XXI Dark Pool Activity
ATS off-exchange volume intelligence · Week of 2026-07-06
XXI dark pool volume for the week of 2026-07-06: 490.7K shares traded across 23 ATS venues with a total notional value of $2.7M. Volume is down 28.8% week-over-week. Primary routing venues include , INTELLIGENT CROSS LLC, MS TRAJECTORY CROSS (ATS-1).
Dark pool activity in XXI reflects institutional order flow executing on Alternative Trading Systems (ATS) registered with the SEC — private venues where large-block trades are matched away from public exchanges to minimize price impact. StonkWhisper ingests FINRA-published ATS volume data to track these off-exchange flows. Sustained elevation in dark pool percentage — particularly when concentrated at specific venues — can indicate institutional accumulation or distribution ahead of significant price moves. The interactive charts below show 12-week historical volume and complete venue breakdown for XXI.
Weekly History
| Week | Shares | DP % | WoW |
|---|---|---|---|
| 2026-07-06 | 490.7K | — | -28.8% |
| 2026-06-29 | 688.7K | — | -10.2% |
| 2026-06-22 | 767.1K | — | +1.1% |
| 2026-06-15 | 759.1K | — | -4.4% |
| 2026-06-08 | 793.7K | — | -28.6% |
| 2026-06-01 | 1.1M | — | +35.5% |
| 2026-05-25 | 821.0K | — | -21.4% |
| 2026-05-18 | 1.0M | — | +37.8% |
| 2026-05-11 | 757.9K | — | -7.8% |
| 2026-05-04 | 821.9K | — | -33.7% |
| 2026-04-27 | 1.2M | — | — |
| 2026-03-23 | 1.8M | — | +25.9% |