290-$26K
2026-10-30n/a350270-$341K
How far to trust this bookD

a single stock with a thin tape; read the shape, not the sign.

Prints a second, regular session0.3
Strikes where the two books agree on the sign84%
Contracts traded today, expiries shown25,386

What this page assumes

  • Calls count as dealer-long gamma and puts as dealer-short. That is a convention, not a measurement: open interest does not say who holds a contract.
  • The volume book signs today's traded contracts. The open-interest book uses positions as of the last close and does not move inside the day.
  • Spot is derived from the option quotes by put-call parity, so it can sit a few cents from the last trade in the underlying.
  • APP options are American style and the underlying may pay a dividend. Each expiry is priced off its own forward from put-call parity, and gamma is Black-Scholes on that forward. Deep in-the-money contracts near a dividend are the weak spot.
  • Every figure is dollars of dealer delta per 1% move in APP, the unit that compares across symbols.
  • There is no tape-signed book on this page. That book exists only where a live engine runs.

Questions

What does it mean that APP is below its flip?

Net dealer gamma on this book is negative, so hedging flows tend to add to a move. It says nothing about direction.

Why are there two books?

Open interest is positioning as it stood at the last close. Volume is what traded today. When they disagree, that split is the reading.

Is this a trading signal?

No. We tested wall touches and flip crosses on SPX across more than a thousand sessions and found no edge that survives costs. These are measurements of where hedging concentrates.

How is this different from the SPX terminal?

SPX runs on a live engine: every second, with a third book signed print by print from the trade tape. This page is rebuilt from chain snapshots and carries the two conventional books only.