Event risk before this expiration:FOMC decision Wed, Oct 28 — 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 — 12.5 — is the max pain price.
Open interest by strike · Fri, Oct 30
■ calls (up)■ puts (down)REPL open contracts per strike for Fri, Oct 30.
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 30
■ calls (up)■ puts (down)Today's traded contracts per strike (delayed).
Implied volatility by strike · Fri, Oct 30
— call IV— put IVATM ≈ 110.4% · Quoted strikes only; illiquid wings with junk fits are dropped, not smoothed.
Gamma exposure by strike · Fri, Oct 30
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 30
Call Δ
Call Θ
Strike
Γ
Vega
Put Θ
Put Δ
0.97
-0.02
6
0.0162
0.00
-0.02
-0.03
0.95
-0.02
7
0.0263
0.00
-0.02
-0.05
0.93
-0.03
8
0.0438
0.00
-0.03
-0.07
0.86
-0.03
9.5
0.1031
0.00
-0.03
-0.14
0.82
-0.04
10
0.1410
0.00
-0.04
-0.18
0.75
-0.04
10.5
0.1920
0.01
-0.04
-0.25
0.64
-0.04
11
0.2453
0.01
-0.04
-0.36
0.51
-0.04
11.5
0.2643
0.01
-0.04
-0.49
0.40
-0.05
12
0.2375
0.01
-0.05
-0.60
0.32
-0.05
12.5
0.1980
0.01
-0.05
-0.69
0.26
-0.05
13
0.1634
0.01
-0.05
-0.74
0.22
-0.04
13.5
0.1364
0.01
-0.04
-0.78
0.19
-0.04
14
0.1155
0.00
-0.04
-0.81
0.17
-0.04
14.5
0.0993
0.00
-0.04
-0.83
0.15
-0.04
15
0.0866
0.00
-0.04
-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 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.