■ 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 — 22.5 — is the max pain price.
Open interest by strike · Fri, Aug 21
■ calls (up)■ puts (down)ZETA 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 ≈ 60.3% · 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
0.92
-0.02
25
0.0528
0.01
-0.02
-0.08
0.89
-0.03
25.5
0.0678
0.01
-0.03
-0.11
0.85
-0.04
26
0.0846
0.01
-0.04
-0.15
0.80
-0.04
26.5
0.1020
0.01
-0.04
-0.20
0.74
-0.05
27
0.1184
0.01
-0.05
-0.26
0.68
-0.06
27.5
0.1322
0.02
-0.06
-0.32
0.61
-0.06
28
0.1418
0.02
-0.06
-0.39
0.53
-0.06
28.5
0.1464
0.02
-0.06
-0.47
0.46
-0.06
29
0.1456
0.02
-0.06
-0.54
0.39
-0.06
29.5
0.1401
0.02
-0.06
-0.61
0.33
-0.06
30
0.1308
0.02
-0.06
-0.67
0.27
-0.05
30.5
0.1188
0.01
-0.05
-0.73
0.22
-0.05
31
0.1055
0.01
-0.05
-0.78
0.18
-0.04
31.5
0.0918
0.01
-0.04
-0.82
0.14
-0.04
32
0.0786
0.01
-0.04
-0.86
Quoted contract greeks from the delayed feed (not modeled here); the highlighted row is nearest to spot. Showing 15 strikes around the money — all 46 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.