SourcePut open interest divided by call open interest
As ofCboe delayed snapshot Nov 9, 7:45 PM ET
How1,236 put contracts / 1,586 call contracts = 0.78 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, 7:45 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 7.3% 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 7.3% 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)URTY 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
■ calls (up)■ puts (down)Today's traded contracts per strike (delayed).
Implied volatility by strike · Fri, Nov 20
— call IV— put IVATM ≈ 58.2% · 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
0.86
-0.10
60
0.0281
0.03
-0.10
-0.16
0.83
-0.11
61
0.0317
0.03
-0.10
-0.18
0.80
-0.12
62
0.0354
0.03
-0.11
-0.21
0.76
-0.12
63
0.0393
0.04
-0.12
-0.24
0.72
-0.13
64
0.0432
0.04
-0.13
-0.28
0.68
-0.13
65
0.0470
0.04
-0.13
-0.33
0.63
-0.14
66
0.0504
0.04
-0.13
-0.37
0.41
-0.13
70
0.0561
0.05
-0.12
-0.59
0.17
-0.07
75
0.0382
0.03
-0.07
-0.83
0.05
-0.03
80
0.0158
0.01
-0.03
-0.94
0.01
-0.01
85
0.0054
0.01
-0.01
-0.98
0.01
-0.00
90
0.0018
0.00
-0.00
-0.99
0.00
-0.00
95
0.0007
0.00
not quoted
-0.99
0.00
-0.00
100
0.0003
0.00
not quoted
-0.99
0.00
0.00
105
0.0001
0.00
not quoted
-0.99
Quoted contract greeks from the delayed feed (not modeled here); the highlighted row is nearest to spot. Showing 15 strikes around the money — all 34 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.