Event risk before this expiration:Jobs report Fri, Oct 2 · CPI release Wed, Oct 14 — macro releases historically overwhelm pinning effects; max pain reads weakest in event weeks.
■ 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 — 170 — is the max pain price.
Open interest by strike · Fri, Oct 16
■ calls (up)■ puts (down)CINF open contracts per strike for Fri, Oct 16.
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 16
■ calls (up)■ puts (down)Today's traded contracts per strike (delayed).
Implied volatility by strike · Fri, Oct 16
— call IV— put IVATM ≈ 18.1% · Quoted strikes only; illiquid wings with junk fits are dropped, not smoothed.
Gamma exposure by strike · Fri, Oct 16
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 16
Call Δ
Call Θ
Strike
Γ
Vega
Put Θ
Put Δ
0.98
-0.02
145
0.0047
0.02
-0.02
-0.04
0.96
-0.03
150
0.0097
0.04
-0.03
-0.06
0.92
-0.04
155
0.0182
0.07
-0.04
-0.10
0.83
-0.05
160
0.0300
0.12
-0.05
-0.18
0.67
-0.06
165
0.0423
0.17
-0.06
-0.34
0.45
-0.06
170
0.0479
0.18
-0.06
-0.57
0.24
-0.05
175
0.0366
0.15
-0.05
-0.78
0.13
-0.04
180
0.0224
0.10
-0.04
-0.90
0.07
-0.03
185
0.0133
0.07
-0.02
-0.95
0.04
-0.02
190
0.0081
0.05
-0.01
-0.98
0.01
-0.01
210
0.0017
0.01
-0.00
-1.00
Quoted contract greeks from the delayed feed (not modeled here); the highlighted row is nearest to spot. 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.