Event risk before this expiration:FOMC decision Wed, Oct 28 · Jobs report Fri, Nov 6 · CPI release Tue, Nov 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 — 230 — is the max pain price.
Open interest by strike · Fri, Nov 20
■ calls (up)■ puts (down)RMD open contracts per strike for Fri, Nov 20.
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, Nov 20
■ calls (up)■ puts (down)Today's traded contracts per strike (delayed).
Implied volatility by strike · Fri, Nov 20
— call IV— put IVATM ≈ 38.2% · Quoted strikes only; illiquid wings with junk fits are dropped, not smoothed.
Gamma exposure by strike · Fri, Nov 20
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, Nov 20
Call Δ
Call Θ
Strike
Γ
Vega
Put Θ
Put Δ
0.97
-0.03
180
0.0021
0.06
-0.04
-0.04
0.96
-0.04
185
0.0028
0.07
-0.05
-0.05
0.94
-0.05
190
0.0036
0.09
-0.06
-0.07
0.92
-0.06
195
0.0046
0.11
-0.07
-0.09
0.90
-0.07
200
0.0058
0.14
-0.08
-0.11
0.82
-0.10
210
0.0087
0.19
-0.11
-0.18
0.72
-0.13
220
0.0118
0.25
-0.13
-0.29
0.59
-0.15
230
0.0139
0.29
-0.15
-0.42
0.45
-0.15
240
0.0143
0.29
-0.15
-0.56
0.32
-0.14
250
0.0128
0.27
-0.13
-0.69
0.22
-0.11
260
0.0103
0.22
-0.11
-0.79
0.14
-0.09
270
0.0078
0.17
-0.09
-0.86
0.10
-0.07
280
0.0056
0.13
-0.07
-0.91
0.07
-0.05
290
0.0040
0.10
-0.05
-0.95
Quoted contract greeks from the delayed feed (not modeled here); the highlighted row is nearest to spot. Showing 14 strikes around the money — all 15 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.