QQQCOCT 22Open interest change
Open interest in QQQ calls expiring Oct 22 rose 57,810 at the Oct 20 settlement
35,469 to 93,279 contracts between the Oct 19 and Oct 20 settlements, 163% of the prior figure.
QQQ · PUTS · OCT 21Settled
Open interest in QQQ puts expiring Oct 21 rose 106,090 at the Oct 20 settlement
As of . Source: Cboe settlement open interest archive.
On the page at squawkflow.com/options-flow/2026-10-20/qqq-puts-oct-21-2026-open-interest-change: the evidence table and the rule this settlement figure passed; and up to six other QQQ snapshots from Oct 20, 2026.
97,779 to 203,869 contracts between the Oct 19 and Oct 20 settlements, 108% of the prior figure.
Evidence
| Measure | Value |
|---|---|
| Open interest, earlier settlement | 97,779 |
| Open interest, later settlement | 203,869 |
| Change (contracts) | +106,090 |
| Change as a share of the earlier figure | 109% |
| Earlier settlement | Oct 19, 2026 |
| Later settlement | Oct 20, 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: 106,090; Change as a share of the earlier figure: 1.085
- Contracts traded behind each figure
- Open interest changed: 126
- Baseline
- median absolute open interest change share, contracts within a week: 0.3889
- 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 20, 2026
All QQQ snapshots on the hub- QQQCOCT 30Put/call by expiry
QQQ calls outnumbered puts 2.2 to 1 expiring Oct 30 (1 week out), vs a 0.8 median
The median is QQQ's call/put volume ratio for contracts 1 to 3 weeks out over the last 8 sessions. 14,701 call and 6,639 put contracts by 10:14 ET on Oct 20, 2026. Tracked: up to 40 strikes around the money across 31 expirations.
- QQQCOCT 22Put/call by expiry
QQQ calls outnumbered puts 1.9 to 1 expiring Oct 22, vs a 0.9 median
The median is QQQ's call/put volume ratio for contracts within a week over the last 8 sessions. 6,483 call and 3,355 put contracts by 09:39 ET on Oct 20, 2026. Tracked: up to 40 strikes around the money across 31 expirations.
- QQQP714OCT 20Volume vs open interest
QQQ 714 puts expiring Oct 20 (same day) traded 5.6x their open interest
QQQ puts expiring that date in the strikes we track traded 0.8x their open interest, by 09:35 ET on Oct 20, 2026. Tracked: up to 40 strikes around the money across 31 expirations.
- QQQPOCT 23Put/call by expiry
QQQ puts expiring Oct 23 traded 2.6x the calls, vs a 1.1x median
The median is QQQ's put/call volume ratio for contracts within a week over the last 8 sessions. 5,795 put and 2,223 call contracts by 09:35 ET on Oct 20, 2026. Tracked: up to 40 strikes around the money across 31 expirations.
- QQQPOCT 20Put/call by expiry
QQQ puts expiring Oct 20 (same day) traded 1.6x the calls, vs a 0.9x median
The median is QQQ's put/call volume ratio for contracts same day over the last 7 sessions. 94,332 put and 57,749 call contracts by 09:35 ET on Oct 20, 2026. Tracked: up to 40 strikes around the money across 31 expirations.