■ 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 — 150 — is the max pain price.
Open interest by strike · Wed, Oct 21
■ calls (up)■ puts (down)SPCX open contracts per strike for Wed, Oct 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 · Wed, Oct 21
■ calls (up)■ puts (down)Today's traded contracts per strike (delayed).
Implied volatility by strike · Wed, Oct 21
— call IV— put IVATM ≈ 84.2% · Quoted strikes only; illiquid wings with junk fits are dropped, not smoothed.
Gamma exposure by strike · Wed, Oct 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 · Wed, Oct 21
Call Δ
Call Θ
Strike
Γ
Vega
Put Θ
Put Δ
0.72
-0.53
138
0.0217
0.06
-0.53
-0.28
0.70
-0.55
139
0.0227
0.06
-0.55
-0.30
0.68
-0.56
140
0.0237
0.06
-0.56
-0.32
0.65
-0.57
141
0.0246
0.06
-0.57
-0.35
0.63
-0.58
142
0.0254
0.07
-0.58
-0.37
0.60
-0.59
143
0.0262
0.07
-0.59
-0.40
0.58
-0.60
144
0.0268
0.07
-0.60
-0.42
0.55
-0.60
145
0.0274
0.07
-0.60
-0.45
0.52
-0.60
146
0.0278
0.07
-0.60
-0.48
0.49
-0.59
147
0.0280
0.07
-0.59
-0.51
0.47
-0.58
148
0.0281
0.07
-0.59
-0.54
0.44
-0.57
149
0.0281
0.07
-0.57
-0.56
0.41
-0.56
150
0.0279
0.07
-0.56
-0.59
0.34
-0.52
152.5
0.0268
0.06
-0.52
-0.66
0.28
-0.46
155
0.0247
0.06
-0.46
-0.72
Quoted contract greeks from the delayed feed (not modeled here); the highlighted row is nearest to spot. Showing 15 strikes around the money — all 57 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.