■ 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 — 78 — is the max pain price.
Open interest by strike · Fri, Oct 23
■ calls (up)■ puts (down)LEN 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 ≈ 42.1% · 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
0.91
-0.04
68
0.0288
0.02
-0.05
-0.09
0.88
-0.05
69
0.0362
0.03
-0.06
-0.12
0.84
-0.06
70
0.0447
0.03
-0.07
-0.16
0.80
-0.07
71
0.0540
0.04
-0.07
-0.21
0.74
-0.08
72
0.0632
0.04
-0.09
-0.26
0.67
-0.09
73
0.0712
0.04
-0.09
-0.33
0.60
-0.10
74
0.0770
0.05
-0.10
-0.41
0.52
-0.10
75
0.0795
0.05
-0.10
-0.48
0.44
-0.10
76
0.0784
0.05
-0.10
-0.56
0.36
-0.10
77
0.0742
0.05
-0.10
-0.64
0.30
-0.09
78
0.0676
0.04
-0.09
-0.70
0.24
-0.08
79
0.0598
0.04
-0.08
-0.76
0.19
-0.07
80
0.0516
0.03
-0.07
-0.81
0.15
-0.06
81
0.0438
0.03
-0.06
-0.85
0.12
-0.06
82
0.0368
0.03
-0.06
-0.88
Quoted contract greeks from the delayed feed (not modeled here); the highlighted row is nearest to spot. Showing 15 strikes around the money — all 34 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.