■ 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 — 400 — is the max pain price.
Open interest by strike · Fri, Sep 11
■ calls (up)■ puts (down)UNH open contracts per strike for Fri, Sep 11.
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 11
■ calls (up)■ puts (down)Today's traded contracts per strike (delayed).
Implied volatility by strike · Fri, Sep 11
— call IV— put IVATM ≈ 27.0% · Quoted strikes only; illiquid wings with junk fits are dropped, not smoothed.
Gamma exposure by strike · Fri, Sep 11
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 11
Call Δ
Call Θ
Strike
Γ
Vega
Put Θ
Put Δ
0.81
-0.20
382.5
0.0116
0.23
-0.20
-0.20
0.78
-0.22
385
0.0127
0.25
-0.22
-0.23
0.74
-0.23
387.5
0.0138
0.27
-0.24
-0.26
0.71
-0.25
390
0.0149
0.29
-0.25
-0.29
0.67
-0.26
392.5
0.0158
0.30
-0.26
-0.33
0.63
-0.27
395
0.0166
0.32
-0.27
-0.37
0.59
-0.28
397.5
0.0172
0.33
-0.28
-0.42
0.54
-0.28
400
0.0176
0.33
-0.28
-0.46
0.50
-0.28
402.5
0.0178
0.34
-0.29
-0.51
0.46
-0.28
405
0.0177
0.33
-0.28
-0.55
0.41
-0.27
407.5
0.0174
0.33
-0.28
-0.59
0.37
-0.27
410
0.0169
0.32
-0.27
-0.64
0.33
-0.25
412.5
0.0162
0.30
-0.26
-0.68
0.29
-0.24
415
0.0153
0.29
-0.25
-0.72
0.23
-0.21
420
0.0133
0.25
-0.22
-0.79
Quoted contract greeks from the delayed feed (not modeled here); the highlighted row is nearest to spot. Showing 15 strikes around the money — all 52 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.