■ 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 — 665 — is the max pain price.
Open interest by strike · Fri, Aug 21
■ calls (up)■ puts (down)REGN 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 ≈ 27.4% · 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
0.95
-0.32
760
0.0036
0.09
-0.33
-0.05
0.91
-0.49
770
0.0058
0.14
-0.50
-0.09
0.89
-0.60
775
0.0073
0.17
-0.61
-0.12
0.85
-0.72
780
0.0091
0.20
-0.73
-0.15
0.75
-0.99
790
0.0131
0.27
-1.01
-0.25
0.68
-1.11
795
0.0150
0.30
-1.13
-0.32
0.60
-1.20
800
0.0164
0.33
-1.22
-0.40
0.52
-1.24
805
0.0171
0.34
-1.26
-0.49
0.44
-1.22
810
0.0168
0.33
-1.24
-0.57
0.36
-1.15
815
0.0158
0.32
-1.17
-0.65
0.28
-1.04
820
0.0142
0.29
-1.06
-0.73
0.22
-0.92
825
0.0123
0.25
-0.93
-0.79
0.17
-0.79
830
0.0103
0.22
-0.80
-0.84
0.04
-0.25
860
0.0029
0.07
-0.25
-0.97
0.02
-0.12
880
0.0012
0.04
-0.16
-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 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.