■ 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 — 580 — is the max pain price.
Open interest by strike · Fri, Sep 18
■ calls (up)■ puts (down)DE 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 ≈ 37.5% · 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
0.82
-0.24
550
0.0032
0.57
-0.25
-0.19
0.78
-0.26
560
0.0036
0.63
-0.28
-0.22
0.74
-0.29
570
0.0040
0.69
-0.30
-0.26
0.70
-0.31
580
0.0043
0.74
-0.32
-0.30
0.65
-0.33
590
0.0046
0.79
-0.34
-0.35
0.60
-0.34
600
0.0048
0.82
-0.35
-0.40
0.56
-0.35
610
0.0050
0.84
-0.36
-0.45
0.50
-0.35
620
0.0051
0.85
-0.36
-0.50
0.46
-0.35
630
0.0050
0.84
-0.35
-0.55
0.41
-0.34
640
0.0050
0.83
-0.35
-0.60
0.32
-0.31
660
0.0046
0.76
-0.32
-0.70
0.28
-0.29
670
0.0043
0.71
-0.30
-0.74
0.24
-0.27
680
0.0040
0.66
-0.28
-0.78
0.18
-0.23
700
0.0033
0.56
-0.23
-0.84
0.13
-0.19
720
0.0026
0.45
-0.19
-0.90
Quoted contract greeks from the delayed feed (not modeled here); the highlighted row is nearest to spot. Showing 15 strikes around the money — all 44 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.