SourcePut open interest divided by call open interest
As ofCboe delayed snapshot Nov 3, 7:36 PM ET
How4,492 put contracts / 6,644 call contracts = 0.68 for the 2026-11-13 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 3, 7:36 PM ET
HowOver every strike with open interest for the 2026-11-13 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 7.7% 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 — 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 7.7% of spot, more than the 5% we allow, so one strike decides it. Walls and gamma still print.
Open interest by strike · Fri, Nov 13
■ calls (up)■ puts (down)SPXS open contracts per strike for Fri, Nov 13.
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 13
■ calls (up)■ puts (down)Today's traded contracts per strike (delayed).
Implied volatility by strike · Fri, Nov 13
— call IV— put IVATM ≈ 57.9% · Quoted strikes only; illiquid wings with junk fits are dropped, not smoothed.
Gamma exposure by strike · Fri, Nov 13
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 13
Call Δ
Call Θ
Strike
Γ
Vega
Put Θ
Put Δ
0.95
-0.01
22.5
0.0493
0.00
-0.01
-0.05
0.92
-0.01
23
0.0701
0.01
-0.01
-0.08
0.88
-0.02
23.5
0.0966
0.01
-0.02
-0.12
0.82
-0.03
24
0.1256
0.01
-0.03
-0.18
0.74
-0.04
24.5
0.1504
0.01
-0.04
-0.26
0.65
-0.04
25
0.1651
0.02
-0.04
-0.35
0.56
-0.05
25.5
0.1680
0.02
-0.05
-0.43
0.48
-0.05
26
0.1618
0.02
-0.05
-0.52
0.41
-0.05
26.5
0.1502
0.02
-0.05
-0.59
0.35
-0.05
27
0.1361
0.02
-0.05
-0.65
0.30
-0.05
27.5
0.1216
0.01
-0.05
-0.70
0.25
-0.05
28
0.1078
0.01
-0.05
-0.74
0.22
-0.04
28.5
0.0952
0.01
-0.04
-0.78
0.19
-0.04
29
0.0839
0.01
-0.04
-0.81
0.16
-0.04
29.5
0.0740
0.01
-0.04
-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 29 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.