Event risk before this expiration:FOMC decision Wed, Oct 28 · Jobs report Fri, Nov 6 · CPI release Tue, Nov 10 · Jobs report Fri, Dec 4 · FOMC decision Wed, Dec 9 · CPI release Thu, Dec 10 — macro releases historically overwhelm pinning effects; max pain reads weakest in event weeks.
■ put-side pain■ call-side painTotal payout option writers would owe at each settle price (both sides, all open interest, ×100 shares) — low settles hurt put writers, high settles hurt call writers. The minimum — 24 — is the max pain price.
Open interest by strike · Fri, Jan 15
■ calls (up)■ puts (down)GTX open contracts per strike for Fri, Jan 15.
Open-interest change — building vs unwinding
Needs two observed snapshot days for this expiration — the comparison appears automatically once the next weekday snapshot lands. We diff real observations only; nothing is estimated.
Volume by strike · Fri, Jan 15
■ calls (up)■ puts (down)Today's traded contracts per strike (delayed).
Implied volatility by strike · Fri, Jan 15
— call IV— put IVATM ≈ 56.1% · Quoted strikes only; illiquid wings with junk fits are dropped, not smoothed.
Gamma exposure by strike · Fri, Jan 15
Net dealer gamma per strike, in dollars per 1% move, assuming the standard convention (dealers long calls, short puts) — an assumption, not an observation. Above the amber flip level hedging tends to dampen moves; below it, to amplify them.
Greeks by strike · Fri, Jan 15
Call Δ
Call Θ
Strike
Γ
Vega
Put Θ
Put Δ
0.86
-0.01
19
0.0252
0.03
-0.01
-0.14
0.84
-0.01
20
0.0301
0.03
-0.01
-0.17
0.80
-0.01
21
0.0356
0.04
-0.01
-0.20
0.77
-0.01
22
0.0417
0.04
-0.01
-0.24
0.72
-0.01
23
0.0479
0.04
-0.01
-0.28
0.67
-0.01
24
0.0538
0.05
-0.01
-0.34
0.61
-0.01
25
0.0584
0.05
-0.01
-0.40
0.55
-0.01
26
0.0613
0.05
-0.01
-0.46
0.43
-0.01
28
0.0609
0.05
-0.01
-0.58
0.38
-0.01
29
0.0583
0.05
-0.01
-0.63
0.34
-0.01
30
0.0549
0.05
-0.01
-0.68
0.30
-0.01
31
0.0510
0.04
-0.01
-0.71
0.26
-0.01
32
0.0471
0.04
-0.01
-0.75
0.21
-0.01
34
0.0397
0.04
-0.01
-0.80
0.19
-0.01
35
0.0364
0.04
-0.01
-0.83
Quoted contract greeks from the delayed feed (not modeled here); the highlighted row is nearest to spot. Showing 15 strikes around the money — all 25 are in the CSV. Δ per $1 of underlying · Θ per day · vega per IV point.
Stacked — layer the expirations
Call open interest per strike, stacked across the checked expirations — each color is one expiry. Strikes are pruned to the liquid center of each chain.
Max pain is arithmetic, not prophecy: the settle price that would minimize what option writers pay out at expiration, computed from open interest alone. Prices sometimes gravitate toward heavy strikes into expiry — dealer hedging is a real flow — but the evidence that max pain predicts settlement better than chance is mixed, and we are not going to pretend otherwise. Use it as a map of where positioning is stacked, next to the fundamentals and the earnings calendar, not as a target.
Data: Cboe delayed public feed (~15 minutes), refreshed here about every 15 minutes. Open interest itself updates once daily, before the open. Educational information, not investment advice.