■ 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 — 62.5 — is the max pain price.
Open interest by strike · Fri, Aug 21
■ calls (up)■ puts (down)UL 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 ≈ 20.2% · 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
0.93
-0.02
58
0.0430
0.01
-0.02
-0.07
0.91
-0.02
58.5
0.0521
0.02
-0.02
-0.09
0.90
-0.03
59
0.0636
0.02
-0.03
-0.11
0.87
-0.03
59.5
0.0779
0.02
-0.03
-0.13
0.84
-0.03
60
0.0958
0.03
-0.03
-0.16
0.75
-0.04
61
0.1440
0.03
-0.04
-0.26
0.59
-0.04
62
0.1964
0.04
-0.04
-0.41
0.49
-0.04
62.5
0.2086
0.04
-0.04
-0.52
0.39
-0.04
63
0.2012
0.04
-0.04
-0.62
0.23
-0.03
64
0.1488
0.03
-0.03
-0.78
0.14
-0.03
65
0.0974
0.02
-0.03
-0.88
0.09
-0.02
66
0.0636
0.02
-0.02
-0.93
0.06
-0.02
67
0.0429
0.01
-0.02
-0.96
0.05
-0.01
67.5
0.0357
0.01
-0.01
-0.97
0.04
-0.01
68
0.0300
0.01
-0.01
-0.97
Quoted contract greeks from the delayed feed (not modeled here); the highlighted row is nearest to spot. Showing 15 strikes around the money — all 39 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.