STXS Dark Pool Activity
ATS off-exchange volume intelligence · Week of 2026-07-06
STXS dark pool volume for the week of 2026-07-06: 313.6K shares traded across 23 ATS venues with a total notional value of $557K. Volume is up 21.9% week-over-week. Primary routing venues include , INTELLIGENT CROSS LLC, INSTINCT X.
Dark pool activity in STXS 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 STXS.
Weekly History
| Week | Shares | DP % | WoW |
|---|---|---|---|
| 2026-07-06 | 313.6K | — | +21.9% |
| 2026-06-29 | 257.2K | — | -50.5% |
| 2026-06-22 | 519.6K | — | +84.4% |
| 2026-06-15 | 281.7K | — | +77.5% |
| 2026-06-08 | 158.7K | — | -51.7% |
| 2026-06-01 | 328.5K | — | +31.7% |
| 2026-05-25 | 249.5K | — | -9.8% |
| 2026-05-18 | 276.7K | — | -29.6% |
| 2026-05-11 | 392.9K | — | +78.2% |
| 2026-05-04 | 220.5K | — | -5.0% |
| 2026-04-27 | 232.1K | — | — |
| 2026-03-23 | 316.9K | — | +25.8% |