CSL Dark Pool Activity
ATS off-exchange volume intelligence · Week of 2026-07-20
CSL dark pool volume for the week of 2026-07-20: 781.4K shares traded across 22 ATS venues with a total notional value of $257.4M. Volume is up 4.5% week-over-week. Primary routing venues include , INTELLIGENT CROSS LLC, SIGMA X2.
Dark pool activity in CSL 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 CSL.
Weekly History
| Week | Shares | DP % | WoW |
|---|---|---|---|
| 2026-07-20 | 781.4K | — | +4.5% |
| 2026-07-13 | 747.8K | — | -42.6% |
| 2026-07-06 | 1.3M | — | +32.8% |
| 2026-06-29 | 980.6K | — | +84.1% |
| 2026-06-22 | 532.6K | — | +43.5% |
| 2026-06-15 | 371.2K | — | -31.1% |
| 2026-06-08 | 538.7K | — | +53.3% |
| 2026-06-01 | 351.5K | — | +29.4% |
| 2026-05-25 | 271.6K | — | -63.8% |
| 2026-05-18 | 750.0K | — | +80.8% |
| 2026-05-11 | 414.8K | — | -35.8% |
| 2026-05-04 | 645.6K | — | -4.8% |