PFF Dark Pool Activity
ATS off-exchange volume intelligence · Week of 2026-07-20
PFF dark pool volume for the week of 2026-07-20: 2.0M shares traded across 23 ATS venues with a total notional value of $60.3M. Volume is up 58.9% week-over-week. Primary routing venues include , UBS ATS, INTELLIGENT CROSS LLC.
Dark pool activity in PFF 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 PFF.
Weekly History
| Week | Shares | DP % | WoW |
|---|---|---|---|
| 2026-07-20 | 2.0M | — | +58.9% |
| 2026-07-13 | 1.3M | — | -13.5% |
| 2026-07-06 | 1.5M | — | -34.6% |
| 2026-06-29 | 2.2M | — | -16.3% |
| 2026-06-22 | 2.7M | — | +65.3% |
| 2026-06-15 | 1.6M | — | -36.3% |
| 2026-06-08 | 2.5M | — | -2.4% |
| 2026-06-01 | 2.6M | — | +171.5% |
| 2026-05-25 | 949.6K | — | -50.4% |
| 2026-05-18 | 1.9M | — | +3.0% |
| 2026-05-11 | 1.9M | — | -9.4% |
| 2026-05-04 | 2.1M | — | +25.7% |