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 — 1700 — is the max pain price.
Open interest by strike · Fri, Aug 21
■ calls (up)■ puts (down)ASML 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 ≈ 49.2% · 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
-1.97
1640
0.0019
1.09
-1.98
-0.25
0.71
-2.11
1660
0.0020
1.18
-2.12
-0.29
0.67
-2.23
1680
0.0021
1.24
-2.25
-0.34
0.65
-2.26
1685
0.0022
1.26
-2.27
-0.35
0.62
-2.33
1700
0.0022
1.30
-2.34
-0.38
0.57
-2.39
1720
0.0023
1.34
-2.40
-0.43
0.54
-2.42
1735
0.0024
1.35
-2.43
-0.46
0.53
-2.42
1740
0.0024
1.36
-2.44
-0.48
0.50
-2.42
1750
0.0024
1.36
-2.44
-0.50
0.48
-2.42
1760
0.0024
1.36
-2.44
-0.52
0.43
-2.38
1780
0.0023
1.34
-2.40
-0.57
0.41
-2.36
1790
0.0023
1.33
-2.38
-0.59
0.39
-2.32
1800
0.0023
1.31
-2.34
-0.61
0.35
-2.23
1820
0.0022
1.26
-2.26
-0.66
0.29
-2.07
1850
0.0020
1.17
-2.09
-0.72
Quoted contract greeks from the delayed feed (not modeled here); the highlighted row is nearest to spot. Showing 15 strikes around the money — all 60 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.