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 — 340 — is the max pain price.
Open interest by strike · Fri, Nov 20
■ calls (up)■ puts (down)RS 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 ≈ 29.4% · 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
-0.04
260
0.0007
0.10
-0.04
-0.03
0.97
-0.04
270
0.0008
0.13
-0.04
-0.03
0.91
-0.08
320
0.0024
0.29
-0.08
-0.10
0.89
-0.09
330
0.0030
0.33
-0.09
-0.12
0.86
-0.10
340
0.0036
0.39
-0.10
-0.15
0.82
-0.11
350
0.0044
0.46
-0.11
-0.19
0.72
-0.13
370
0.0062
0.58
-0.13
-0.29
0.50
-0.14
400
0.0081
0.69
-0.14
-0.51
0.42
-0.14
410
0.0080
0.67
-0.14
-0.59
0.34
-0.13
420
0.0077
0.64
-0.13
-0.67
0.28
-0.11
430
0.0070
0.58
-0.12
-0.74
0.17
-0.09
450
0.0052
0.44
-0.10
-0.85
0.10
-0.06
470
0.0035
0.30
-0.07
-0.93
0.03
-0.02
520
0.0011
0.11
—
-1.00
Quoted contract greeks from the delayed feed (not modeled here); the highlighted row is nearest to spot. Showing 14 strikes around the money — all 18 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.