SourcePut open interest divided by call open interest
As ofCboe delayed snapshot Nov 10, 9:51 PM ET
How18 put contracts / 25 call contracts = 0.72 for the 2027-02-19 expiration. Open interest is published once a day, before the open, so it describes the previous session.
Too thin to read: 43 open contracts across 15 strikes. Max pain, walls and gamma print from 100 contracts across 5 strikes.
Event risk before this expiration:Jobs report Fri, Dec 4 · FOMC decision Wed, Dec 9 · CPI release Thu, Dec 10 — macro releases historically overwhelm pinning effects; max pain reads weakest in event weeks.
Too thin to read: 43 open contracts across 15 strikes. Max pain, walls and gamma print from 100 contracts across 5 strikes.
Open interest by strike · Fri, Feb 19
■ calls (up)■ puts (down)SAH open contracts per strike for Fri, Feb 19.
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, Feb 19
Implied volatility by strike · Fri, Feb 19
— call IV— put IVATM ≈ 46.4% · Quoted strikes only; illiquid wings with junk fits are dropped, not smoothed.
Greeks by strike · Fri, Feb 19
Call Δ
Call Θ
Strike
Γ
Vega
Put Θ
Put Δ
0.91
-0.01
45
0.0096
0.06
-0.02
-0.11
0.85
-0.02
50
0.0147
0.08
-0.02
-0.16
0.50
-0.03
65
0.0292
0.13
-0.03
-0.53
0.38
-0.03
70
0.0260
0.13
-0.03
-0.65
0.30
-0.03
75
0.0218
0.11
-0.03
-0.73
0.25
-0.03
80
0.0182
0.10
-0.03
-0.79
0.21
-0.03
85
0.0153
0.09
-0.02
-0.83
0.18
-0.03
90
0.0131
0.09
-0.02
-0.85
0.09
-0.02
125
0.0061
0.05
-0.01
-0.94
0.09
-0.02
130
0.0056
0.05
-0.01
-0.95
Quoted contract greeks from the delayed feed (not modeled here); the highlighted row is nearest to spot. Showing 10 strikes around the money — all 15 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.