■ 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 — 600 — is the max pain price.
Open interest by strike · Fri, Oct 16
■ calls (up)■ puts (down)FN 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 ≈ 75.9% · 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
0.73
-0.49
500
0.0018
0.79
-0.49
-0.28
0.71
-0.50
510
0.0019
0.82
-0.51
-0.30
0.69
-0.52
520
0.0019
0.85
-0.52
-0.32
0.67
-0.53
530
0.0020
0.87
-0.54
-0.34
0.64
-0.54
540
0.0020
0.89
-0.55
-0.36
0.62
-0.55
550
0.0021
0.91
-0.56
-0.38
0.60
-0.56
560
0.0021
0.92
-0.57
-0.41
0.58
-0.57
570
0.0022
0.93
-0.57
-0.43
0.56
-0.57
580
0.0022
0.94
-0.58
-0.45
0.54
-0.57
590
0.0022
0.94
-0.58
-0.47
0.52
-0.58
600
0.0022
0.95
-0.59
-0.49
0.49
-0.58
610
0.0022
0.95
-0.59
-0.51
0.47
-0.58
620
0.0022
0.95
-0.59
-0.53
0.46
-0.57
630
0.0022
0.94
-0.58
-0.55
0.43
-0.57
640
0.0022
0.94
-0.58
-0.57
Quoted contract greeks from the delayed feed (not modeled here); the highlighted row is nearest to spot. Showing 15 strikes around the money — all 52 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.