■ 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 — 280 — is the max pain price.
Open interest by strike · Fri, Oct 23
■ calls (up)■ puts (down)TXN open contracts per strike for Fri, Oct 23.
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 23
■ calls (up)■ puts (down)Today's traded contracts per strike (delayed).
Implied volatility by strike · Fri, Oct 23
— call IV— put IVATM ≈ 71.1% · Quoted strikes only; illiquid wings with junk fits are dropped, not smoothed.
Gamma exposure by strike · Fri, Oct 23
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 23
Call Δ
Call Θ
Strike
Γ
Vega
Put Θ
Put Δ
0.96
-0.17
260
0.0070
0.01
-0.17
-0.04
0.94
-0.25
262.5
0.0098
0.02
-0.26
-0.06
0.92
-0.39
265
0.0136
0.02
-0.39
-0.08
0.88
-0.60
267.5
0.0184
0.03
-0.61
-0.12
0.83
-0.93
270
0.0240
0.04
-0.93
-0.17
0.77
-1.41
272.5
0.0297
0.04
-1.41
-0.23
0.69
-2.08
275
0.0348
0.05
-2.08
-0.31
0.59
-2.95
277.5
0.0383
0.06
-2.95
-0.41
0.50
-3.38
280
0.0395
0.06
-3.38
-0.50
0.40
-2.80
282.5
0.0382
0.06
-2.80
-0.60
0.31
-1.98
285
0.0348
0.05
-1.98
-0.69
0.23
-1.35
287.5
0.0299
0.04
-1.36
-0.77
0.17
-0.90
290
0.0245
0.04
-0.91
-0.83
0.12
-0.57
292.5
0.0191
0.03
-0.59
-0.89
0.08
-0.35
295
0.0141
0.02
-0.38
-0.93
Quoted contract greeks from the delayed feed (not modeled here); the highlighted row is nearest to spot. Showing 15 strikes around the money — all 55 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.