■ 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 — 275 — is the max pain price.
Open interest by strike · Fri, Aug 21
■ calls (up)■ puts (down)CEG open contracts per strike for Fri, Aug 21.
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, Aug 21
■ calls (up)■ puts (down)Today's traded contracts per strike (delayed).
Implied volatility by strike · Fri, Aug 21
— call IV— put IVATM ≈ 39.3% · Quoted strikes only; illiquid wings with junk fits are dropped, not smoothed.
Gamma exposure by strike · Fri, Aug 21
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, Aug 21
Call Δ
Call Θ
Strike
Γ
Vega
Put Θ
Put Δ
0.87
-0.24
265
0.0131
0.08
-0.24
-0.13
0.84
-0.28
267.5
0.0155
0.10
-0.28
-0.16
0.80
-0.32
270
0.0180
0.11
-0.32
-0.20
0.75
-0.36
272.5
0.0205
0.12
-0.36
-0.25
0.70
-0.39
275
0.0228
0.14
-0.40
-0.31
0.64
-0.42
277.5
0.0246
0.15
-0.42
-0.37
0.58
-0.44
280
0.0259
0.15
-0.44
-0.43
0.45
-0.44
285
0.0261
0.15
-0.45
-0.56
0.32
-0.40
290
0.0235
0.14
-0.41
-0.68
0.27
-0.37
292.5
0.0215
0.13
-0.37
-0.74
0.23
-0.34
295
0.0192
0.12
-0.34
-0.78
0.18
-0.30
297.5
0.0169
0.10
-0.30
-0.82
0.15
-0.26
300
0.0146
0.09
-0.26
-0.86
0.10
-0.20
305
0.0106
0.07
-0.20
-0.91
0.07
-0.15
310
0.0075
0.05
-0.14
-0.94
Quoted contract greeks from the delayed feed (not modeled here); the highlighted row is nearest to spot. Showing 15 strikes around the money — all 45 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.