OIS Dark Pool Activity
ATS off-exchange volume intelligence · Week of 2026-07-06
OIS dark pool volume for the week of 2026-07-06: 603.6K shares traded across 24 ATS venues with a total notional value of $4.9M. Volume is up 16.6% week-over-week. Primary routing venues include , INTELLIGENT CROSS LLC, MS TRAJECTORY CROSS (ATS-1).
Dark pool activity in OIS 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 OIS.
Weekly History
| Week | Shares | DP % | WoW |
|---|---|---|---|
| 2026-07-06 | 603.6K | — | +16.6% |
| 2026-06-29 | 517.5K | — | -23.4% |
| 2026-06-22 | 675.2K | — | +13.4% |
| 2026-06-15 | 595.5K | — | +9.8% |
| 2026-06-08 | 542.2K | — | -19.4% |
| 2026-06-01 | 672.5K | — | -3.2% |
| 2026-05-25 | 694.7K | — | +1.8% |
| 2026-05-18 | 682.4K | — | -44.0% |
| 2026-05-11 | 1.2M | — | -9.3% |
| 2026-05-04 | 1.3M | — | +83.6% |
| 2026-04-27 | 732.6K | — | — |
| 2026-03-23 | 1.1M | — | +36.5% |