PIII Dark Pool Activity
ATS off-exchange volume intelligence · Week of 2026-07-06
PIII dark pool volume for the week of 2026-07-06: 13.2K shares traded across 18 ATS venues with a total notional value of $141K. Volume is down 17.0% week-over-week. Primary routing venues include , ONECHRONOS, IBKR ATS.
Dark pool activity in PIII 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 PIII.
Weekly History
| Week | Shares | DP % | WoW |
|---|---|---|---|
| 2026-07-06 | 13.2K | — | -17.0% |
| 2026-06-29 | 16.0K | — | +35.6% |
| 2026-06-22 | 11.8K | — | -1.6% |
| 2026-06-15 | 12.0K | — | -65.9% |
| 2026-06-08 | 35.0K | — | -71.0% |
| 2026-06-01 | 120.6K | — | +37.0% |
| 2026-05-25 | 88.0K | — | -86.0% |
| 2026-05-18 | 628.5K | — | -83.4% |
| 2026-05-11 | 3.8M | — | +75485.3% |
| 2026-05-04 | 5.0K | — | +38.0% |
| 2026-04-27 | 3.6K | — | — |
| 2026-03-23 | 6.9K | — | -67.8% |