■ 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 — 220 — is the max pain price.
Open interest by strike · Fri, Oct 23
■ calls (up)■ puts (down)ACN 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 ≈ 51.7% · 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
0.96
-0.14
222.5
0.0076
0.01
-0.14
-0.04
0.94
-0.20
225
0.0110
0.02
-0.20
-0.06
0.92
-0.29
227.5
0.0157
0.03
-0.30
-0.08
0.88
-0.42
230
0.0218
0.04
-0.42
-0.12
0.82
-0.58
232.5
0.0292
0.05
-0.58
-0.18
0.74
-0.76
235
0.0369
0.06
-0.76
-0.26
0.64
-0.91
237.5
0.0434
0.07
-0.91
-0.36
0.53
-0.98
240
0.0465
0.07
-0.98
-0.47
0.41
-0.95
242.5
0.0454
0.07
-0.95
-0.59
0.31
-0.83
245
0.0406
0.06
-0.83
-0.69
0.22
-0.66
247.5
0.0336
0.05
-0.67
-0.78
0.15
-0.49
250
0.0262
0.04
-0.50
-0.85
0.10
-0.35
252.5
0.0197
0.03
-0.35
-0.90
0.07
-0.25
255
0.0143
0.03
-0.24
-0.93
0.05
-0.17
257.5
0.0102
0.02
-0.16
-0.95
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.