■ 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 — 90 — is the max pain price.
Open interest by strike · Fri, Mar 19
■ calls (up)■ puts (down)BHP open contracts per strike for Fri, Mar 19.
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, Mar 19
■ calls (up)■ puts (down)Today's traded contracts per strike (delayed).
Implied volatility by strike · Fri, Mar 19
— call IV— put IVATM ≈ 37.8% · Quoted strikes only; illiquid wings with junk fits are dropped, not smoothed.
Gamma exposure by strike · Fri, Mar 19
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, Mar 19
Call Δ
Call Θ
Strike
Γ
Vega
Put Θ
Put Δ
0.81
-0.01
72.5
0.0099
0.18
-0.02
-0.21
0.79
-0.02
75
0.0109
0.20
-0.02
-0.24
0.75
-0.02
77.5
0.0119
0.22
-0.02
-0.27
0.72
-0.02
80
0.0129
0.23
-0.02
-0.30
0.69
-0.02
82.5
0.0137
0.24
-0.02
-0.34
0.65
-0.02
85
0.0144
0.25
-0.02
-0.38
0.61
-0.02
87.5
0.0150
0.26
-0.02
-0.41
0.57
-0.02
90
0.0154
0.27
-0.02
-0.45
0.53
-0.02
92.5
0.0157
0.27
-0.02
-0.49
0.50
-0.02
95
0.0158
0.27
-0.02
-0.52
0.46
-0.02
97.5
0.0158
0.27
-0.02
-0.56
0.42
-0.02
100
0.0156
0.27
-0.02
-0.59
0.36
-0.02
105
0.0149
0.26
-0.02
-0.66
0.30
-0.02
110
0.0138
0.24
-0.02
-0.72
0.25
-0.02
115
0.0126
0.22
-0.02
-0.78
Quoted contract greeks from the delayed feed (not modeled here); the highlighted row is nearest to spot. Showing 15 strikes around the money — all 32 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.