■ 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 — 80 — is the max pain price.
Open interest by strike · Fri, Jan 15
■ calls (up)■ puts (down)BCO open contracts per strike for Fri, Jan 15.
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, Jan 15
■ calls (up)■ puts (down)Today's traded contracts per strike (delayed).
Implied volatility by strike · Fri, Jan 15
— call IV— put IVATM ≈ 36.6% · Quoted strikes only; illiquid wings with junk fits are dropped, not smoothed.
Gamma exposure by strike · Fri, Jan 15
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, Jan 15
Call Δ
Call Θ
Strike
Γ
Vega
Put Θ
Put Δ
0.95
-0.01
75
0.0030
0.08
-0.01
-0.05
0.93
-0.01
80
0.0042
0.10
-0.01
-0.07
0.82
-0.02
95
0.0089
0.20
-0.03
-0.18
0.77
-0.03
100
0.0106
0.23
-0.03
-0.24
0.71
-0.03
105
0.0122
0.26
-0.03
-0.30
0.64
-0.03
110
0.0135
0.28
-0.03
-0.37
0.57
-0.03
115
0.0144
0.29
-0.03
-0.44
0.50
-0.03
120
0.0148
0.30
-0.03
-0.52
0.43
-0.03
125
0.0146
0.29
-0.03
-0.59
0.36
-0.03
130
0.0140
0.28
-0.03
-0.66
0.25
-0.03
140
0.0119
0.24
-0.03
-0.78
0.21
-0.02
145
0.0107
0.21
-0.02
-0.83
0.14
-0.02
155
0.0081
0.17
-0.02
-0.92
0.09
-0.01
165
0.0060
0.12
-0.01
-0.98
Quoted contract greeks from the delayed feed (not modeled here); the highlighted row is nearest to spot. Showing 14 strikes around the money — all 15 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.