MDCX Dark Pool Activity
ATS off-exchange volume intelligence · Week of 2026-07-06
MDCX dark pool volume for the week of 2026-07-06: 167.6K shares traded across 18 ATS venues with a total notional value of $71K. Volume is down 19.2% week-over-week. Primary routing venues include , INTELLIGENT CROSS LLC, MS POOL (ATS-4).
Dark pool activity in MDCX 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 MDCX.
Weekly History
| Week | Shares | DP % | WoW |
|---|---|---|---|
| 2026-07-06 | 167.6K | — | -19.2% |
| 2026-06-29 | 207.5K | — | -45.2% |
| 2026-06-22 | 378.7K | — | -13.2% |
| 2026-06-15 | 436.3K | — | +163.2% |
| 2026-06-08 | 165.8K | — | -66.0% |
| 2026-06-01 | 487.9K | — | -17.7% |
| 2026-05-25 | 593.0K | — | +118.8% |
| 2026-05-18 | 271.0K | — | -17.3% |
| 2026-05-11 | 327.7K | — | -50.3% |
| 2026-05-04 | 659.4K | — | +72.3% |
| 2026-04-27 | 382.7K | — | — |
| 2026-03-23 | 305.8K | — | -54.1% |