■ 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 — 28 — is the max pain price.
Open interest by strike · Fri, Nov 20
■ calls (up)■ puts (down)RDWR 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 ≈ 49.2% · 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
0.82
-0.01
22
0.0267
0.04
-0.01
-0.17
0.79
-0.01
23
0.0309
0.04
-0.01
-0.20
0.76
-0.01
24
0.0356
0.05
-0.01
-0.23
0.72
-0.01
25
0.0405
0.05
-0.01
-0.27
0.68
-0.01
26
0.0454
0.05
-0.01
-0.31
0.63
-0.01
27
0.0496
0.06
-0.01
-0.36
0.58
-0.01
28
0.0526
0.06
-0.01
-0.41
0.52
-0.01
29
0.0539
0.06
-0.01
-0.47
0.47
-0.01
30
0.0534
0.06
-0.01
-0.52
0.42
-0.01
31
0.0517
0.06
-0.01
-0.57
0.38
-0.01
32
0.0491
0.06
-0.01
-0.61
0.35
-0.01
33
0.0462
0.06
-0.01
-0.64
0.22
-0.01
39
0.0308
0.04
-0.01
-0.78
0.21
-0.01
40
0.0290
0.04
-0.01
-0.79
0.16
-0.01
45
0.0219
0.04
-0.01
-0.84
Quoted contract greeks from the delayed feed (not modeled here); the highlighted row is nearest to spot. Showing 15 strikes around the money — all 17 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.