SourcePut open interest divided by call open interest
As ofCboe delayed snapshot Nov 10, 6:38 PM ET
How569 put contracts / 940 call contracts = 0.61 for the 2026-11-27 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, 6:38 PM ET
HowOver every strike with open interest for the 2026-11-27 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 5.7% of spot, more than the 5% we allow, so one strike decides it. Walls and gamma still print.
Max pain is not shown: without its single heaviest strike it moves 5.7% of spot, more than the 5% we allow, so one strike decides it. Walls and gamma still print.
Open interest by strike · Fri, Nov 27
■ calls (up)■ puts (down)BROS open contracts per strike for Fri, Nov 27.
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, Nov 27
■ calls (up)■ puts (down)Today's traded contracts per strike (delayed).
Implied volatility by strike · Fri, Nov 27
— call IV— put IVATM ≈ 52.1% · Quoted strikes only; illiquid wings with junk fits are dropped, not smoothed.
Gamma exposure by strike · Fri, Nov 27
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, Nov 27
Call Δ
Call Θ
Strike
Γ
Vega
Put Θ
Put Δ
0.91
-0.02
30
0.0351
0.01
-0.02
-0.09
0.88
-0.03
31
0.0479
0.02
-0.03
-0.13
0.82
-0.03
32
0.0630
0.02
-0.03
-0.18
0.75
-0.04
33
0.0793
0.02
-0.04
-0.25
0.67
-0.04
34
0.0940
0.03
-0.04
-0.34
0.56
-0.04
35
0.1039
0.03
-0.04
-0.44
0.51
-0.04
35.5
0.1061
0.03
-0.04
-0.49
0.46
-0.04
36
0.1062
0.03
-0.04
-0.55
0.36
-0.04
37
0.1004
0.03
-0.04
-0.65
0.31
-0.04
37.5
0.0950
0.03
-0.04
-0.69
0.27
-0.04
38
0.0885
0.03
-0.04
-0.74
0.23
-0.03
38.5
0.0813
0.02
-0.03
-0.78
0.20
-0.03
39
0.0738
0.02
-0.03
-0.81
0.14
-0.03
40
0.0591
0.02
-0.03
-0.87
Quoted contract greeks from the delayed feed (not modeled here); the highlighted row is nearest to spot. Showing 14 strikes around the money — all 28 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.