■ 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 — 530 — is the max pain price.
Open interest by strike · Fri, Aug 21
■ calls (up)■ puts (down)FN 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 ≈ 117.2% · 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
0.82
-1.72
500
0.0029
0.21
-1.73
-0.18
0.79
-1.91
510
0.0032
0.23
-1.92
-0.21
0.75
-2.09
520
0.0035
0.25
-2.10
-0.25
0.71
-2.26
530
0.0038
0.27
-2.27
-0.29
0.67
-2.40
540
0.0040
0.29
-2.41
-0.33
0.63
-2.51
550
0.0042
0.30
-2.52
-0.38
0.58
-2.59
560
0.0043
0.31
-2.60
-0.42
0.54
-2.63
570
0.0044
0.32
-2.65
-0.46
0.50
-2.65
580
0.0044
0.32
-2.66
-0.51
0.45
-2.63
590
0.0044
0.32
-2.64
-0.55
0.41
-2.58
600
0.0043
0.31
-2.59
-0.59
0.37
-2.50
610
0.0042
0.30
-2.52
-0.63
0.34
-2.41
620
0.0040
0.29
-2.42
-0.67
0.30
-2.29
630
0.0038
0.28
-2.30
-0.70
0.27
-2.16
640
0.0036
0.26
-2.17
-0.74
Quoted contract greeks from the delayed feed (not modeled here); the highlighted row is nearest to spot. Showing 15 strikes around the money — all 53 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.