■ 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 — 260 — is the max pain price.
Open interest by strike · Fri, Sep 18
■ calls (up)■ puts (down)TXN 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 ≈ 36.7% · 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
0.91
-0.08
230
0.0060
0.10
-0.09
-0.09
0.88
-0.11
235
0.0078
0.13
-0.11
-0.12
0.84
-0.13
240
0.0098
0.16
-0.13
-0.16
0.78
-0.16
245
0.0119
0.20
-0.16
-0.22
0.71
-0.18
250
0.0138
0.22
-0.18
-0.29
0.64
-0.20
255
0.0153
0.25
-0.20
-0.36
0.56
-0.21
260
0.0162
0.26
-0.21
-0.44
0.52
-0.21
262.5
0.0163
0.26
-0.21
-0.48
0.48
-0.21
265
0.0163
0.26
-0.21
-0.53
0.40
-0.20
270
0.0158
0.25
-0.21
-0.61
0.33
-0.19
275
0.0148
0.24
-0.19
-0.68
0.26
-0.17
280
0.0133
0.21
-0.17
-0.75
0.20
-0.15
285
0.0115
0.19
-0.15
-0.81
0.15
-0.13
290
0.0097
0.16
-0.13
-0.85
0.12
-0.10
295
0.0080
0.13
-0.10
-0.89
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.