■ 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 — 11 — is the max pain price.
Open interest by strike · Fri, Dec 18
■ calls (up)■ puts (down)VIXM 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 ≈ 44.9% · 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
1.00
—
1
0.0003
0.00
0.00
-0.00
0.90
-0.00
11
0.0546
0.01
-0.00
-0.09
0.83
-0.00
12
0.0881
0.02
-0.00
-0.16
0.71
-0.00
13
0.1213
0.03
-0.00
-0.28
0.57
-0.00
14
0.1311
0.03
-0.00
-0.42
0.46
-0.01
15
0.1211
0.03
-0.01
-0.54
0.37
-0.01
16
0.1056
0.03
-0.01
-0.63
0.30
-0.01
17
0.0906
0.03
-0.01
-0.70
0.25
-0.01
18
0.0778
0.03
-0.01
-0.75
0.21
-0.01
19
0.0672
0.02
-0.00
-0.79
0.18
-0.01
20
0.0584
0.02
-0.00
-0.82
0.16
-0.00
21
0.0511
0.02
-0.00
-0.85
Quoted contract greeks from the delayed feed (not modeled here); the highlighted row is nearest to spot. Showing 12 strikes around the money — all 15 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.