CLB Dark Pool Activity
ATS off-exchange volume intelligence · Week of 2026-07-06
CLB dark pool volume for the week of 2026-07-06: 1.2M shares traded across 23 ATS venues with a total notional value of $12.8M. Volume is down 29.2% week-over-week. Primary routing venues include , MS TRAJECTORY CROSS (ATS-1), INTELLIGENT CROSS LLC.
Dark pool activity in CLB 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 CLB.
Weekly History
| Week | Shares | DP % | WoW |
|---|---|---|---|
| 2026-07-06 | 1.2M | — | -29.2% |
| 2026-06-29 | 1.6M | — | +27.1% |
| 2026-06-22 | 1.3M | — | +83.1% |
| 2026-06-15 | 704.2K | — | -36.4% |
| 2026-06-08 | 1.1M | — | +97.1% |
| 2026-06-01 | 561.7K | — | +10.1% |
| 2026-05-25 | 510.3K | — | -33.0% |
| 2026-05-18 | 761.7K | — | +26.5% |
| 2026-05-11 | 602.3K | — | -11.0% |
| 2026-05-04 | 676.9K | — | +5.5% |
| 2026-04-27 | 641.8K | — | — |
| 2026-03-23 | 452.4K | — | +10.8% |