■ 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 — 46.5 — is the max pain price.
Open interest by strike · Fri, Aug 28
■ calls (up)■ puts (down)NVO open contracts per strike for Fri, Aug 28.
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 28
■ calls (up)■ puts (down)Today's traded contracts per strike (delayed).
Implied volatility by strike · Fri, Aug 28
— call IV— put IVATM ≈ 28.5% · Quoted strikes only; illiquid wings with junk fits are dropped, not smoothed.
Gamma exposure by strike · Fri, Aug 28
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 28
Call Δ
Call Θ
Strike
Γ
Vega
Put Θ
Put Δ
0.95
-0.02
42.5
0.0675
0.01
-0.02
-0.11
0.91
-0.02
43
0.0972
0.01
-0.02
-0.14
0.86
-0.03
43.5
0.1258
0.02
-0.03
-0.19
0.79
-0.03
44
0.1464
0.03
-0.03
-0.25
0.71
-0.03
44.5
0.1583
0.03
-0.03
-0.33
0.63
-0.03
45
0.1650
0.03
-0.04
-0.41
0.55
-0.04
45.5
0.1681
0.04
-0.04
-0.50
0.47
-0.04
46
0.1660
0.04
-0.04
-0.59
0.39
-0.03
46.5
0.1581
0.03
-0.04
-0.68
0.32
-0.03
47
0.1453
0.03
-0.04
-0.77
0.25
-0.03
47.5
0.1294
0.03
-0.03
-0.84
0.20
-0.02
48
0.1115
0.03
-0.03
-0.90
0.15
-0.02
48.5
0.0932
0.02
-0.02
-0.94
0.12
-0.02
49
0.0767
0.02
-0.01
-0.96
0.10
-0.02
49.5
0.0634
0.02
-0.01
-0.97
Quoted contract greeks from the delayed feed (not modeled here); the highlighted row is nearest to spot. Showing 15 strikes around the money — all 36 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.