■ 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 — 430 — is the max pain price.
Open interest by strike · Fri, Oct 30
■ calls (up)■ puts (down)SPGI open contracts per strike for Fri, Oct 30.
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 30
■ calls (up)■ puts (down)Today's traded contracts per strike (delayed).
Implied volatility by strike · Fri, Oct 30
— call IV— put IVATM ≈ 36.7% · Quoted strikes only; illiquid wings with junk fits are dropped, not smoothed.
Gamma exposure by strike · Fri, Oct 30
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 30
Call Δ
Call Θ
Strike
Γ
Vega
Put Θ
Put Δ
0.87
-0.59
430
0.0119
0.09
-0.60
-0.13
0.84
-0.67
432.5
0.0139
0.10
-0.68
-0.16
0.81
-0.76
435
0.0161
0.11
-0.77
-0.19
0.77
-0.85
437.5
0.0184
0.12
-0.85
-0.23
0.72
-0.93
440
0.0208
0.14
-0.94
-0.28
0.67
-1.01
442.5
0.0229
0.15
-1.02
-0.33
0.61
-1.06
445
0.0247
0.16
-1.07
-0.39
0.55
-1.09
447.5
0.0259
0.16
-1.10
-0.45
0.49
-1.09
450
0.0264
0.16
-1.11
-0.52
0.42
-1.06
452.5
0.0260
0.16
-1.08
-0.58
0.36
-1.00
455
0.0248
0.15
-1.02
-0.65
0.30
-0.93
457.5
0.0230
0.14
-0.94
-0.70
0.25
-0.83
460
0.0208
0.13
-0.84
-0.76
0.20
-0.73
462.5
0.0183
0.12
-0.74
-0.80
0.17
-0.64
465
0.0159
0.10
-0.64
-0.84
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.