■ 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 — 360 — is the max pain price.
Open interest by strike · Fri, Dec 18
■ calls (up)■ puts (down)WWD 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 ≈ 39.5% · 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
0.84
-0.08
300
0.0026
0.53
-0.09
-0.16
0.81
-0.09
310
0.0029
0.58
-0.10
-0.19
0.78
-0.10
320
0.0033
0.64
-0.11
-0.22
0.74
-0.11
330
0.0036
0.70
-0.12
-0.26
0.70
-0.12
340
0.0040
0.74
-0.12
-0.30
0.66
-0.12
350
0.0043
0.79
-0.13
-0.34
0.61
-0.13
360
0.0045
0.82
-0.13
-0.39
0.57
-0.13
370
0.0047
0.84
-0.13
-0.44
0.52
-0.13
380
0.0048
0.85
-0.13
-0.49
0.47
-0.13
390
0.0049
0.85
-0.13
-0.54
0.42
-0.13
400
0.0048
0.84
-0.13
-0.58
0.38
-0.12
410
0.0047
0.82
-0.12
-0.63
0.34
-0.12
420
0.0045
0.79
-0.12
-0.68
0.30
-0.11
430
0.0043
0.75
-0.11
-0.72
0.27
-0.10
440
0.0041
0.70
-0.11
-0.76
Quoted contract greeks from the delayed feed (not modeled here); the highlighted row is nearest to spot. Showing 15 strikes around the money — all 38 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.