■ 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 — 370 — is the max pain price.
Open interest by strike · Fri, Oct 16
■ calls (up)■ puts (down)V 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 ≈ 21.7% · 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
0.85
-0.05
335
0.0058
0.38
-0.06
-0.15
0.82
-0.06
340
0.0067
0.42
-0.07
-0.18
0.79
-0.07
345
0.0076
0.47
-0.08
-0.21
0.75
-0.07
350
0.0085
0.52
-0.08
-0.26
0.70
-0.08
355
0.0094
0.56
-0.09
-0.30
0.66
-0.09
360
0.0101
0.60
-0.09
-0.35
0.60
-0.09
365
0.0107
0.63
-0.10
-0.41
0.55
-0.09
370
0.0112
0.65
-0.10
-0.46
0.49
-0.09
375
0.0114
0.65
-0.10
-0.52
0.44
-0.09
380
0.0114
0.64
-0.10
-0.58
0.38
-0.09
385
0.0111
0.62
-0.09
-0.64
0.33
-0.08
390
0.0106
0.59
-0.09
-0.70
0.28
-0.08
395
0.0099
0.55
-0.08
-0.75
0.23
-0.07
400
0.0090
0.51
-0.07
-0.80
0.20
-0.06
405
0.0081
0.46
-0.06
-0.84
Quoted contract greeks from the delayed feed (not modeled here); the highlighted row is nearest to spot. Showing 15 strikes around the money — all 46 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.