Event risk before this expiration:Jobs report Fri, Oct 2 · CPI release Wed, Oct 14 — 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 — 24 — is the max pain price.
Open interest by strike · Fri, Oct 16
■ calls (up)■ puts (down)T open contracts per strike for Fri, Oct 16.
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 16
■ calls (up)■ puts (down)Today's traded contracts per strike (delayed).
Implied volatility by strike · Fri, Oct 16
— call IV— put IVATM ≈ 23.7% · Quoted strikes only; illiquid wings with junk fits are dropped, not smoothed.
Gamma exposure by strike · Fri, Oct 16
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 16
Call Δ
Call Θ
Strike
Γ
Vega
Put Θ
Put Δ
1.00
0.00
20
0.0065
0.00
-0.00
-0.01
0.99
-0.00
21
0.0152
0.00
-0.00
-0.03
0.97
-0.00
22
0.0347
0.00
-0.00
-0.06
0.93
-0.01
23
0.0873
0.01
-0.01
-0.12
0.88
-0.01
23.5
0.1350
0.01
-0.01
-0.18
0.81
-0.01
24
0.1955
0.02
-0.01
-0.27
0.69
-0.01
24.5
0.2533
0.02
-0.01
-0.38
0.56
-0.01
25
0.2887
0.03
-0.01
-0.51
0.41
-0.01
25.5
0.2859
0.02
-0.01
-0.64
0.28
-0.01
26
0.2462
0.02
-0.01
-0.76
0.18
-0.01
26.5
0.1873
0.02
-0.01
-0.85
0.11
-0.01
27
0.1304
0.01
-0.01
-0.91
0.07
-0.00
27.5
0.0868
0.01
-0.00
-0.94
0.04
-0.00
28
0.0572
0.01
-0.00
-0.96
0.03
-0.00
28.5
0.0380
0.00
-0.00
-0.98
Quoted contract greeks from the delayed feed (not modeled here); the highlighted row is nearest to spot. Showing 15 strikes around the money — all 33 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.