QQQPFEB 19 '27Open interest change
Open interest in QQQ puts expiring Feb 19, 2027 rose 19,539 at the Oct 19 settlement
95,423 to 114,962 contracts between the Oct 16 and Oct 19 settlements, 20% of the prior figure.
QQQ · PUTS · OCT 20Settled
Open interest in QQQ puts expiring Oct 20 rose 124,625 at the Oct 19 settlement
As of . Source: Cboe settlement open interest archive.
On the page at squawkflow.com/options-flow/2026-10-19/qqq-puts-oct-20-2026-open-interest-change: the evidence table and the rule this settlement figure passed; and up to six other QQQ snapshots from Oct 19, 2026.
106,476 to 231,101 contracts between the Oct 16 and Oct 19 settlements, 117% of the prior figure.
Evidence
| Measure | Value |
|---|---|
| Open interest, earlier settlement | 106,476 |
| Open interest, later settlement | 231,101 |
| Change (contracts) | +124,625 |
| Change as a share of the earlier figure | 117% |
| Earlier settlement | Oct 16, 2026 |
| Later settlement | Oct 19, 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: 124,625; Change as a share of the earlier figure: 1.1705
- Contracts traded behind each figure
- Open interest changed: 129
- Baseline
- median absolute open interest change share, contracts within a week: 0.4144
- 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 QQQ snapshots, Oct 19, 2026
All QQQ snapshots on the hub- QQQPOCT 30Put/call by expiry
QQQ puts expiring Oct 30 (2 weeks out) traded 2.1x the calls, vs a 1.2x median
The median is QQQ's put/call volume ratio for contracts 1 to 3 weeks out over the last 7 sessions. 54,183 put and 25,664 call contracts by 13:44 ET on Oct 19, 2026. Tracked: up to 40 strikes around the money across 31 expirations.
- QQQP719OCT 19Volume vs open interest
QQQ 719 puts expiring Oct 19 (same day) traded 8.1x their open interest
QQQ puts expiring that date in the strikes we track traded 0.8x their open interest, by 09:39 ET on Oct 19, 2026. Tracked: up to 40 strikes around the money across 31 expirations.
- QQQPNOV 6Put/call by expiry
QQQ puts expiring Nov 6 (3 weeks out) traded 3.0x the calls, vs a 1.2x median
The median is QQQ's put/call volume ratio for contracts 1 to 3 weeks out over the last 7 sessions. 2,713 put and 904 call contracts by 09:35 ET on Oct 19, 2026. Tracked: up to 40 strikes around the money across 31 expirations.
- QQQCOCT 21Put/call by expiry
QQQ calls outnumbered puts 1.6 to 1 expiring Oct 21, vs a 0.9 median
The median is QQQ's call/put volume ratio for contracts within a week over the last 7 sessions. 7,708 call and 4,909 put contracts by 09:35 ET on Oct 19, 2026. Tracked: up to 40 strikes around the money across 31 expirations.
- QQQOCT 19Same-day share
Same-day contracts accounted for 67% of tracked QQQ option volume by 09:35 ET
144,032 of 215,528 tracked contracts on Oct 19, 2026, puts 52,249 and calls 91,783. Tracked: up to 40 strikes around the money across 31 expirations.