AAPL gamma exposure: flip, call wall, put wall

Dealer gamma by strike for Apple, 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 120 days.

data as of 2026-10-12 15:59:00 ET · replay AAPL in the terminal
Spot
341
from put-call parity
Zero gamma flip
333
2.3% below spot
Call wall
345
1.2% above spot
Put wall
335
1.8% below spot
Net gamma, volume
+$562M
per 1% move
Net gamma, OI
+$1.52B
per 1% move
Price sits above the flip at 333: on this book dealer hedging leans against a move rather than adding to it.
The session, 2026-09-25 priceflipcall wallput wall
342.5335334.3340.9 net gamma, volume book09:3010:3011:3012:3013:3014:3015:30
day10-1210-0910-0810-0710-0610-0510-0210-0109-3009-2909-2809-25 83 points · volume book · levels drawn as they stood
Strikes through the day levelchange since the open absorbs a movefeeds itprice
367.5365362.5360357.5355352.5350347.5345342.5340337.5335332.5330327.5325322.5320317.5315312.509:3010:3011:3012:3013:3014:3015:30
Gamma by strike, two books on one axis
OPEN INTEREST · last close
STRIKE
VOLUME · today
380
375
372.5
370
367.5
365
362.5
360
357.5
355
352.5
350
347.5
345
call wall
342.5
340
spot
337.5
335
put wall
332.5
330
327.5
325
322.5
320
317.5
315
312.5
310
307.5
305
302.5
By expiry, volume book
expiryflipcallputnet
2026-10-14335.1345337.5+$267M
2026-10-16331.1345330+$221M
2026-10-19290.8345330+$9M
2026-10-21346.7345335-$762K
2026-10-23331345337.5+$30M
2026-10-26324.3345330+$1M
How far to trust this bookD

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

Prints a second, regular session4.2
Strikes where the two books agree on the sign81%
Contracts traded today, expiries shown479,101

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.
  • AAPL 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 AAPL, 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 AAPL is above its flip?

Net dealer gamma on this book is positive, so hedging flows tend to lean against 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.