SIBN Dark Pool Activity
ATS off-exchange volume intelligence · Week of 2026-07-06
SIBN dark pool volume for the week of 2026-07-06: 679.1K shares traded across 24 ATS venues with a total notional value of $11.8M. Volume is down 41.1% week-over-week. Primary routing venues include , MS TRAJECTORY CROSS (ATS-1), INTELLIGENT CROSS LLC.
Dark pool activity in SIBN 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 SIBN.
Weekly History
| Week | Shares | DP % | WoW |
|---|---|---|---|
| 2026-07-06 | 679.1K | — | -41.1% |
| 2026-06-29 | 1.2M | — | +78.0% |
| 2026-06-22 | 648.3K | — | +26.4% |
| 2026-06-15 | 512.9K | — | +41.6% |
| 2026-06-08 | 362.2K | — | -43.2% |
| 2026-06-01 | 637.7K | — | +82.0% |
| 2026-05-25 | 350.3K | — | -43.4% |
| 2026-05-18 | 619.3K | — | -69.5% |
| 2026-05-11 | 2.0M | — | +116.1% |
| 2026-05-04 | 940.9K | — | +15.9% |
| 2026-04-27 | 811.9K | — | — |
| 2026-03-23 | 625.7K | — | -36.7% |