■ 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 — 187.5 — is the max pain price.
Open interest by strike · Fri, Oct 23
■ calls (up)■ puts (down)WDAY 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 ≈ 52.5% · 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
0.89
-0.17
167.5
0.0118
0.06
-0.17
-0.11
0.86
-0.19
170
0.0142
0.07
-0.19
-0.14
0.82
-0.22
172.5
0.0169
0.08
-0.22
-0.18
0.78
-0.25
175
0.0198
0.09
-0.25
-0.22
0.72
-0.27
177.5
0.0224
0.10
-0.28
-0.28
0.67
-0.30
180
0.0247
0.11
-0.30
-0.34
0.60
-0.32
182.5
0.0263
0.11
-0.32
-0.40
0.53
-0.33
185
0.0271
0.12
-0.33
-0.47
0.47
-0.33
187.5
0.0271
0.12
-0.33
-0.54
0.40
-0.32
190
0.0263
0.11
-0.32
-0.60
0.34
-0.30
192.5
0.0248
0.11
-0.30
-0.67
0.28
-0.28
195
0.0228
0.10
-0.28
-0.72
0.23
-0.25
197.5
0.0205
0.09
-0.25
-0.77
0.19
-0.22
200
0.0180
0.08
-0.22
-0.81
0.16
-0.20
202.5
0.0156
0.07
-0.20
-0.85
Quoted contract greeks from the delayed feed (not modeled here); the highlighted row is nearest to spot. Showing 15 strikes around the money — all 37 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.