PTIR Dark Pool Activity
ATS off-exchange volume intelligence · Week of 2026-07-06
PTIR dark pool volume for the week of 2026-07-06: 1.6M shares traded across 23 ATS venues with a total notional value of $18.8M. Volume is down 0.3% week-over-week. Primary routing venues include , INTELLIGENT CROSS LLC, UBS ATS.
Dark pool activity in PTIR 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 PTIR.
Weekly History
| Week | Shares | DP % | WoW |
|---|---|---|---|
| 2026-07-06 | 1.6M | — | -0.3% |
| 2026-06-29 | 1.6M | — | -23.8% |
| 2026-06-22 | 2.1M | — | +136.5% |
| 2026-06-15 | 891.2K | — | -29.0% |
| 2026-06-08 | 1.3M | — | -54.9% |
| 2026-06-01 | 2.8M | — | +30.3% |
| 2026-05-25 | 2.1M | — | +88.9% |
| 2026-05-18 | 1.1M | — | -21.1% |
| 2026-05-11 | 1.4M | — | -33.7% |
| 2026-05-04 | 2.2M | — | +154.7% |
| 2026-04-27 | 848.6K | — | — |
| 2026-03-23 | 2.0M | — | +12.5% |