■ 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 — 235 — is the max pain price.
Open interest by strike · Fri, Sep 25
■ calls (up)■ puts (down)CAH open contracts per strike for Fri, Sep 25.
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 25
■ calls (up)■ puts (down)Today's traded contracts per strike (delayed).
Implied volatility by strike · Fri, Sep 25
— call IV— put IVATM ≈ 24.9% · Quoted strikes only; illiquid wings with junk fits are dropped, not smoothed.
Gamma exposure by strike · Fri, Sep 25
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 25
Call Δ
Call Θ
Strike
Γ
Vega
Put Θ
Put Δ
0.95
-0.03
200
0.0041
0.08
-0.03
-0.05
0.93
-0.04
205
0.0056
0.10
-0.04
-0.07
0.91
-0.05
210
0.0077
0.13
-0.05
-0.10
0.86
-0.06
215
0.0103
0.17
-0.06
-0.14
0.81
-0.07
220
0.0134
0.21
-0.07
-0.20
0.74
-0.08
225
0.0166
0.25
-0.09
-0.27
0.65
-0.09
230
0.0194
0.28
-0.10
-0.36
0.55
-0.10
235
0.0210
0.30
-0.10
-0.47
0.44
-0.10
240
0.0210
0.30
-0.10
-0.57
0.34
-0.09
245
0.0195
0.28
-0.10
-0.68
0.26
-0.08
250
0.0170
0.25
-0.09
-0.77
0.19
-0.07
255
0.0140
0.21
-0.07
-0.84
0.14
-0.06
260
0.0112
0.17
-0.07
-0.89
0.10
-0.05
265
0.0088
0.14
-0.06
-0.94
0.08
-0.04
270
0.0068
0.11
-0.05
-0.97
Quoted contract greeks from the delayed feed (not modeled here); the highlighted row is nearest to spot. Showing 15 strikes around the money — all 19 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.