■ 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 — 48 — is the max pain price.
Open interest by strike · Fri, Nov 20
■ calls (up)■ puts (down)UNFI 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 ≈ 47.5% · 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
0.79
-0.02
41
0.0232
0.07
-0.02
-0.21
0.77
-0.02
42
0.0252
0.08
-0.02
-0.23
0.74
-0.02
43
0.0270
0.08
-0.02
-0.26
0.71
-0.02
44
0.0287
0.09
-0.02
-0.29
0.68
-0.02
45
0.0302
0.09
-0.02
-0.33
0.65
-0.02
46
0.0315
0.09
-0.02
-0.36
0.61
-0.02
47
0.0326
0.10
-0.02
-0.39
0.58
-0.02
48
0.0334
0.10
-0.02
-0.43
0.55
-0.02
49
0.0340
0.10
-0.02
-0.46
0.51
-0.02
50
0.0343
0.10
-0.02
-0.50
0.35
-0.02
55
0.0323
0.09
-0.02
-0.66
0.23
-0.02
60
0.0264
0.08
-0.02
-0.79
0.14
-0.01
65
0.0195
0.06
-0.01
-0.89
0.09
-0.01
70
0.0134
0.04
-0.01
-0.95
0.05
-0.01
75
0.0089
0.03
-0.00
-0.99
Quoted contract greeks from the delayed feed (not modeled here); the highlighted row is nearest to spot. Showing 15 strikes around the money — all 26 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.