■ 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 — 15 — is the max pain price.
Open interest by strike · Fri, Aug 21
■ calls (up)■ puts (down)ETHA 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 ≈ 34.5% · 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
-0.00
10.5
0.0177
0.00
-0.00
-0.01
0.98
-0.01
11
0.0257
0.00
-0.01
-0.02
0.97
-0.01
11.5
0.0386
0.00
-0.01
-0.03
0.96
-0.01
12
0.0607
0.00
-0.01
-0.04
0.94
-0.01
12.5
0.1008
0.00
-0.01
-0.06
0.90
-0.01
13
0.1793
0.00
-0.01
-0.10
0.82
-0.01
13.5
0.3390
0.01
-0.01
-0.18
0.61
-0.02
14
0.5859
0.01
-0.02
-0.39
0.32
-0.02
14.5
0.5446
0.01
-0.02
-0.68
0.15
-0.01
15
0.3088
0.01
-0.01
-0.85
0.08
-0.01
15.5
0.1698
0.00
-0.01
-0.92
0.05
-0.01
16
0.0993
0.00
-0.01
-0.95
0.03
-0.01
16.5
0.0617
0.00
-0.01
-0.97
0.02
-0.00
17
0.0403
0.00
-0.00
-0.98
0.01
-0.00
17.5
0.0274
0.00
-0.00
-0.98
Quoted contract greeks from the delayed feed (not modeled here); the highlighted row is nearest to spot. Showing 15 strikes around the money — all 33 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.