SourcePut open interest divided by call open interest
As ofCboe delayed snapshot Nov 10, 6:24 PM ET
How12,918 put contracts / 22,678 call contracts = 0.57 for the 2027-01-15 expiration. Open interest is published once a day, before the open, so it describes the previous session.
SourceNet gamma exposure from Cboe greeks and open interest
As ofCboe delayed snapshot Nov 10, 6:24 PM ET
HowOver every strike with open interest for the 2027-01-15 expiration: (call gamma × call OI minus put gamma × put OI) × 100 × spot² × 1%, summed. Calls count as positive and puts as negative, a convention about who holds the other side, not a measurement.
Max pain is not shown: without its single heaviest strike it moves 20.6% of spot, more than the 5% we allow, so one strike decides it. Walls and gamma still print.
Event risk before this expiration:Jobs report Fri, Dec 4 · FOMC decision Wed, Dec 9 · CPI release Thu, Dec 10 — macro releases historically overwhelm pinning effects; max pain reads weakest in event weeks.
Max pain is not shown: without its single heaviest strike it moves 20.6% of spot, more than the 5% we allow, so one strike decides it. Walls and gamma still print.
Open interest by strike · Fri, Jan 15
■ calls (up)■ puts (down)CORT 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 ≈ 91.1% · 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
0.82
-0.06
55
0.0087
0.08
-0.06
-0.18
0.79
-0.06
57.5
0.0096
0.09
-0.06
-0.21
0.76
-0.07
60
0.0105
0.10
-0.07
-0.24
0.73
-0.07
62.5
0.0114
0.10
-0.07
-0.27
0.69
-0.07
65
0.0122
0.11
-0.07
-0.30
0.66
-0.08
67.5
0.0129
0.11
-0.08
-0.34
0.62
-0.08
70
0.0135
0.12
-0.08
-0.37
0.59
-0.08
72.5
0.0140
0.12
-0.08
-0.41
0.55
-0.08
75
0.0143
0.12
-0.08
-0.45
0.52
-0.08
77.5
0.0146
0.12
-0.08
-0.48
0.48
-0.08
80
0.0147
0.12
-0.08
-0.52
0.45
-0.08
82.5
0.0146
0.12
-0.08
-0.55
0.41
-0.08
85
0.0145
0.12
-0.08
-0.58
0.38
-0.08
87.5
0.0143
0.12
-0.07
-0.62
0.35
-0.07
90
0.0140
0.12
-0.07
-0.65
Quoted contract greeks from the delayed feed (not modeled here); the highlighted row is nearest to spot. Showing 15 strikes around the money — all 50 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.
Max pain, walls and gamma print only when an expiration holds at least 100 open contracts across 5 strikes, and max pain also needs to stay within 5% of spot when its single heaviest strike is removed. Below that the expiration reads as thin rather than printing a level one trade could move.
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.