Event risk before this expiration:Jobs report Fri, Oct 2 — 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 — 29 — is the max pain price.
Open interest by strike · Fri, Oct 9
■ calls (up)■ puts (down)T open contracts per strike for Fri, Oct 9.
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, Oct 9
■ calls (up)■ puts (down)Today's traded contracts per strike (delayed).
Implied volatility by strike · Fri, Oct 9
— call IV— put IVATM ≈ 22.3% · Quoted strikes only; illiquid wings with junk fits are dropped, not smoothed.
Gamma exposure by strike · Fri, Oct 9
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, Oct 9
Call Δ
Call Θ
Strike
Γ
Vega
Put Θ
Put Δ
0.98
-0.00
21
0.0180
0.00
-0.00
-0.03
0.97
-0.00
22
0.0349
0.00
-0.01
-0.04
0.96
-0.00
22.5
0.0511
0.01
-0.01
-0.06
0.94
-0.01
23
0.0790
0.01
-0.01
-0.09
0.90
-0.01
23.5
0.1258
0.01
-0.01
-0.15
0.83
-0.01
24
0.1935
0.01
-0.01
-0.24
0.71
-0.01
24.5
0.2647
0.02
-0.01
-0.37
0.57
-0.01
25
0.3167
0.02
-0.01
-0.52
0.41
-0.01
25.5
0.3200
0.02
-0.01
-0.67
0.27
-0.01
26
0.2680
0.02
-0.01
-0.80
0.16
-0.01
26.5
0.1950
0.01
-0.01
-0.88
0.10
-0.01
27
0.1310
0.01
-0.01
-0.93
0.06
-0.01
27.5
0.0873
0.01
-0.00
-0.95
0.04
-0.00
28
0.0606
0.01
-0.00
-0.97
0.03
-0.00
28.5
0.0446
0.00
-0.00
-0.97
Quoted contract greeks from the delayed feed (not modeled here); the highlighted row is nearest to spot. Showing 15 strikes around the money — all 24 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.