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 — 43 — is the max pain price.
Open interest by strike · Fri, Dec 18
■ calls (up)■ puts (down)IBIT 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 ≈ 38.6% · 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
0.86
-0.01
39
0.0278
0.04
-0.01
-0.14
0.83
-0.01
40
0.0325
0.05
-0.02
-0.17
0.80
-0.02
41
0.0374
0.05
-0.02
-0.21
0.76
-0.02
42
0.0424
0.06
-0.02
-0.25
0.71
-0.02
43
0.0471
0.06
-0.02
-0.29
0.66
-0.02
44
0.0512
0.07
-0.02
-0.34
0.61
-0.02
45
0.0543
0.07
-0.02
-0.40
0.55
-0.02
46
0.0563
0.07
-0.02
-0.46
0.49
-0.02
47
0.0571
0.07
-0.02
-0.51
0.44
-0.02
48
0.0566
0.07
-0.02
-0.57
0.39
-0.02
49
0.0550
0.07
-0.02
-0.63
0.34
-0.02
50
0.0525
0.07
-0.02
-0.68
0.29
-0.02
51
0.0492
0.06
-0.02
-0.72
0.25
-0.02
52
0.0454
0.06
-0.02
-0.77
0.21
-0.02
53
0.0414
0.05
-0.02
-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 58 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.