■ 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 — 27 — is the max pain price.
Open interest by strike · Fri, Sep 18
■ calls (up)■ puts (down)SA 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 ≈ 72.3% · 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
0.90
-0.01
25
0.0251
0.02
-0.02
-0.10
0.86
-0.02
26
0.0311
0.02
-0.02
-0.13
0.82
-0.02
27
0.0372
0.03
-0.02
-0.17
0.78
-0.03
28
0.0431
0.03
-0.03
-0.22
0.73
-0.03
29
0.0483
0.03
-0.03
-0.27
0.67
-0.03
30
0.0525
0.04
-0.03
-0.33
0.61
-0.04
31
0.0555
0.04
-0.04
-0.39
0.56
-0.04
32
0.0572
0.04
-0.04
-0.44
0.50
-0.04
33
0.0575
0.04
-0.04
-0.50
0.45
-0.04
34
0.0567
0.04
-0.04
-0.55
0.40
-0.04
35
0.0549
0.04
-0.04
-0.60
0.35
-0.04
36
0.0523
0.04
-0.04
-0.65
0.31
-0.03
37
0.0492
0.04
-0.03
-0.70
0.27
-0.03
38
0.0458
0.03
-0.03
-0.73
0.23
-0.03
39
0.0422
0.03
-0.03
-0.77
Quoted contract greeks from the delayed feed (not modeled here); the highlighted row is nearest to spot. Showing 15 strikes around the money — all 24 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.