PNR Dark Pool Activity
ATS off-exchange volume intelligence · Week of 2026-07-20
PNR dark pool volume for the week of 2026-07-20: 4.8M shares traded across 27 ATS venues with a total notional value of $301.4M. Volume is down 45.9% week-over-week. Off-exchange dark pool transactions account for 34.4% of total PNR market volume — elevated above the typical 10–14% institutional baseline, potentially signaling active accumulation or distribution. Primary routing venues include , UBS ATS, INTELLIGENT CROSS LLC.
Dark pool activity in PNR 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 PNR.
Weekly History
| Week | Shares | DP % | WoW |
|---|---|---|---|
| 2026-07-20 | 4.8M | 34.4% | -45.9% |
| 2026-07-13 | 8.9M | — | +187.2% |
| 2026-07-06 | 3.1M | — | +82.6% |
| 2026-06-29 | 1.7M | — | -43.9% |
| 2026-06-22 | 3.0M | — | +92.4% |
| 2026-06-15 | 1.6M | — | -38.1% |
| 2026-06-08 | 2.6M | — | -40.4% |
| 2026-06-01 | 4.3M | — | +44.8% |
| 2026-05-25 | 3.0M | — | -0.4% |
| 2026-05-18 | 3.0M | — | +5.2% |
| 2026-05-11 | 2.8M | — | +16.2% |
| 2026-05-04 | 2.4M | — | -60.8% |