■ 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 — 534 — is the max pain price.
Open interest by strike · Fri, Aug 28
■ calls (up)■ puts (down)DIA 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 ≈ 11.5% · 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
0.72
-0.19
527
0.0304
0.30
-0.20
-0.29
0.69
-0.20
528
0.0323
0.32
-0.20
-0.32
0.66
-0.20
529
0.0340
0.33
-0.21
-0.35
0.62
-0.20
530
0.0356
0.34
-0.21
-0.39
0.59
-0.21
531
0.0370
0.34
-0.21
-0.42
0.55
-0.21
532
0.0381
0.35
-0.21
-0.46
0.53
-0.21
532.5
0.0385
0.35
-0.21
-0.48
0.51
-0.21
533
0.0389
0.35
-0.21
-0.50
0.47
-0.20
534
0.0393
0.35
-0.21
-0.54
0.43
-0.20
535
0.0393
0.35
-0.20
-0.58
0.39
-0.19
536
0.0389
0.34
-0.20
-0.62
0.35
-0.18
537
0.0381
0.33
-0.19
-0.66
0.32
-0.17
538
0.0368
0.32
-0.18
-0.70
0.28
-0.16
539
0.0350
0.30
-0.16
-0.74
0.24
-0.15
540
0.0329
0.28
-0.15
-0.78
Quoted contract greeks from the delayed feed (not modeled here); the highlighted row is nearest to spot. Showing 15 strikes around the money — all 60 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.