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 — 47.5 — is the max pain price.
Open interest by strike · Fri, Oct 30
■ calls (up)■ puts (down)FISV 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 ≈ 52.6% · 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
0.95
-0.03
44
0.0464
0.01
-0.03
-0.05
0.93
-0.04
44.5
0.0637
0.01
-0.04
-0.07
0.90
-0.05
45
0.0868
0.01
-0.06
-0.10
0.86
-0.07
45.5
0.1163
0.01
-0.07
-0.15
0.80
-0.09
46
0.1510
0.01
-0.09
-0.21
0.72
-0.11
46.5
0.1866
0.01
-0.11
-0.29
0.62
-0.12
47
0.2146
0.02
-0.13
-0.39
0.51
-0.13
47.5
0.2257
0.02
-0.13
-0.50
0.40
-0.12
48
0.2162
0.02
-0.13
-0.62
0.30
-0.11
48.5
0.1908
0.01
-0.11
-0.71
0.22
-0.10
49
0.1584
0.01
-0.10
-0.79
0.17
-0.08
49.5
0.1264
0.01
-0.08
-0.85
0.12
-0.06
50
0.0987
0.01
-0.06
-0.90
0.07
-0.04
51
0.0588
0.01
-0.04
-0.95
0.04
-0.03
52
0.0352
0.00
-0.03
-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 38 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.