■ 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 — 525 — is the max pain price.
Open interest by strike · Fri, Sep 18
■ calls (up)■ puts (down)MA 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 ≈ 22.6% · 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
0.77
-0.16
540
0.0063
0.60
-0.16
-0.23
0.74
-0.17
545
0.0068
0.64
-0.17
-0.26
0.71
-0.18
550
0.0073
0.68
-0.18
-0.30
0.67
-0.19
555
0.0078
0.72
-0.19
-0.34
0.63
-0.19
560
0.0081
0.75
-0.20
-0.38
0.59
-0.20
565
0.0085
0.77
-0.21
-0.42
0.55
-0.20
570
0.0087
0.79
-0.21
-0.46
0.50
-0.20
575
0.0088
0.79
-0.21
-0.51
0.46
-0.20
580
0.0087
0.79
-0.21
-0.55
0.42
-0.20
585
0.0086
0.77
-0.20
-0.60
0.38
-0.19
590
0.0084
0.75
-0.20
-0.64
0.34
-0.19
595
0.0080
0.72
-0.19
-0.68
0.30
-0.18
600
0.0076
0.69
-0.18
-0.72
0.27
-0.17
605
0.0072
0.65
-0.17
-0.76
0.23
-0.16
610
0.0067
0.61
-0.16
-0.79
Quoted contract greeks from the delayed feed (not modeled here); the highlighted row is nearest to spot. Showing 15 strikes around the money — all 56 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.