SourcePut open interest divided by call open interest
As ofCboe delayed snapshot Nov 9, 9:19 PM ET
How182 put contracts / 461 call contracts = 0.39 for the 2026-11-20 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 9, 9:19 PM ET
HowOver every strike with open interest for the 2026-11-20 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 7.5% 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 7.5% of spot, more than the 5% we allow, so one strike decides it. Walls and gamma still print.
Open interest by strike · Fri, Nov 20
■ calls (up)■ puts (down)AZZ open contracts per strike for Fri, Nov 20.
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 20
Implied volatility by strike · Fri, Nov 20
— call IV— put IVATM ≈ 40.9% · Quoted strikes only; illiquid wings with junk fits are dropped, not smoothed.
Gamma exposure by strike · Fri, Nov 20
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 20
Call Δ
Call Θ
Strike
Γ
Vega
Put Θ
Put Δ
0.97
-0.09
95
0.0031
0.02
-0.09
-0.04
0.94
-0.11
105
0.0058
0.03
-0.10
-0.06
0.92
-0.12
110
0.0081
0.03
-0.12
-0.08
0.90
-0.13
115
0.0117
0.04
-0.13
-0.11
0.85
-0.15
120
0.0174
0.05
-0.15
-0.15
0.77
-0.16
125
0.0266
0.07
-0.16
-0.23
0.62
-0.18
130
0.0383
0.09
-0.17
-0.38
0.42
-0.17
135
0.0412
0.09
-0.17
-0.58
0.26
-0.15
140
0.0312
0.07
-0.15
-0.74
0.17
-0.14
145
0.0215
0.06
-0.13
-0.82
0.12
-0.12
150
0.0151
0.05
-0.12
-0.88
0.09
-0.11
155
0.0111
0.04
-0.10
-0.91
0.07
-0.10
160
0.0084
0.03
-0.09
-0.93
0.06
-0.09
165
0.0066
0.03
-0.08
-0.94
0.05
-0.08
170
0.0053
0.02
-0.08
-0.95
Quoted contract greeks from the delayed feed (not modeled here); the highlighted row is nearest to spot. Showing 15 strikes around the money — all 27 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.