■ 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 — 270 — is the max pain price.
Open interest by strike · Fri, Aug 28
■ calls (up)■ puts (down)CEG open contracts per strike for Fri, Aug 28.
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 28
■ calls (up)■ puts (down)Today's traded contracts per strike (delayed).
Implied volatility by strike · Fri, Aug 28
— call IV— put IVATM ≈ 40.4% · Quoted strikes only; illiquid wings with junk fits are dropped, not smoothed.
Gamma exposure by strike · Fri, Aug 28
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 28
Call Δ
Call Θ
Strike
Γ
Vega
Put Θ
Put Δ
0.80
-0.23
265
0.0123
0.15
-0.23
-0.20
0.77
-0.24
267.5
0.0136
0.17
-0.25
-0.23
0.73
-0.26
270
0.0148
0.18
-0.26
-0.27
0.69
-0.28
272.5
0.0159
0.19
-0.28
-0.31
0.65
-0.29
275
0.0169
0.20
-0.29
-0.35
0.61
-0.30
277.5
0.0176
0.21
-0.30
-0.39
0.56
-0.31
280
0.0182
0.22
-0.31
-0.44
0.52
-0.31
282.5
0.0184
0.22
-0.32
-0.48
0.47
-0.31
285
0.0184
0.22
-0.32
-0.53
0.43
-0.31
287.5
0.0181
0.22
-0.31
-0.58
0.39
-0.30
290
0.0175
0.21
-0.30
-0.62
0.35
-0.29
292.5
0.0168
0.20
-0.30
-0.66
0.31
-0.28
295
0.0159
0.20
-0.28
-0.70
0.24
-0.25
300
0.0138
0.17
-0.26
-0.77
0.19
-0.22
305
0.0117
0.15
-0.23
-0.82
Quoted contract greeks from the delayed feed (not modeled here); the highlighted row is nearest to spot. Showing 15 strikes around the money — all 50 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.