■ 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 — 105 — is the max pain price.
Open interest by strike · Fri, Aug 21
■ calls (up)■ puts (down)TEAM 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 ≈ 62.5% · 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
0.99
-0.04
130
0.0023
0.01
-0.04
-0.01
0.98
-0.06
135
0.0038
0.01
-0.06
-0.02
0.96
-0.11
140
0.0078
0.01
-0.11
-0.04
0.90
-0.23
145
0.0156
0.03
-0.23
-0.10
0.84
-0.33
148
0.0217
0.04
-0.33
-0.16
0.79
-0.40
150
0.0259
0.05
-0.40
-0.21
0.64
-0.54
155
0.0344
0.06
-0.54
-0.36
0.55
-0.57
157.5
0.0365
0.07
-0.57
-0.45
0.46
-0.57
160
0.0366
0.07
-0.57
-0.55
0.29
-0.48
165
0.0314
0.06
-0.48
-0.71
0.22
-0.41
167.5
0.0271
0.05
-0.41
-0.78
0.16
-0.33
170
0.0225
0.04
-0.33
-0.84
0.12
-0.26
172.5
0.0179
0.03
-0.26
-0.89
0.09
-0.19
175
0.0139
0.03
-0.19
-0.92
0.04
-0.11
180
0.0078
0.01
-0.10
-0.96
Quoted contract greeks from the delayed feed (not modeled here); the highlighted row is nearest to spot. Showing 15 strikes around the money — all 34 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.