QQQCOCT 19Open interest change
Open interest in QQQ calls expiring Oct 19 rose 111,671 at the Oct 16 settlement
89,462 to 201,133 contracts between the Oct 15 and Oct 16 settlements, 125% of the prior figure.
QQQ · PUTS · OCT 29Settled
Open interest in QQQ puts expiring Oct 29 (2 weeks out) rose 15,463 at the Oct 16 settlement
As of . Source: Cboe settlement open interest archive.
On the page at squawkflow.com/options-flow/2026-10-16/qqq-puts-oct-29-2026-open-interest-change: the evidence table and the rule this settlement figure passed; and up to six other QQQ snapshots from Oct 16, 2026.
4,312 to 19,775 contracts between the Oct 15 and Oct 16 settlements, 359% of the prior figure.
Evidence
| Measure | Value |
|---|---|
| Open interest, earlier settlement | 4,312 |
| Open interest, later settlement | 19,775 |
| Change (contracts) | +15,463 |
| Change as a share of the earlier figure | 359% |
| Earlier settlement | Oct 15, 2026 |
| Later settlement | Oct 16, 2026 |
| Days to expiry | 13 |
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: 15,463; Change as a share of the earlier figure: 3.586
- Contracts traded behind each figure
- Open interest changed: 79
- Baseline
- median absolute open interest change share, contracts 1 to 3 weeks out: 0.2902
- 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 16, 2026
All QQQ snapshots on the hub- QQQPOCT 22Put/call by expiry
QQQ puts expiring Oct 22 traded 3.2x the calls, vs a 1.2x median
The median is QQQ's put/call volume ratio for contracts within a week over the last 6 sessions. 43,914 put and 13,791 call contracts by 15:54 ET on Oct 16, 2026. Tracked: up to 40 strikes around the money across 30 expirations.
- QQQPNOV 20Put/call by expiry
QQQ puts expiring Nov 20 traded 2.1x the calls, vs a 1.2x median
The median is QQQ's put/call volume ratio for contracts 1 to 3 months out over the last 6 sessions. 105,407 put and 50,950 call contracts by 13:39 ET on Oct 16, 2026. Tracked: up to 40 strikes around the money across 31 expirations.
- QQQNear vs far dates
QQQ put/call volume ratio held at 1.02 within 3 weeks, against 2.05 1 to 3 months out
Within 3 weeks: 3,273,528 put and 3,204,929 call contracts. 1 to 3 months out: 156,161 put and 76,154 call contracts. By 13:39 ET on Oct 16, 2026. Tracked: up to 40 strikes around the money across 31 expirations.
- QQQPOCT 30Put/call by expiry
QQQ puts expiring Oct 30 (2 weeks out) traded 2.2x the calls, vs a 1.0x median
The median is QQQ's put/call volume ratio for contracts 1 to 3 weeks out over the last 6 sessions. 27,618 put and 12,463 call contracts by 11:09 ET on Oct 16, 2026. Tracked: up to 40 strikes around the money across 31 expirations.
- QQQCOCT 20Put/call by expiry
QQQ calls outnumbered puts 1.5 to 1 expiring Oct 20, vs a 0.9 median
The median is QQQ's call/put volume ratio for contracts within a week over the last 6 sessions. 17,474 call and 11,301 put contracts by 09:49 ET on Oct 16, 2026. Tracked: up to 40 strikes around the money across 31 expirations.