Event risk before this expiration:CPI release Wed, Aug 12 — macro releases historically overwhelm pinning effects; max pain reads weakest in event weeks.
■ 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 — 17 — is the max pain price.
Open interest by strike · Fri, Aug 21
■ calls (up)■ puts (down)DHT 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 ≈ 47.8% · 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
1.00
-0.01
12
0.0176
0.00
-0.01
-0.02
1.00
-0.01
13
0.0307
0.00
-0.01
-0.04
1.00
-0.01
14
0.0026
0.01
-0.01
-0.07
0.99
-0.00
15
0.0222
0.00
-0.01
-0.13
0.96
-0.01
16
0.0659
0.00
-0.02
-0.24
0.86
-0.01
17
0.1708
0.01
-0.02
-0.46
0.61
-0.03
18
0.2873
0.01
-0.02
-0.69
0.34
-0.03
19
0.2458
0.01
-0.01
-0.83
0.19
-0.02
20
0.1565
0.01
-0.01
-0.90
0.10
-0.01
21
0.0940
0.01
-0.01
-0.93
0.06
-0.01
22
0.0578
0.00
-0.01
-0.95
0.04
-0.01
23
0.0373
0.00
-0.00
-0.96
0.03
-0.01
24
0.0254
0.00
-0.00
-0.97
0.02
-0.01
25
0.0181
0.00
-0.00
-0.98
Quoted contract greeks from the delayed feed (not modeled here); the highlighted row is nearest to spot. Showing 14 strikes around the money — all 15 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.