Event risk before this expiration:FOMC decision Wed, Oct 28 · Jobs report Fri, Nov 6 · CPI release Tue, Nov 10 · Jobs report Fri, Dec 4 · FOMC decision Wed, Dec 9 · CPI release Thu, Dec 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 — 70 — is the max pain price.
Open interest by strike · Fri, Dec 18
■ calls (up)■ puts (down)AMBA open contracts per strike for Fri, Dec 18.
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, Dec 18
■ calls (up)■ puts (down)Today's traded contracts per strike (delayed).
Implied volatility by strike · Fri, Dec 18
— call IV— put IVATM ≈ 76.3% · Quoted strikes only; illiquid wings with junk fits are dropped, not smoothed.
Gamma exposure by strike · Fri, Dec 18
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, Dec 18
Call Δ
Call Θ
Strike
Γ
Vega
Put Θ
Put Δ
0.85
-0.05
50
0.0107
0.06
-0.05
-0.15
0.81
-0.05
52.5
0.0124
0.07
-0.05
-0.18
0.78
-0.06
55
0.0141
0.07
-0.06
-0.22
0.73
-0.06
57.5
0.0157
0.08
-0.06
-0.26
0.69
-0.07
60
0.0171
0.09
-0.07
-0.31
0.64
-0.07
62.5
0.0183
0.09
-0.07
-0.35
0.59
-0.07
65
0.0192
0.10
-0.07
-0.40
0.54
-0.07
67.5
0.0198
0.10
-0.07
-0.45
0.49
-0.07
70
0.0200
0.10
-0.07
-0.50
0.44
-0.07
72.5
0.0200
0.10
-0.07
-0.55
0.40
-0.07
75
0.0197
0.10
-0.07
-0.60
0.35
-0.07
77.5
0.0191
0.09
-0.07
-0.64
0.31
-0.06
80
0.0183
0.09
-0.06
-0.68
0.28
-0.06
82.5
0.0173
0.09
-0.06
-0.72
0.24
-0.06
85
0.0162
0.08
-0.05
-0.75
Quoted contract greeks from the delayed feed (not modeled here); the highlighted row is nearest to spot. Showing 15 strikes around the money — all 37 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.