Event risk before this expiration:Jobs report Fri, Aug 7 · 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 — 140 — is the max pain price.
Open interest by strike · Fri, Aug 21
■ calls (up)■ puts (down)PEP 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 ≈ 24.9% · 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
0.82
-0.05
132
0.0304
0.09
-0.05
-0.18
0.79
-0.06
133
0.0340
0.10
-0.06
-0.21
0.76
-0.06
134
0.0374
0.11
-0.06
-0.25
0.72
-0.07
135
0.0404
0.11
-0.07
-0.29
0.67
-0.07
136
0.0430
0.12
-0.07
-0.33
0.63
-0.07
137
0.0451
0.13
-0.08
-0.38
0.58
-0.08
138
0.0465
0.13
-0.08
-0.42
0.54
-0.08
139
0.0473
0.13
-0.08
-0.47
0.49
-0.08
140
0.0474
0.13
-0.08
-0.52
0.44
-0.08
141
0.0468
0.13
-0.08
-0.57
0.40
-0.08
142
0.0456
0.13
-0.08
-0.61
0.35
-0.07
143
0.0438
0.13
-0.08
-0.66
0.31
-0.07
144
0.0415
0.12
-0.07
-0.70
0.28
-0.07
145
0.0389
0.11
-0.07
-0.74
0.24
-0.06
146
0.0361
0.10
-0.07
-0.77
Quoted contract greeks from the delayed feed (not modeled here); the highlighted row is nearest to spot. Showing 15 strikes around the money — all 48 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.