■ 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 — 20 — is the max pain price.
Open interest by strike · Fri, Aug 21
■ calls (up)■ puts (down)UMAC open contracts per strike for Fri, Aug 21.
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, Aug 21
■ calls (up)■ puts (down)Today's traded contracts per strike (delayed).
Implied volatility by strike · Fri, Aug 21
— call IV— put IVATM ≈ 137.8% · Quoted strikes only; illiquid wings with junk fits are dropped, not smoothed.
Gamma exposure by strike · Fri, Aug 21
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, Aug 21
Call Δ
Call Θ
Strike
Γ
Vega
Put Θ
Put Δ
0.79
-0.13
30
0.0454
0.01
-0.13
-0.21
0.76
-0.14
30.5
0.0485
0.01
-0.14
-0.24
0.73
-0.15
31
0.0514
0.02
-0.15
-0.27
0.70
-0.16
31.5
0.0539
0.02
-0.16
-0.30
0.68
-0.17
32
0.0561
0.02
-0.17
-0.33
0.65
-0.18
32.5
0.0578
0.02
-0.18
-0.36
0.61
-0.18
33
0.0592
0.02
-0.18
-0.39
0.55
-0.19
34
0.0606
0.02
-0.19
-0.45
0.49
-0.19
35
0.0605
0.02
-0.19
-0.51
0.44
-0.19
36
0.0590
0.02
-0.19
-0.56
0.39
-0.19
37
0.0565
0.02
-0.19
-0.62
0.34
-0.18
38
0.0534
0.02
-0.18
-0.66
0.29
-0.17
39
0.0497
0.02
-0.17
-0.71
0.26
-0.16
40
0.0459
0.01
-0.16
-0.74
0.13
-0.11
45
0.0278
0.01
-0.11
-0.88
Quoted contract greeks from the delayed feed (not modeled here); the highlighted row is nearest to spot. Showing 15 strikes around the money — all 56 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.