■ 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 — 192.5 — is the max pain price.
Open interest by strike · Fri, Oct 23
■ calls (up)■ puts (down)PM 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 ≈ 40.0% · 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
0.90
-0.14
185
0.0119
0.06
-0.14
-0.10
0.87
-0.15
187.5
0.0147
0.07
-0.16
-0.13
0.84
-0.18
190
0.0180
0.08
-0.18
-0.16
0.79
-0.20
192.5
0.0216
0.09
-0.20
-0.21
0.74
-0.23
195
0.0253
0.10
-0.23
-0.26
0.67
-0.25
197.5
0.0286
0.12
-0.25
-0.33
0.60
-0.27
200
0.0310
0.13
-0.27
-0.41
0.52
-0.27
202.5
0.0322
0.13
-0.28
-0.49
0.44
-0.27
205
0.0320
0.13
-0.27
-0.57
0.36
-0.25
207.5
0.0305
0.12
-0.26
-0.65
0.29
-0.23
210
0.0278
0.11
-0.23
-0.72
0.23
-0.20
212.5
0.0244
0.10
-0.20
-0.78
0.18
-0.18
215
0.0208
0.09
-0.18
-0.83
0.14
-0.15
217.5
0.0173
0.07
-0.15
-0.87
0.11
-0.13
220
0.0143
0.06
-0.13
-0.90
Quoted contract greeks from the delayed feed (not modeled here); the highlighted row is nearest to spot. Showing 15 strikes around the money — all 26 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.