Event risk before this expiration:FOMC decision Wed, Oct 28 · Jobs report Fri, Nov 6 · CPI release Tue, Nov 10 · Jobs report Fri, Dec 4 · FOMC decision Wed, Dec 9 · CPI release Thu, Dec 10 — 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 — 87.5 — is the max pain price.
Open interest by strike · Fri, Aug 20
■ calls (up)■ puts (down)SWK open contracts per strike for Fri, Aug 20.
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 20
■ calls (up)■ puts (down)Today's traded contracts per strike (delayed).
Implied volatility by strike · Fri, Aug 20
— call IV— put IVATM ≈ 35.9% · Quoted strikes only; illiquid wings with junk fits are dropped, not smoothed.
Gamma exposure by strike · Fri, Aug 20
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 20
Call Δ
Call Θ
Strike
Γ
Vega
Put Θ
Put Δ
0.91
-0.01
60
0.0055
0.13
-0.01
-0.10
0.87
-0.01
65
0.0069
0.17
-0.01
-0.14
0.82
-0.01
70
0.0084
0.21
-0.01
-0.18
0.77
-0.01
75
0.0099
0.24
-0.01
-0.23
0.71
-0.01
80
0.0113
0.28
-0.02
-0.29
0.65
-0.02
85
0.0124
0.30
-0.02
-0.36
0.61
-0.02
87.5
0.0128
0.31
-0.02
-0.39
0.58
-0.02
90
0.0131
0.32
-0.02
-0.42
0.55
-0.02
92.5
0.0134
0.32
-0.02
-0.46
0.48
-0.02
97.5
0.0135
0.32
-0.02
-0.52
0.45
-0.02
100
0.0134
0.32
-0.02
-0.55
0.40
-0.02
105
0.0131
0.31
-0.02
-0.61
0.34
-0.02
110
0.0125
0.30
-0.01
-0.67
0.30
-0.02
115
0.0117
0.28
-0.01
-0.72
0.26
-0.01
120
0.0108
0.26
-0.01
-0.76
Quoted contract greeks from the delayed feed (not modeled here); the highlighted row is nearest to spot. Showing 15 strikes around the money — all 17 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.