■ 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 — 65 — is the max pain price.
Open interest by strike · Fri, Aug 21
■ calls (up)■ puts (down)NTR 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 ≈ 29.2% · 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
0.99
-0.01
62.5
0.0131
0.00
-0.01
-0.01
0.98
-0.01
63
0.0174
0.00
-0.01
-0.02
0.96
-0.02
64
0.0315
0.01
-0.02
-0.04
0.93
-0.03
65
0.0571
0.01
-0.03
-0.07
0.87
-0.05
66
0.1008
0.02
-0.05
-0.13
0.75
-0.08
67
0.1598
0.02
-0.08
-0.25
0.67
-0.09
67.5
0.1864
0.03
-0.09
-0.34
0.57
-0.10
68
0.2024
0.03
-0.10
-0.44
0.37
-0.09
69
0.1897
0.03
-0.10
-0.64
0.22
-0.07
70
0.1397
0.02
-0.08
-0.79
0.13
-0.05
71
0.0910
0.01
-0.05
-0.88
0.07
-0.04
72
0.0568
0.01
-0.04
-0.94
0.06
-0.03
72.5
0.0448
0.01
-0.03
-0.95
0.04
-0.03
73
0.0354
0.01
-0.03
-0.96
0.03
-0.02
74
0.0223
0.01
-0.02
-0.98
Quoted contract greeks from the delayed feed (not modeled here); the highlighted row is nearest to spot. Showing 15 strikes around the money — all 36 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.