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 — 900 — is the max pain price.
Open interest by strike · Fri, Oct 23
■ calls (up)■ puts (down)COST open contracts per strike for Fri, Oct 23.
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 23
■ calls (up)■ puts (down)Today's traded contracts per strike (delayed).
Implied volatility by strike · Fri, Oct 23
— call IV— put IVATM ≈ 22.1% · Quoted strikes only; illiquid wings with junk fits are dropped, not smoothed.
Gamma exposure by strike · Fri, Oct 23
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 23
Call Δ
Call Θ
Strike
Γ
Vega
Put Θ
Put Δ
0.75
-0.29
860
0.0050
0.89
-0.30
-0.26
0.72
-0.31
865
0.0053
0.94
-0.31
-0.28
0.69
-0.32
870
0.0055
0.98
-0.33
-0.31
0.67
-0.33
875
0.0057
1.01
-0.34
-0.34
0.64
-0.34
880
0.0059
1.04
-0.35
-0.37
0.60
-0.35
885
0.0061
1.07
-0.36
-0.40
0.57
-0.36
890
0.0062
1.09
-0.36
-0.43
0.54
-0.36
895
0.0063
1.10
-0.37
-0.47
0.51
-0.36
900
0.0063
1.11
-0.37
-0.50
0.48
-0.36
905
0.0063
1.11
-0.37
-0.53
0.45
-0.36
910
0.0063
1.10
-0.37
-0.56
0.42
-0.35
915
0.0062
1.09
-0.37
-0.59
0.39
-0.35
920
0.0061
1.07
-0.36
-0.63
0.36
-0.34
925
0.0059
1.04
-0.35
-0.66
0.33
-0.33
930
0.0058
1.01
-0.34
-0.69
Quoted contract greeks from the delayed feed (not modeled here); the highlighted row is nearest to spot. Showing 15 strikes around the money — all 60 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.