■ 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 — 400 — is the max pain price.
Open interest by strike · Fri, Oct 16
■ calls (up)■ puts (down)UNH 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 ≈ 32.0% · 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
0.94
-0.06
330
0.0024
0.17
-0.07
-0.07
0.92
-0.08
340
0.0033
0.23
-0.09
-0.09
0.88
-0.10
350
0.0043
0.30
-0.10
-0.13
0.83
-0.12
360
0.0053
0.38
-0.13
-0.18
0.77
-0.14
370
0.0064
0.46
-0.15
-0.24
0.70
-0.16
380
0.0073
0.52
-0.17
-0.31
0.62
-0.17
390
0.0080
0.57
-0.18
-0.39
0.54
-0.18
400
0.0084
0.59
-0.18
-0.47
0.45
-0.18
410
0.0085
0.59
-0.18
-0.56
0.37
-0.17
420
0.0081
0.56
-0.17
-0.64
0.30
-0.16
430
0.0074
0.52
-0.16
-0.72
0.23
-0.14
440
0.0066
0.46
-0.14
-0.78
0.18
-0.12
450
0.0056
0.40
-0.11
-0.84
0.14
-0.10
460
0.0047
0.33
-0.09
-0.88
0.10
-0.08
470
0.0038
0.27
-0.07
-0.92
Quoted contract greeks from the delayed feed (not modeled here); the highlighted row is nearest to spot. Showing 15 strikes around the money — all 36 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.