OSW Dark Pool Activity
ATS off-exchange volume intelligence · Week of 2026-07-06
OSW dark pool volume for the week of 2026-07-06: 1.0M shares traded across 23 ATS venues with a total notional value of $28.0M. Volume is up 11.6% week-over-week. Primary routing venues include , INTELLIGENT CROSS LLC, MS TRAJECTORY CROSS (ATS-1).
Dark pool activity in OSW 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 OSW.
Weekly History
| Week | Shares | DP % | WoW |
|---|---|---|---|
| 2026-07-06 | 1.0M | — | +11.6% |
| 2026-06-29 | 931.5K | — | -38.8% |
| 2026-06-22 | 1.5M | — | +53.7% |
| 2026-06-15 | 990.8K | — | +10.1% |
| 2026-06-08 | 900.1K | — | +52.6% |
| 2026-06-01 | 589.9K | — | +51.8% |
| 2026-05-25 | 388.7K | — | -45.5% |
| 2026-05-18 | 713.8K | — | -6.1% |
| 2026-05-11 | 759.9K | — | -28.8% |
| 2026-05-04 | 1.1M | — | -28.8% |
| 2026-04-27 | 1.5M | — | — |
| 2026-03-23 | 754.3K | — | -16.0% |