■ 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 — 85 — is the max pain price.
Open interest by strike · Fri, Jan 15
■ calls (up)■ puts (down)RIO 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 ≈ 31.1% · 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
0.84
-0.01
80
0.0107
0.15
-0.02
-0.16
0.82
-0.02
82.5
0.0123
0.17
-0.02
-0.19
0.78
-0.02
85
0.0139
0.18
-0.02
-0.22
0.74
-0.02
87.5
0.0156
0.20
-0.02
-0.26
0.70
-0.02
90
0.0172
0.21
-0.02
-0.30
0.66
-0.02
92.5
0.0186
0.23
-0.02
-0.35
0.61
-0.02
95
0.0197
0.24
-0.03
-0.40
0.56
-0.02
97.5
0.0205
0.24
-0.03
-0.45
0.51
-0.02
100
0.0209
0.25
-0.03
-0.51
0.41
-0.02
105
0.0205
0.24
-0.03
-0.61
0.32
-0.02
110
0.0189
0.22
-0.02
-0.71
0.24
-0.02
115
0.0165
0.20
-0.02
-0.80
0.18
-0.02
120
0.0139
0.17
-0.02
-0.87
0.14
-0.01
125
0.0114
0.14
-0.01
-0.92
0.10
-0.01
130
0.0091
0.12
-0.02
-0.97
Quoted contract greeks from the delayed feed (not modeled here); the highlighted row is nearest to spot. Showing 15 strikes around the money — all 42 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.