Event risk before this expiration:FOMC decision Wed, Oct 28 · Jobs report Fri, Nov 6 · CPI release Tue, Nov 10 · Jobs report Fri, Dec 4 · FOMC decision Wed, Dec 9 · CPI release Thu, Dec 10 — 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 — 200 — is the max pain price.
Open interest by strike · Fri, Dec 18
■ calls (up)■ puts (down)IBB open contracts per strike for Fri, Dec 18.
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, Dec 18
■ calls (up)■ puts (down)Today's traded contracts per strike (delayed).
Implied volatility by strike · Fri, Dec 18
— call IV— put IVATM ≈ 26.3% · Quoted strikes only; illiquid wings with junk fits are dropped, not smoothed.
Gamma exposure by strike · Fri, Dec 18
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, Dec 18
Call Δ
Call Θ
Strike
Γ
Vega
Put Θ
Put Δ
0.88
-0.04
187
0.0099
0.17
-0.04
-0.13
0.87
-0.04
188
0.0105
0.18
-0.04
-0.14
0.85
-0.04
189
0.0111
0.19
-0.04
-0.15
0.84
-0.04
190
0.0117
0.20
-0.04
-0.16
0.77
-0.05
195
0.0148
0.25
-0.06
-0.23
0.69
-0.06
200
0.0174
0.29
-0.07
-0.32
0.59
-0.07
205
0.0189
0.32
-0.07
-0.41
0.50
-0.07
210
0.0191
0.32
-0.08
-0.51
0.41
-0.07
215
0.0182
0.32
-0.08
-0.60
0.33
-0.07
220
0.0165
0.29
-0.07
-0.68
0.26
-0.07
225
0.0145
0.27
-0.07
-0.75
0.21
-0.06
230
0.0124
0.24
-0.06
-0.81
0.17
-0.05
235
0.0104
0.20
-0.06
-0.85
0.13
-0.05
240
0.0087
0.18
-0.05
-0.89
0.11
-0.04
245
0.0072
0.15
-0.05
-0.92
Quoted contract greeks from the delayed feed (not modeled here); the highlighted row is nearest to spot. Showing 15 strikes around the money — all 55 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.