SRDX Dark Pool Activity
ATS off-exchange volume intelligence · Week of 2025-11-17
SRDX dark pool volume for the week of 2025-11-17: 2.3M shares traded across 25 ATS venues with a total notional value of $100.0M. Volume is up 162.0% week-over-week. Primary routing venues include , UBS ATS, INTELLIGENT CROSS LLC.
Dark pool activity in SRDX 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 SRDX.
Weekly History
| Week | Shares | DP % | WoW |
|---|---|---|---|
| 2025-11-17 | 2.3M | — | +162.0% |
| 2025-11-10 | 892.6K | — | +331.1% |
| 2025-11-03 | 207.0K | — | — |
| 2025-10-20 | 101.3K | — | -3.7% |
| 2025-10-13 | 105.2K | — | -52.9% |
| 2025-10-06 | 223.5K | — | +33.0% |
| 2025-09-29 | 168.1K | — | -45.3% |
| 2025-09-22 | 307.4K | — | +20.8% |
| 2025-09-15 | 254.4K | — | +14.4% |
| 2025-09-08 | 222.4K | — | -0.9% |
| 2025-09-01 | 224.4K | — | +3.4% |
| 2025-08-25 | 217.0K | — | -81.2% |