SourcePut open interest divided by call open interest
As ofCboe delayed snapshot Nov 10, 6:53 PM ET
How1,246 put contracts / 1,176 call contracts = 1.06 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, 6:53 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 9.9% 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 9.9% 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)SCO 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 ≈ 68.7% · 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
0.89
-0.02
16.5
0.0521
0.01
-0.02
-0.11
0.86
-0.02
17
0.0634
0.01
-0.02
-0.14
0.83
-0.02
17.5
0.0761
0.01
-0.03
-0.17
0.79
-0.03
18
0.0898
0.01
-0.03
-0.21
0.74
-0.03
18.5
0.1037
0.01
-0.03
-0.26
0.69
-0.03
19
0.1167
0.01
-0.03
-0.32
0.63
-0.03
19.5
0.1274
0.02
-0.03
-0.38
0.56
-0.03
20
0.1345
0.02
-0.04
-0.44
0.49
-0.04
20.5
0.1370
0.02
-0.04
-0.51
0.42
-0.03
21
0.1349
0.02
-0.03
-0.58
0.36
-0.03
21.5
0.1287
0.02
-0.03
-0.64
0.31
-0.03
22
0.1196
0.01
-0.03
-0.70
0.26
-0.03
22.5
0.1086
0.01
-0.03
-0.75
0.21
-0.03
23
0.0971
0.01
-0.03
-0.79
0.18
-0.02
23.5
0.0857
0.01
-0.02
-0.82
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.