■ 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 — 730 — is the max pain price.
Open interest by strike · Fri, Aug 28
■ calls (up)■ puts (down)REGN open contracts per strike for Fri, Aug 28.
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 28
■ calls (up)■ puts (down)Today's traded contracts per strike (delayed).
Implied volatility by strike · Fri, Aug 28
— call IV— put IVATM ≈ 26.7% · Quoted strikes only; illiquid wings with junk fits are dropped, not smoothed.
Gamma exposure by strike · Fri, Aug 28
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 28
Call Δ
Call Θ
Strike
Γ
Vega
Put Θ
Put Δ
0.85
-0.45
765
0.0056
0.34
-0.46
-0.15
0.82
-0.48
770
0.0063
0.37
-0.49
-0.18
0.79
-0.52
775
0.0071
0.40
-0.53
-0.21
0.76
-0.55
780
0.0080
0.44
-0.56
-0.24
0.68
-0.61
790
0.0096
0.50
-0.62
-0.33
0.63
-0.64
795
0.0102
0.53
-0.65
-0.37
0.58
-0.66
800
0.0108
0.55
-0.67
-0.43
0.52
-0.66
805
0.0110
0.56
-0.67
-0.48
0.50
-0.66
807.5
0.0111
0.56
-0.67
-0.51
0.47
-0.66
810
0.0110
0.56
-0.67
-0.54
0.41
-0.65
815
0.0108
0.55
-0.66
-0.59
0.36
-0.63
820
0.0103
0.53
-0.64
-0.64
0.28
-0.57
830
0.0089
0.47
-0.58
-0.73
0.24
-0.54
835
0.0081
0.44
-0.55
-0.77
0.16
-0.44
850
0.0058
0.34
-0.45
-0.85
Quoted contract greeks from the delayed feed (not modeled here); the highlighted row is nearest to spot. Showing 15 strikes around the money — all 44 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.