■ 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 — 260 — is the max pain price.
Open interest by strike · Fri, Dec 18
■ calls (up)■ puts (down)NDSN open contracts per strike for Fri, Dec 18.
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, Dec 18
■ calls (up)■ puts (down)Today's traded contracts per strike (delayed).
Implied volatility by strike · Fri, Dec 18
— call IV— put IVATM ≈ 26.2% · Quoted strikes only; illiquid wings with junk fits are dropped, not smoothed.
Gamma exposure by strike · Fri, Dec 18
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, Dec 18
Call Δ
Call Θ
Strike
Γ
Vega
Put Θ
Put Δ
0.92
-0.04
240
0.0024
0.27
-0.04
-0.08
0.90
-0.04
250
0.0031
0.33
-0.04
-0.11
0.86
-0.05
260
0.0039
0.40
-0.05
-0.14
0.82
-0.06
270
0.0049
0.48
-0.06
-0.19
0.76
-0.06
280
0.0059
0.56
-0.07
-0.24
0.70
-0.07
290
0.0069
0.63
-0.07
-0.31
0.63
-0.07
300
0.0078
0.68
-0.07
-0.38
0.55
-0.07
310
0.0084
0.71
-0.08
-0.47
0.46
-0.07
320
0.0086
0.72
-0.08
-0.55
0.38
-0.07
330
0.0084
0.69
-0.07
-0.64
0.30
-0.06
340
0.0078
0.63
-0.07
-0.73
0.23
-0.05
350
0.0069
0.56
-0.06
-0.80
0.18
-0.05
360
0.0059
0.48
-0.05
-0.86
0.13
-0.04
370
0.0048
0.40
-0.04
-0.91
0.10
-0.03
380
0.0039
0.32
-0.03
-0.94
Quoted contract greeks from the delayed feed (not modeled here); the highlighted row is nearest to spot. Showing 15 strikes around the money — all 25 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.