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 — 240 — is the max pain price.
Open interest by strike · Fri, Aug 21
■ calls (up)■ puts (down)TSEM 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 ≈ 95.4% · 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
0.78
-0.44
200
0.0064
0.14
-0.45
-0.22
0.75
-0.48
205
0.0070
0.15
-0.49
-0.25
0.71
-0.51
210
0.0076
0.16
-0.52
-0.29
0.69
-0.53
212.5
0.0078
0.17
-0.53
-0.31
0.67
-0.54
215
0.0080
0.17
-0.55
-0.33
0.62
-0.56
220
0.0085
0.18
-0.57
-0.38
0.58
-0.58
225
0.0088
0.18
-0.58
-0.42
0.53
-0.59
230
0.0089
0.18
-0.59
-0.47
0.49
-0.59
235
0.0090
0.19
-0.58
-0.51
0.45
-0.58
240
0.0090
0.18
-0.58
-0.55
0.36
-0.55
250
0.0085
0.17
-0.54
-0.64
0.29
-0.49
260
0.0078
0.16
-0.48
-0.71
0.23
-0.43
270
0.0068
0.14
-0.42
-0.77
0.17
-0.37
280
0.0058
0.12
-0.35
-0.83
0.15
-0.34
285
0.0053
0.11
-0.32
-0.85
Quoted contract greeks from the delayed feed (not modeled here); the highlighted row is nearest to spot. Showing 15 strikes around the money — all 41 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.