■ 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 — 533 — is the max pain price.
Open interest by strike · Fri, Aug 21
■ calls (up)■ puts (down)DIA 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 ≈ 9.9% · 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
0.87
-0.17
528
0.0338
0.13
-0.18
-0.15
0.84
-0.19
529
0.0400
0.15
-0.20
-0.18
0.80
-0.22
530
0.0465
0.17
-0.23
-0.22
0.75
-0.25
531
0.0532
0.18
-0.26
-0.27
0.70
-0.27
532
0.0595
0.20
-0.28
-0.33
0.64
-0.29
533
0.0651
0.21
-0.29
-0.39
0.57
-0.30
534
0.0693
0.22
-0.30
-0.45
0.50
-0.30
535
0.0715
0.23
-0.30
-0.52
0.43
-0.29
536
0.0712
0.22
-0.29
-0.60
0.36
-0.27
537
0.0682
0.21
-0.27
-0.67
0.30
-0.25
538
0.0629
0.20
-0.24
-0.73
0.24
-0.22
539
0.0560
0.18
-0.21
-0.79
0.19
-0.19
540
0.0483
0.16
-0.17
-0.83
0.15
-0.16
541
0.0407
0.14
-0.14
-0.87
0.12
-0.13
542
0.0336
0.12
-0.12
-0.90
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.