Event risk before this expiration:FOMC decision Wed, Sep 16 · Jobs report Fri, Oct 2 · CPI release Wed, Oct 14 · 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 — 170 — is the max pain price.
Open interest by strike · Fri, Nov 20
■ calls (up)■ puts (down)CR 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 ≈ 36.2% · 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
0.91
-0.05
155
0.0036
0.14
-0.05
-0.09
0.89
-0.05
160
0.0043
0.16
-0.05
-0.10
0.87
-0.06
165
0.0051
0.18
-0.06
-0.13
0.85
-0.06
170
0.0061
0.21
-0.06
-0.15
0.78
-0.07
180
0.0083
0.26
-0.07
-0.22
0.69
-0.08
190
0.0107
0.31
-0.08
-0.31
0.63
-0.09
195
0.0118
0.33
-0.09
-0.37
0.57
-0.09
200
0.0125
0.35
-0.09
-0.43
0.44
-0.09
210
0.0129
0.35
-0.09
-0.56
0.33
-0.08
220
0.0117
0.32
-0.08
-0.68
0.24
-0.07
230
0.0098
0.28
-0.07
-0.77
0.18
-0.06
240
0.0078
0.23
-0.07
-0.84
0.10
-0.04
260
0.0048
0.16
-0.05
-0.93
0.08
-0.04
270
0.0038
0.13
-0.04
-0.95
0.05
-0.03
290
0.0025
0.09
-0.03
-0.98
Quoted contract greeks from the delayed feed (not modeled here); the highlighted row is nearest to spot. Showing 15 strikes around the money — all 28 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.