AAPLCOCT 21Open interest change
Open interest in AAPL calls expiring Oct 21 (1 week out) rose 11,722 at the Oct 13 settlement
2,712 to 14,434 contracts between the Oct 12 and Oct 13 settlements, 432% of the prior figure.
AAPL · CALLS · OCT 14Settled
Open interest in AAPL calls expiring Oct 14 rose 44,078 at the Oct 13 settlement
As of . Source: Cboe settlement open interest archive.
39,181 to 83,259 contracts between the Oct 12 and Oct 13 settlements, 112% of the prior figure.
Evidence
| Measure | Value |
|---|---|
| Open interest, earlier settlement | 39,181 |
| Open interest, later settlement | 83,259 |
| Change (contracts) | +44,078 |
| Change as a share of the earlier figure | 113% |
| Earlier settlement | Oct 12, 2026 |
| Later settlement | Oct 13, 2026 |
| Days to expiry | 1 |
Why it fired
- Rule
- |change| >= 10000 or (>= 2000 and >= 50% of prior), and |change share| >= 2.0 x bucket median; prior OI >= 1000
- Values that cleared it
- Change: 44,078; Change as a share of the earlier figure: 1.125
- Contracts traded behind each figure
- Open interest changed: 43
- Baseline
- median absolute open interest change share, contracts within a week: 0.4364
- Baseline window
- last 20 sessions
- Baseline n
- 20
- Claim level
- 0, a reported fact
What happened next
This snapshot is itself a settlement figure, so it has no follow-up of its own.
More AAPL snapshots, Oct 13, 2026
All AAPL snapshots on the hub- AAPLCOCT 21Put/call by expiry
AAPL calls outnumbered puts 6.8 to 1 in contracts expiring Oct 21 (1 week out)
14,576 call and 2,155 put contracts by 15:40 ET on Oct 13, 2026. Est. premium $2.3M calls, $986K puts. Tracked: up to 40 strikes around the money across 25 expirations.
- AAPLP342.5OCT 16Volume vs open interest
AAPL 342.5 puts expiring Oct 16 traded 5.1x their open interest
AAPL puts expiring that date in the strikes we track traded 0.3x their open interest, by 12:06 ET on Oct 13, 2026. Tracked: up to 40 strikes around the money across 25 expirations.
- AAPLPDEC 18Put/call by expiry
AAPL puts expiring Dec 18 traded 4.3x the calls on that date
9,969 put and 2,304 call contracts by 09:51 ET on Oct 13, 2026. Est. premium $1.9M puts, $2.8M calls. Tracked: up to 40 strikes around the money across 25 expirations.
- AAPLCOCT 23Put/call by expiry
AAPL calls outnumbered puts 4.2 to 1 in contracts expiring Oct 23 (1 week out)
15,969 call and 3,796 put contracts by 09:40 ET on Oct 13, 2026. Est. premium $9.5M calls, $1.2M puts. Tracked: up to 40 strikes around the money across 25 expirations.
- AAPLCJAN 15 '27Put/call by expiry
AAPL calls outnumbered puts 5.2 to 1 in contracts expiring Jan 15, 2027
3,510 call and 675 put contracts by 09:35 ET on Oct 13, 2026. Est. premium $6.4M calls, $437K puts. Tracked: up to 40 strikes around the money across 25 expirations.