■ 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 — 325 — is the max pain price.
Open interest by strike · Fri, Aug 28
■ calls (up)■ puts (down)HLT 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 ≈ 22.4% · 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
0.98
-0.06
315
0.0058
0.01
-0.07
-0.02
0.97
-0.09
317.5
0.0086
0.02
-0.10
-0.03
0.95
-0.14
320
0.0131
0.03
-0.14
-0.05
0.92
-0.20
322.5
0.0200
0.04
-0.21
-0.08
0.88
-0.30
325
0.0306
0.05
-0.30
-0.12
0.80
-0.43
327.5
0.0457
0.07
-0.43
-0.20
0.68
-0.56
330
0.0632
0.09
-0.56
-0.32
0.51
-0.62
332.5
0.0741
0.10
-0.62
-0.49
0.33
-0.53
335
0.0680
0.09
-0.54
-0.68
0.19
-0.36
337.5
0.0493
0.07
-0.36
-0.82
0.10
-0.22
340
0.0310
0.04
-0.21
-0.90
0.06
-0.13
342.5
0.0186
0.03
-0.12
-0.95
0.03
-0.07
345
0.0111
0.02
-0.07
-0.97
0.02
-0.04
347.5
0.0067
0.01
-0.04
-0.98
0.01
-0.03
350
0.0042
0.01
-0.03
-0.99
Quoted contract greeks from the delayed feed (not modeled here); the highlighted row is nearest to spot. Showing 15 strikes around the money — all 33 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.