OSG Dark Pool Activity
ATS off-exchange volume intelligence · Week of 2026-07-06
OSG dark pool volume for the week of 2026-07-06: 430.1K shares traded across 23 ATS venues with a total notional value of $2.7M. Volume is up 14.4% week-over-week. Primary routing venues include , MS TRAJECTORY CROSS (ATS-1), UBS ATS.
Dark pool activity in OSG 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 OSG.
Weekly History
| Week | Shares | DP % | WoW |
|---|---|---|---|
| 2026-07-06 | 430.1K | — | +14.4% |
| 2026-06-29 | 376.1K | — | -36.1% |
| 2026-06-22 | 588.9K | — | +38.5% |
| 2026-06-15 | 425.2K | — | +62.1% |
| 2026-06-08 | 262.4K | — | -37.9% |
| 2026-06-01 | 422.5K | — | +20.8% |
| 2026-05-25 | 349.8K | — | -30.5% |
| 2026-05-18 | 503.0K | — | -1.3% |
| 2026-05-11 | 509.6K | — | -56.7% |
| 2026-05-04 | 1.2M | — | +256.5% |
| 2026-04-27 | 330.4K | — | — |
| 2026-03-23 | 561.9K | — | -16.9% |