■ 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 — 45 — is the max pain price.
Open interest by strike · Fri, Aug 21
■ calls (up)■ puts (down)PAAS 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 ≈ 50.7% · 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
0.90
-0.06
44.5
0.0565
0.01
-0.06
-0.10
0.88
-0.07
45
0.0696
0.01
-0.07
-0.12
0.84
-0.08
45.5
0.0848
0.01
-0.08
-0.16
0.80
-0.10
46
0.1014
0.01
-0.10
-0.20
0.75
-0.11
46.5
0.1184
0.02
-0.11
-0.25
0.69
-0.12
47
0.1340
0.02
-0.12
-0.32
0.62
-0.13
47.5
0.1462
0.02
-0.13
-0.39
0.54
-0.14
48
0.1529
0.02
-0.14
-0.46
0.47
-0.14
48.5
0.1531
0.02
-0.14
-0.54
0.39
-0.13
49
0.1469
0.02
-0.13
-0.61
0.32
-0.12
49.5
0.1358
0.02
-0.12
-0.68
0.27
-0.11
50
0.1217
0.02
-0.11
-0.74
0.17
-0.09
51
0.0914
0.01
-0.09
-0.83
0.11
-0.07
52
0.0652
0.01
-0.07
-0.89
0.07
-0.05
53
0.0455
0.01
-0.05
-0.93
Quoted contract greeks from the delayed feed (not modeled here); the highlighted row is nearest to spot. Showing 15 strikes around the money — all 56 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.