■ 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 — 530 — is the max pain price.
Open interest by strike · Fri, Sep 18
■ calls (up)■ puts (down)TMO 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 ≈ 26.5% · 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
0.95
-0.11
550
0.0021
0.15
-0.12
-0.05
0.93
-0.15
560
0.0030
0.20
-0.15
-0.07
0.90
-0.18
570
0.0040
0.27
-0.19
-0.10
0.86
-0.23
580
0.0053
0.34
-0.23
-0.14
0.80
-0.28
590
0.0068
0.42
-0.28
-0.20
0.73
-0.32
600
0.0083
0.50
-0.32
-0.28
0.64
-0.35
610
0.0096
0.56
-0.35
-0.36
0.54
-0.37
620
0.0103
0.59
-0.37
-0.46
0.49
-0.37
625
0.0104
0.59
-0.37
-0.51
0.44
-0.36
630
0.0102
0.59
-0.36
-0.56
0.34
-0.34
640
0.0095
0.55
-0.34
-0.66
0.30
-0.32
645
0.0089
0.52
-0.32
-0.71
0.26
-0.30
650
0.0083
0.48
-0.30
-0.75
0.19
-0.25
660
0.0068
0.41
-0.25
-0.81
0.14
-0.20
670
0.0054
0.33
-0.21
-0.87
Quoted contract greeks from the delayed feed (not modeled here); the highlighted row is nearest to spot. Showing 15 strikes around the money — all 45 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.