■ 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 — 210 — is the max pain price.
Open interest by strike · Fri, Sep 18
■ calls (up)■ puts (down)CR 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 ≈ 32.2% · 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
0.98
-0.08
165
0.0027
0.02
-0.08
-0.03
0.97
-0.09
170
0.0038
0.02
-0.09
-0.03
0.96
-0.11
175
0.0055
0.03
-0.11
-0.05
0.94
-0.13
180
0.0081
0.04
-0.13
-0.06
0.91
-0.16
185
0.0123
0.05
-0.16
-0.10
0.85
-0.19
190
0.0192
0.06
-0.19
-0.15
0.76
-0.23
195
0.0306
0.09
-0.23
-0.24
0.60
-0.24
200
0.0452
0.11
-0.24
-0.41
0.18
-0.16
210
0.0310
0.07
-0.16
-0.82
0.06
-0.08
220
0.0105
0.03
-0.08
-0.94
0.02
-0.05
230
0.0043
0.02
-0.05
-0.97
0.01
-0.03
240
0.0021
0.01
-0.03
-0.99
0.01
-0.02
250
0.0012
0.01
-0.02
-0.99
0.01
-0.01
260
0.0007
0.00
-0.01
-0.99
0.00
-0.01
270
0.0005
0.00
-0.01
-1.00
Quoted contract greeks from the delayed feed (not modeled here); the highlighted row is nearest to spot. Showing 15 strikes around the money — all 28 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.