Event risk before this expiration:FOMC decision Wed, Oct 28 · Jobs report Fri, Nov 6 · CPI release Tue, Nov 10 · Jobs report Fri, Dec 4 · FOMC decision Wed, Dec 9 · CPI release Thu, Dec 10 — macro releases historically overwhelm pinning effects; max pain reads weakest in event weeks.
■ 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 — 190 — is the max pain price.
Open interest by strike · Fri, Sep 17
■ calls (up)■ puts (down)COR open contracts per strike for Fri, Sep 17.
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 17
■ calls (up)■ puts (down)Today's traded contracts per strike (delayed).
Implied volatility by strike · Fri, Sep 17
— call IV— put IVATM ≈ 28.8% · Quoted strikes only; illiquid wings with junk fits are dropped, not smoothed.
Gamma exposure by strike · Fri, Sep 17
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 17
Call Δ
Call Θ
Strike
Γ
Vega
Put Θ
Put Δ
0.94
-0.00
210
0.0010
0.38
-0.02
-0.06
0.91
-0.01
230
0.0014
0.52
-0.03
-0.09
0.79
-0.03
280
0.0028
0.91
-0.04
-0.22
0.76
-0.04
290
0.0032
0.98
-0.05
-0.25
0.73
-0.04
300
0.0034
1.05
-0.05
-0.29
0.69
-0.04
310
0.0037
1.12
-0.05
-0.33
0.65
-0.04
320
0.0040
1.17
-0.05
-0.37
0.61
-0.05
330
0.0042
1.21
-0.05
-0.41
0.40
-0.05
380
0.0045
1.22
-0.05
-0.66
0.32
-0.04
400
0.0042
1.13
-0.05
-0.76
0.28
-0.04
410
0.0040
1.08
-0.04
-0.81
0.25
-0.04
420
0.0038
1.01
-0.04
-0.86
Quoted contract greeks from the delayed feed (not modeled here); the highlighted row is nearest to spot. Showing 12 strikes around the money — all 13 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.