■ 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 — 46 — is the max pain price.
Open interest by strike · Fri, Aug 21
■ calls (up)■ puts (down)NVO open contracts per strike for Fri, Aug 21.
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, Aug 21
■ calls (up)■ puts (down)Today's traded contracts per strike (delayed).
Implied volatility by strike · Fri, Aug 21
— call IV— put IVATM ≈ 27.4% · Quoted strikes only; illiquid wings with junk fits are dropped, not smoothed.
Gamma exposure by strike · Fri, Aug 21
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, Aug 21
Call Δ
Call Θ
Strike
Γ
Vega
Put Θ
Put Δ
1.00
-0.00
42.5
0.0080
0.00
-0.01
-0.04
0.99
-0.00
43
0.0252
0.00
-0.02
-0.08
0.97
-0.01
43.5
0.0623
0.00
-0.03
-0.13
0.92
-0.03
44
0.1218
0.01
-0.04
-0.20
0.85
-0.04
44.5
0.1967
0.01
-0.04
-0.28
0.73
-0.06
45
0.2642
0.02
-0.05
-0.40
0.59
-0.07
45.5
0.2936
0.02
-0.06
-0.52
0.45
-0.06
46
0.2713
0.02
-0.06
-0.65
0.33
-0.05
46.5
0.2245
0.02
-0.05
-0.75
0.24
-0.04
47
0.1764
0.02
-0.04
-0.83
0.17
-0.03
47.5
0.1364
0.02
-0.03
-0.89
0.13
-0.03
48
0.1044
0.01
-0.02
-0.93
0.09
-0.02
48.5
0.0804
0.01
-0.02
-0.95
0.07
-0.02
49
0.0626
0.01
-0.01
-0.97
0.06
-0.02
49.5
0.0495
0.01
-0.01
-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 43 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.