■ 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 — 22.5 — is the max pain price.
Open interest by strike · Fri, Dec 17
■ calls (up)■ puts (down)IDYA open contracts per strike for Fri, Dec 17.
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 17
■ calls (up)■ puts (down)Today's traded contracts per strike (delayed).
Implied volatility by strike · Fri, Dec 17
— call IV— put IVATM ≈ 57.4% · Quoted strikes only; illiquid wings with junk fits are dropped, not smoothed.
Gamma exposure by strike · Fri, Dec 17
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 17
Call Δ
Call Θ
Strike
Γ
Vega
Put Θ
Put Δ
0.94
0.00
15
0.0035
0.05
-0.00
-0.05
0.90
-0.00
20
0.0060
0.07
-0.01
-0.10
0.87
-0.00
22.5
0.0074
0.09
-0.01
-0.13
0.81
-0.01
27.5
0.0102
0.12
-0.01
-0.19
0.77
-0.01
30
0.0115
0.13
-0.01
-0.23
0.73
-0.01
32.5
0.0127
0.14
-0.01
-0.27
0.70
-0.01
35
0.0138
0.15
-0.01
-0.31
0.66
-0.01
37.5
0.0147
0.16
-0.01
-0.35
0.62
-0.01
40
0.0154
0.17
-0.01
-0.39
0.58
-0.01
42.5
0.0160
0.17
-0.01
-0.43
0.55
-0.01
45
0.0164
0.17
-0.01
-0.47
0.48
-0.01
50
0.0167
0.17
-0.01
-0.55
0.42
-0.01
55
0.0165
0.17
-0.01
-0.62
Quoted contract greeks from the delayed feed (not modeled here); the highlighted row is nearest to spot. 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.