■ 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 — 139 — is the max pain price.
Open interest by strike · Fri, Oct 23
■ calls (up)■ puts (down)WPM open contracts per strike for Fri, Oct 23.
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, Oct 23
■ calls (up)■ puts (down)Today's traded contracts per strike (delayed).
Implied volatility by strike · Fri, Oct 23
— call IV— put IVATM ≈ 43.2% · Quoted strikes only; illiquid wings with junk fits are dropped, not smoothed.
Gamma exposure by strike · Fri, Oct 23
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, Oct 23
Call Δ
Call Θ
Strike
Γ
Vega
Put Θ
Put Δ
0.78
-0.14
129
0.0304
0.07
-0.14
-0.22
0.75
-0.15
130
0.0330
0.07
-0.15
-0.25
0.71
-0.17
131
0.0354
0.08
-0.17
-0.29
0.68
-0.17
132
0.0375
0.08
-0.17
-0.32
0.64
-0.18
133
0.0393
0.09
-0.18
-0.36
0.60
-0.19
134
0.0407
0.09
-0.19
-0.40
0.56
-0.19
135
0.0415
0.09
-0.19
-0.44
0.51
-0.19
136
0.0419
0.09
-0.19
-0.49
0.47
-0.19
137
0.0418
0.09
-0.19
-0.53
0.43
-0.19
138
0.0412
0.09
-0.19
-0.57
0.39
-0.19
139
0.0401
0.09
-0.19
-0.61
0.35
-0.18
140
0.0386
0.08
-0.18
-0.65
0.28
-0.17
142
0.0349
0.08
-0.17
-0.71
0.25
-0.16
143
0.0327
0.07
-0.16
-0.74
0.23
-0.15
144
0.0305
0.07
-0.15
-0.77
Quoted contract greeks from the delayed feed (not modeled here); the highlighted row is nearest to spot. Showing 15 strikes around the money — all 47 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.