■ 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 — 940 — is the max pain price.
Open interest by strike · Fri, Sep 18
■ calls (up)■ puts (down)COST open contracts per strike for Fri, Sep 18.
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, Sep 18
■ calls (up)■ puts (down)Today's traded contracts per strike (delayed).
Implied volatility by strike · Fri, Sep 18
— call IV— put IVATM ≈ 22.3% · Quoted strikes only; illiquid wings with junk fits are dropped, not smoothed.
Gamma exposure by strike · Fri, Sep 18
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, Sep 18
Call Δ
Call Θ
Strike
Γ
Vega
Put Θ
Put Δ
0.75
-0.26
900
0.0042
1.04
-0.28
-0.25
0.73
-0.27
905
0.0044
1.09
-0.29
-0.28
0.71
-0.28
910
0.0046
1.13
-0.30
-0.30
0.66
-0.30
920
0.0049
1.20
-0.32
-0.35
0.61
-0.32
930
0.0052
1.26
-0.33
-0.40
0.58
-0.32
935
0.0052
1.28
-0.34
-0.43
0.56
-0.33
940
0.0053
1.29
-0.34
-0.45
0.50
-0.33
950
0.0054
1.31
-0.34
-0.51
0.48
-0.33
955
0.0054
1.30
-0.34
-0.54
0.45
-0.33
960
0.0054
1.30
-0.34
-0.56
0.42
-0.33
965
0.0053
1.28
-0.34
-0.59
0.40
-0.32
970
0.0052
1.26
-0.33
-0.62
0.35
-0.31
980
0.0050
1.22
-0.32
-0.67
0.30
-0.29
990
0.0047
1.15
-0.30
-0.72
0.26
-0.27
1000
0.0044
1.07
-0.28
-0.76
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.