■ 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 — 140 — is the max pain price.
Open interest by strike · Fri, Aug 21
■ calls (up)■ puts (down)SPCX 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 ≈ 74.7% · 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
0.81
-0.48
132
0.0328
0.03
-0.48
-0.18
0.78
-0.55
133
0.0366
0.03
-0.56
-0.22
0.74
-0.62
134
0.0401
0.04
-0.62
-0.26
0.70
-0.69
135
0.0432
0.04
-0.69
-0.30
0.65
-0.74
136
0.0457
0.04
-0.74
-0.35
0.60
-0.79
137
0.0475
0.04
-0.79
-0.40
0.56
-0.81
138
0.0485
0.04
-0.82
-0.45
0.51
-0.83
139
0.0488
0.04
-0.83
-0.49
0.46
-0.82
140
0.0483
0.04
-0.83
-0.54
0.41
-0.81
141
0.0471
0.04
-0.81
-0.59
0.33
-0.73
143
0.0430
0.04
-0.74
-0.68
0.25
-0.63
145
0.0374
0.04
-0.64
-0.75
0.19
-0.52
147
0.0313
0.03
-0.52
-0.81
0.17
-0.46
148
0.0283
0.03
-0.47
-0.84
0.14
-0.41
149
0.0254
0.03
-0.41
-0.86
Quoted contract greeks from the delayed feed (not modeled here); the highlighted row is nearest to spot. Showing 15 strikes around the money — all 60 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.