PHIO Dark Pool Activity
ATS off-exchange volume intelligence · Week of 2026-07-06
PHIO dark pool volume for the week of 2026-07-06: 18.5K shares traded across 17 ATS venues with a total notional value of $19K. Volume is down 45.6% week-over-week. Primary routing venues include , INTELLIGENT CROSS LLC, IBKR ATS.
Dark pool activity in PHIO 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 PHIO.
Weekly History
| Week | Shares | DP % | WoW |
|---|---|---|---|
| 2026-07-06 | 18.5K | — | -45.6% |
| 2026-06-29 | 34.0K | — | -12.3% |
| 2026-06-22 | 38.8K | — | +198.2% |
| 2026-06-15 | 13.0K | — | -70.1% |
| 2026-06-08 | 43.5K | — | +105.2% |
| 2026-06-01 | 21.2K | — | +54.4% |
| 2026-05-25 | 13.7K | — | -30.8% |
| 2026-05-18 | 19.8K | — | -20.7% |
| 2026-05-11 | 25.0K | — | -2.3% |
| 2026-05-04 | 25.6K | — | -54.5% |
| 2026-04-27 | 56.3K | — | — |
| 2026-03-23 | 95.3K | — | +5.6% |