■ 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 — 410 — is the max pain price.
Open interest by strike · Fri, Oct 23
■ calls (up)■ puts (down)HUM 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 ≈ 47.0% · 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
0.80
-0.55
392.5
0.0105
0.16
-0.55
-0.21
0.77
-0.59
395
0.0113
0.18
-0.60
-0.23
0.74
-0.64
397.5
0.0121
0.19
-0.64
-0.26
0.70
-0.67
400
0.0128
0.20
-0.68
-0.30
0.64
-0.74
405
0.0140
0.21
-0.74
-0.36
0.60
-0.76
407.5
0.0144
0.22
-0.76
-0.40
0.56
-0.78
410
0.0147
0.23
-0.78
-0.44
0.49
-0.79
415
0.0149
0.23
-0.79
-0.51
0.45
-0.78
417.5
0.0148
0.23
-0.79
-0.55
0.42
-0.77
420
0.0145
0.22
-0.78
-0.59
0.35
-0.73
425
0.0137
0.21
-0.73
-0.66
0.29
-0.67
430
0.0125
0.20
-0.67
-0.72
0.26
-0.63
432.5
0.0119
0.18
-0.64
-0.75
0.23
-0.59
435
0.0112
0.17
-0.60
-0.77
0.20
-0.55
437.5
0.0104
0.16
-0.56
-0.80
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.