OBIO Dark Pool Activity
ATS off-exchange volume intelligence · Week of 2026-07-06
OBIO dark pool volume for the week of 2026-07-06: 165.4K shares traded across 23 ATS venues with a total notional value of $661K. Volume is down 40.3% week-over-week. Primary routing venues include , MS POOL (ATS-4), INTELLIGENT CROSS LLC.
Dark pool activity in OBIO 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 OBIO.
Weekly History
| Week | Shares | DP % | WoW |
|---|---|---|---|
| 2026-07-06 | 165.4K | — | -40.3% |
| 2026-06-29 | 277.2K | — | -2.5% |
| 2026-06-22 | 284.4K | — | +88.5% |
| 2026-06-15 | 150.9K | — | -41.8% |
| 2026-06-08 | 259.2K | — | +0.0% |
| 2026-06-01 | 259.2K | — | -16.9% |
| 2026-05-25 | 311.8K | — | -34.1% |
| 2026-05-18 | 473.4K | — | +119.3% |
| 2026-05-11 | 215.8K | — | +12.0% |
| 2026-05-04 | 192.6K | — | +15.5% |
| 2026-04-27 | 166.8K | — | — |
| 2026-03-23 | 131.2K | — | -43.1% |