FOUR Dark Pool Activity
ATS off-exchange volume intelligence · Week of 2026-07-20
FOUR dark pool volume for the week of 2026-07-20: 1.1M shares traded across 26 ATS venues with a total notional value of $55.9M. Volume is down 25.6% week-over-week. Primary routing venues include , SIGMA X2, MS TRAJECTORY CROSS (ATS-1).
Dark pool activity in FOUR 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 FOUR.
Weekly History
| Week | Shares | DP % | WoW |
|---|---|---|---|
| 2026-07-20 | 1.1M | — | -25.6% |
| 2026-07-13 | 1.5M | — | -21.3% |
| 2026-07-06 | 2.0M | — | +11.7% |
| 2026-06-29 | 1.8M | — | -53.9% |
| 2026-06-22 | 3.8M | — | +100.2% |
| 2026-06-15 | 1.9M | — | -30.3% |
| 2026-06-08 | 2.7M | — | +29.7% |
| 2026-06-01 | 2.1M | — | +101.4% |
| 2026-05-25 | 1.0M | — | -41.3% |
| 2026-05-18 | 1.8M | — | -19.7% |
| 2026-05-11 | 2.2M | — | -44.0% |
| 2026-05-04 | 3.9M | — | +87.8% |