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 — 265 — is the max pain price.
Open interest by strike · Fri, Oct 30
■ calls (up)■ puts (down)DDOG 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 ≈ 76.5% · 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
0.78
-0.87
265
0.0124
0.09
-0.88
-0.22
0.75
-0.95
267.5
0.0134
0.10
-0.95
-0.25
0.71
-1.02
270
0.0144
0.10
-1.02
-0.29
0.68
-1.08
272.5
0.0153
0.11
-1.08
-0.33
0.64
-1.13
275
0.0160
0.11
-1.14
-0.36
0.59
-1.17
277.5
0.0166
0.12
-1.17
-0.41
0.55
-1.19
280
0.0170
0.12
-1.19
-0.45
0.51
-1.19
282.5
0.0172
0.12
-1.20
-0.49
0.47
-1.18
285
0.0173
0.12
-1.19
-0.54
0.42
-1.16
287.5
0.0171
0.12
-1.16
-0.58
0.38
-1.12
290
0.0167
0.11
-1.12
-0.62
0.34
-1.06
292.5
0.0161
0.11
-1.06
-0.66
0.30
-1.00
295
0.0154
0.10
-1.00
-0.70
0.27
-0.92
297.5
0.0146
0.10
-0.92
-0.74
0.23
-0.84
300
0.0136
0.09
-0.84
-0.77
Quoted contract greeks from the delayed feed (not modeled here); the highlighted row is nearest to spot. Showing 15 strikes around the money — all 48 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.