SourcePut open interest divided by call open interest
As ofCboe delayed snapshot Nov 10, 6:23 PM ET
How6,889 put contracts / 12,092 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, 6:23 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 13.4% 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 13.4% 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)CSTM 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 ≈ 44.3% · 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
0.94
-0.01
15
0.0180
0.01
-0.01
-0.06
0.92
-0.01
16
0.0238
0.01
-0.01
-0.08
0.90
-0.01
17
0.0316
0.02
-0.01
-0.10
0.87
-0.01
18
0.0416
0.02
-0.01
-0.13
0.82
-0.01
19
0.0542
0.03
-0.01
-0.18
0.76
-0.01
20
0.0685
0.03
-0.01
-0.24
0.69
-0.01
21
0.0823
0.03
-0.01
-0.32
0.60
-0.01
22
0.0923
0.04
-0.01
-0.41
0.50
-0.01
23
0.0956
0.04
-0.01
-0.50
0.41
-0.01
24
0.0924
0.04
-0.01
-0.59
0.34
-0.01
25
0.0847
0.04
-0.01
-0.67
0.27
-0.01
26
0.0750
0.03
-0.01
-0.74
0.22
-0.01
27
0.0652
0.03
-0.01
-0.79
0.18
-0.01
28
0.0560
0.03
-0.01
-0.83
0.15
-0.01
29
0.0479
0.02
-0.01
-0.87
Quoted contract greeks from the delayed feed (not modeled here); the highlighted row is nearest to spot. Showing 15 strikes around the money — all 35 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.