■ 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 — 340 — is the max pain price.
Open interest by strike · Fri, Sep 18
■ calls (up)■ puts (down)HD 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 ≈ 30.7% · 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
0.85
-0.09
315
0.0063
0.28
-0.11
-0.17
0.82
-0.11
320
0.0073
0.31
-0.13
-0.20
0.78
-0.13
325
0.0082
0.35
-0.14
-0.24
0.73
-0.14
330
0.0091
0.39
-0.15
-0.29
0.68
-0.15
335
0.0099
0.42
-0.16
-0.34
0.63
-0.16
340
0.0104
0.44
-0.16
-0.39
0.58
-0.17
345
0.0108
0.46
-0.17
-0.44
0.52
-0.17
350
0.0110
0.47
-0.17
-0.49
0.47
-0.17
355
0.0110
0.47
-0.16
-0.55
0.41
-0.17
360
0.0108
0.46
-0.16
-0.60
0.36
-0.16
365
0.0104
0.45
-0.15
-0.65
0.32
-0.15
370
0.0098
0.42
-0.14
-0.70
0.27
-0.14
375
0.0092
0.40
-0.12
-0.74
0.23
-0.13
380
0.0084
0.36
-0.11
-0.78
0.19
-0.11
385
0.0076
0.33
-0.09
-0.82
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.