■ 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 — 23 — is the max pain price.
Open interest by strike · Fri, Aug 28
■ calls (up)■ puts (down)NLY open contracts per strike for Fri, Aug 28.
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 28
■ calls (up)■ puts (down)Today's traded contracts per strike (delayed).
Implied volatility by strike · Fri, Aug 28
— call IV— put IVATM ≈ 18.0% · Quoted strikes only; illiquid wings with junk fits are dropped, not smoothed.
Gamma exposure by strike · Fri, Aug 28
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 28
Call Δ
Call Θ
Strike
Γ
Vega
Put Θ
Put Δ
0.98
-0.00
20
0.0280
0.00
-0.00
-0.02
0.97
-0.00
20.5
0.0399
0.00
-0.01
-0.03
0.96
-0.01
21
0.0588
0.00
-0.01
-0.04
0.94
-0.01
21.5
0.0905
0.01
-0.01
-0.06
0.91
-0.01
22
0.1470
0.01
-0.01
-0.09
0.85
-0.01
22.5
0.2547
0.01
-0.01
-0.15
0.72
-0.01
23
0.4597
0.01
-0.01
-0.28
0.45
-0.01
23.5
0.6466
0.02
-0.01
-0.56
0.20
-0.01
24
0.4166
0.01
-0.01
-0.81
0.09
-0.01
24.5
0.2104
0.01
-0.01
-0.92
0.05
-0.00
25
0.1142
0.01
-0.00
-0.96
0.03
-0.00
25.5
0.0676
0.00
-0.00
-0.98
0.02
-0.00
26
0.0429
0.00
-0.00
-0.99
0.01
-0.00
26.5
0.0287
0.00
-0.00
-0.99
Quoted contract greeks from the delayed feed (not modeled here); the highlighted row is nearest to spot. Showing 14 strikes around the money — all 18 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.