■ 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 — 15 — is the max pain price.
Open interest by strike · Fri, Oct 16
■ calls (up)■ puts (down)XNDU open contracts per strike for Fri, Oct 16.
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, Oct 16
■ calls (up)■ puts (down)Today's traded contracts per strike (delayed).
Implied volatility by strike · Fri, Oct 16
— call IV— put IVATM ≈ 117.0% · Quoted strikes only; illiquid wings with junk fits are dropped, not smoothed.
Gamma exposure by strike · Fri, Oct 16
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, Oct 16
Call Δ
Call Θ
Strike
Γ
Vega
Put Θ
Put Δ
0.98
-0.00
2.5
0.0057
0.00
-0.00
-0.02
0.93
-0.01
5
0.0173
0.01
-0.01
-0.07
0.83
-0.01
7.5
0.0382
0.01
-0.01
-0.16
0.68
-0.01
10
0.0593
0.02
-0.01
-0.31
0.52
-0.02
12.5
0.0667
0.02
-0.01
-0.47
0.39
-0.01
15
0.0629
0.02
-0.01
-0.60
0.30
-0.01
17.5
0.0550
0.02
-0.01
-0.69
0.23
-0.01
20
0.0470
0.01
-0.01
-0.76
0.18
-0.01
22.5
0.0399
0.01
-0.01
-0.81
0.15
-0.01
25
0.0339
0.01
-0.01
-0.84
0.10
-0.01
30
0.0248
0.01
-0.01
-0.90
0.07
-0.01
35
0.0186
0.01
-0.01
-0.93
Quoted contract greeks from the delayed feed (not modeled here); the highlighted row is nearest to spot. Showing 12 strikes around the money — all 16 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.