Event risk before this expiration:FOMC decision Wed, Oct 28 · Jobs report Fri, Nov 6 · CPI release Tue, Nov 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 — 180 — is the max pain price.
Open interest by strike · Fri, Nov 27
■ calls (up)■ puts (down)KLAC open contracts per strike for Fri, Nov 27.
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, Nov 27
■ calls (up)■ puts (down)Today's traded contracts per strike (delayed).
Implied volatility by strike · Fri, Nov 27
— call IV— put IVATM ≈ 61.8% · Quoted strikes only; illiquid wings with junk fits are dropped, not smoothed.
Gamma exposure by strike · Fri, Nov 27
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, Nov 27
Call Δ
Call Θ
Strike
Γ
Vega
Put Θ
Put Δ
0.91
-0.08
120
0.0056
0.07
-0.08
-0.10
0.87
-0.10
125
0.0071
0.09
-0.10
-0.13
0.83
-0.12
130
0.0088
0.11
-0.12
-0.17
0.78
-0.13
135
0.0105
0.13
-0.14
-0.22
0.72
-0.15
140
0.0121
0.15
-0.15
-0.28
0.65
-0.16
145
0.0134
0.17
-0.17
-0.35
0.58
-0.17
150
0.0142
0.17
-0.17
-0.42
0.51
-0.17
155
0.0146
0.18
-0.17
-0.50
0.43
-0.17
160
0.0146
0.17
-0.17
-0.57
0.37
-0.16
165
0.0140
0.17
-0.16
-0.64
0.30
-0.15
170
0.0131
0.16
-0.15
-0.70
0.25
-0.14
175
0.0118
0.14
-0.13
-0.76
0.20
-0.12
180
0.0105
0.13
-0.12
-0.80
0.16
-0.10
185
0.0091
0.11
-0.10
-0.84
0.13
-0.09
190
0.0078
0.09
-0.09
-0.87
Quoted contract greeks from the delayed feed (not modeled here); the highlighted row is nearest to spot. Showing 15 strikes around the money — all 27 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.