Event risk before this expiration:FOMC decision Wed, Oct 28 — 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 — 210 — is the max pain price.
Open interest by strike · Fri, Oct 30
■ calls (up)■ puts (down)TSEM open contracts per strike for Fri, Oct 30.
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, Oct 30
■ calls (up)■ puts (down)Today's traded contracts per strike (delayed).
Implied volatility by strike · Fri, Oct 30
— call IV— put IVATM ≈ 90.5% · Quoted strikes only; illiquid wings with junk fits are dropped, not smoothed.
Gamma exposure by strike · Fri, Oct 30
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, Oct 30
Call Δ
Call Θ
Strike
Γ
Vega
Put Θ
Put Δ
0.94
-0.19
135
0.0048
0.03
-0.19
-0.06
0.91
-0.25
140
0.0067
0.04
-0.25
-0.09
0.88
-0.32
145
0.0091
0.05
-0.33
-0.13
0.82
-0.40
150
0.0119
0.06
-0.41
-0.18
0.76
-0.48
155
0.0149
0.07
-0.48
-0.25
0.67
-0.54
160
0.0176
0.08
-0.55
-0.33
0.58
-0.58
165
0.0194
0.09
-0.58
-0.42
0.53
-0.58
167.5
0.0199
0.09
-0.59
-0.47
0.48
-0.58
170
0.0201
0.09
-0.59
-0.52
0.38
-0.55
175
0.0194
0.09
-0.56
-0.62
0.34
-0.53
177.5
0.0185
0.09
-0.53
-0.67
0.30
-0.49
180
0.0175
0.08
-0.50
-0.71
0.26
-0.46
182.5
0.0163
0.07
-0.46
-0.75
0.22
-0.42
185
0.0150
0.07
-0.43
-0.78
0.19
-0.39
187.5
0.0137
0.06
-0.39
-0.81
Quoted contract greeks from the delayed feed (not modeled here); the highlighted row is nearest to spot. Showing 15 strikes around the money — all 55 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.