■ 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 — 538 — is the max pain price.
Open interest by strike · Fri, Oct 2
■ calls (up)■ puts (down)DIA open contracts per strike for Fri, Oct 2.
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, Oct 2
■ calls (up)■ puts (down)Today's traded contracts per strike (delayed).
Implied volatility by strike · Fri, Oct 2
— call IV— put IVATM ≈ 12.8% · Quoted strikes only; illiquid wings with junk fits are dropped, not smoothed.
Gamma exposure by strike · Fri, Oct 2
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, Oct 2
Call Δ
Call Θ
Strike
Γ
Vega
Put Θ
Put Δ
0.82
-0.08
510
0.0091
0.51
-0.09
-0.19
0.79
-0.09
514
0.0104
0.56
-0.09
-0.22
0.78
-0.09
515
0.0107
0.57
-0.09
-0.23
0.73
-0.10
520
0.0125
0.63
-0.10
-0.28
0.65
-0.10
526
0.0145
0.70
-0.10
-0.36
0.58
-0.10
531
0.0158
0.74
-0.11
-0.43
0.56
-0.10
532
0.0160
0.74
-0.11
-0.45
0.52
-0.10
535
0.0165
0.75
-0.11
-0.50
0.50
-0.10
536
0.0166
0.75
-0.10
-0.52
0.47
-0.10
537.5
0.0167
0.75
-0.10
-0.54
0.47
-0.10
538
0.0167
0.75
-0.10
-0.55
0.43
-0.10
540
0.0167
0.74
-0.10
-0.58
0.35
-0.09
545
0.0160
0.70
-0.09
-0.67
0.27
-0.08
550
0.0145
0.64
-0.08
-0.75
0.04
-0.02
580
0.0033
0.17
-0.00
-0.99
Quoted contract greeks from the delayed feed (not modeled here); the highlighted row is nearest to spot. Showing 15 strikes around the money — all 21 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.