Event risk before this expiration:Jobs report Fri, Oct 2 · CPI release Wed, Oct 14 · 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 — 900 — is the max pain price.
Open interest by strike · Fri, Oct 30
■ calls (up)■ puts (down)COST 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 ≈ 22.5% · 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
0.74
-0.27
860
0.0047
1.00
-0.27
-0.27
0.71
-0.28
865
0.0050
1.05
-0.28
-0.30
0.69
-0.29
870
0.0052
1.08
-0.30
-0.32
0.66
-0.30
875
0.0053
1.11
-0.30
-0.35
0.63
-0.31
880
0.0055
1.15
-0.31
-0.38
0.60
-0.32
885
0.0056
1.17
-0.32
-0.41
0.57
-0.32
890
0.0057
1.19
-0.33
-0.44
0.55
-0.33
895
0.0058
1.20
-0.33
-0.47
0.52
-0.33
900
0.0058
1.21
-0.33
-0.49
0.49
-0.33
905
0.0058
1.21
-0.33
-0.52
0.46
-0.32
910
0.0058
1.21
-0.33
-0.55
0.43
-0.32
915
0.0058
1.19
-0.33
-0.58
0.40
-0.32
920
0.0057
1.18
-0.32
-0.61
0.38
-0.31
925
0.0056
1.16
-0.32
-0.64
0.35
-0.30
930
0.0054
1.12
-0.31
-0.67
Quoted contract greeks from the delayed feed (not modeled here); the highlighted row is nearest to spot. Showing 15 strikes around the money — all 59 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.