Event risk before this expiration:FOMC decision Wed, Oct 28 · Jobs report Fri, Nov 6 — 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 — 370 — is the max pain price.
Open interest by strike · Fri, Nov 6
■ calls (up)■ puts (down)WDC open contracts per strike for Fri, Nov 6.
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 6
■ calls (up)■ puts (down)Today's traded contracts per strike (delayed).
Implied volatility by strike · Fri, Nov 6
— call IV— put IVATM ≈ 73.7% · Quoted strikes only; illiquid wings with junk fits are dropped, not smoothed.
Gamma exposure by strike · Fri, Nov 6
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 6
Call Δ
Call Θ
Strike
Γ
Vega
Put Θ
Put Δ
0.77
-0.63
317.5
0.0064
0.18
-0.64
-0.23
0.75
-0.66
320
0.0067
0.19
-0.66
-0.25
0.74
-0.68
322.5
0.0070
0.20
-0.69
-0.27
0.68
-0.74
330
0.0077
0.22
-0.75
-0.32
0.64
-0.78
335
0.0081
0.23
-0.78
-0.36
0.60
-0.80
340
0.0084
0.24
-0.81
-0.41
0.55
-0.82
345
0.0086
0.24
-0.82
-0.45
0.53
-0.82
347.5
0.0087
0.24
-0.82
-0.47
0.51
-0.82
350
0.0087
0.24
-0.82
-0.49
0.49
-0.82
352.5
0.0087
0.24
-0.82
-0.51
0.47
-0.81
355
0.0087
0.24
-0.82
-0.54
0.42
-0.80
360
0.0086
0.24
-0.80
-0.58
0.38
-0.78
365
0.0084
0.23
-0.78
-0.62
0.34
-0.75
370
0.0081
0.23
-0.75
-0.66
0.31
-0.71
375
0.0077
0.21
-0.71
-0.70
Quoted contract greeks from the delayed feed (not modeled here); the highlighted row is nearest to spot. Showing 15 strikes around the money — all 56 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.