■ 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 — 295 — is the max pain price.
Open interest by strike · Fri, Aug 21
■ calls (up)■ puts (down)BWET 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 ≈ 88.3% · 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
0.75
-1.41
345
0.0063
0.16
-1.32
-0.27
0.72
-1.47
350
0.0067
0.17
-1.38
-0.30
0.69
-1.53
355
0.0071
0.18
-1.43
-0.34
0.65
-1.57
360
0.0074
0.19
-1.47
-0.37
0.61
-1.59
365
0.0077
0.20
-1.50
-0.41
0.57
-1.60
370
0.0079
0.20
-1.51
-0.45
0.53
-1.59
375
0.0080
0.20
-1.51
-0.48
0.49
-1.57
380
0.0081
0.21
-1.49
-0.52
0.41
-1.48
390
0.0080
0.20
-1.40
-0.60
0.37
-1.41
395
0.0078
0.20
-1.34
-0.64
0.33
-1.33
400
0.0075
0.19
-1.27
-0.67
0.29
-1.25
405
0.0072
0.18
-1.19
-0.71
0.26
-1.15
410
0.0068
0.17
-1.09
-0.74
0.23
-1.05
415
0.0064
0.16
-1.00
-0.77
0.20
-0.95
420
0.0059
0.14
-0.90
-0.80
Quoted contract greeks from the delayed feed (not modeled here); the highlighted row is nearest to spot. Showing 15 strikes around the money — all 59 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.