■ 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 — 145 — is the max pain price.
Open interest by strike · Fri, Aug 28
■ calls (up)■ puts (down)VST 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 ≈ 44.5% · 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
0.76
-0.16
139
0.0277
0.08
-0.16
-0.24
0.73
-0.17
140
0.0295
0.08
-0.17
-0.27
0.70
-0.18
141
0.0311
0.09
-0.18
-0.30
0.67
-0.19
142
0.0326
0.09
-0.19
-0.34
0.63
-0.19
143
0.0338
0.10
-0.20
-0.37
0.60
-0.20
144
0.0347
0.10
-0.20
-0.40
0.56
-0.20
145
0.0353
0.10
-0.20
-0.44
0.53
-0.21
146
0.0356
0.10
-0.21
-0.47
0.49
-0.21
147
0.0356
0.10
-0.21
-0.51
0.46
-0.21
148
0.0353
0.10
-0.21
-0.55
0.42
-0.20
149
0.0348
0.10
-0.20
-0.58
0.39
-0.20
150
0.0339
0.10
-0.20
-0.61
0.31
-0.18
152.5
0.0310
0.09
-0.19
-0.69
0.25
-0.17
155
0.0273
0.08
-0.17
-0.76
0.19
-0.14
157.5
0.0232
0.07
-0.14
-0.81
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.