SourcePut open interest divided by call open interest
As ofCboe delayed snapshot Nov 2, 6:17 PM ET
How871 put contracts / 1,207 call contracts = 0.72 for the 2027-04-16 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 2, 6:17 PM ET
HowOver every strike with open interest for the 2027-04-16 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 9.2% 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, Nov 6 · CPI release Tue, Nov 10 · 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 9.2% of spot, more than the 5% we allow, so one strike decides it. Walls and gamma still print.
Open interest by strike · Fri, Apr 16
■ calls (up)■ puts (down)DBC open contracts per strike for Fri, Apr 16.
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, Apr 16
■ calls (up)■ puts (down)Today's traded contracts per strike (delayed).
Implied volatility by strike · Fri, Apr 16
— call IV— put IVATM ≈ 22.3% · Quoted strikes only; illiquid wings with junk fits are dropped, not smoothed.
Gamma exposure by strike · Fri, Apr 16
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, Apr 16
Call Δ
Call Θ
Strike
Γ
Vega
Put Θ
Put Δ
0.88
-0.01
25
0.0295
0.04
-0.01
-0.15
0.86
-0.01
26
0.0357
0.04
-0.01
-0.17
0.84
-0.01
27
0.0438
0.05
-0.01
-0.20
0.81
-0.01
28
0.0535
0.06
-0.01
-0.23
0.76
-0.01
29
0.0656
0.06
-0.01
-0.27
0.70
-0.01
30
0.0780
0.07
-0.01
-0.33
0.62
-0.01
31
0.0873
0.08
-0.01
-0.40
0.54
-0.01
32
0.0888
0.08
-0.01
-0.48
0.45
-0.01
33
0.0828
0.08
-0.01
-0.56
0.38
-0.01
34
0.0743
0.08
-0.01
-0.63
0.33
-0.01
35
0.0658
0.08
-0.01
-0.68
0.29
-0.01
36
0.0582
0.07
-0.01
-0.73
0.22
-0.01
38
0.0462
0.06
-0.01
-0.79
0.20
-0.01
39
0.0414
0.06
-0.01
-0.81
0.18
-0.01
40
0.0374
0.06
-0.01
-0.83
Quoted contract greeks from the delayed feed (not modeled here); the highlighted row is nearest to spot. Showing 15 strikes around the money — all 22 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.