■ 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 — 510 — is the max pain price.
Open interest by strike · Fri, Sep 18
■ calls (up)■ puts (down)DIA open contracts per strike for Fri, Sep 18.
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, Sep 18
■ calls (up)■ puts (down)Today's traded contracts per strike (delayed).
Implied volatility by strike · Fri, Sep 18
— call IV— put IVATM ≈ 12.2% · Quoted strikes only; illiquid wings with junk fits are dropped, not smoothed.
Gamma exposure by strike · Fri, Sep 18
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, Sep 18
Call Δ
Call Θ
Strike
Γ
Vega
Put Θ
Put Δ
0.92
-0.06
500
0.0057
0.26
-0.07
-0.09
0.89
-0.07
505
0.0072
0.29
-0.08
-0.12
0.86
-0.08
510
0.0091
0.35
-0.09
-0.15
0.82
-0.09
515
0.0114
0.42
-0.10
-0.19
0.77
-0.10
520
0.0140
0.48
-0.11
-0.25
0.70
-0.11
525
0.0168
0.55
-0.12
-0.32
0.61
-0.12
530
0.0193
0.60
-0.12
-0.41
0.56
-0.12
533
0.0204
0.62
-0.12
-0.47
0.52
-0.12
535
0.0209
0.63
-0.12
-0.51
0.45
-0.12
538
0.0212
0.62
-0.12
-0.57
0.43
-0.12
539
0.0211
0.62
-0.11
-0.59
0.41
-0.11
540
0.0210
0.61
-0.11
-0.61
0.31
-0.10
545
0.0194
0.55
-0.10
-0.71
0.22
-0.08
550
0.0164
0.48
-0.09
-0.81
0.14
-0.06
555
0.0128
0.37
-0.07
-0.89
Quoted contract greeks from the delayed feed (not modeled here); the highlighted row is nearest to spot. Showing 15 strikes around the money — all 51 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.