MPLX Dark Pool Activity
ATS off-exchange volume intelligence · Week of 2026-07-06
MPLX dark pool volume for the week of 2026-07-06: 1.2M shares traded across 22 ATS venues with a total notional value of $68.3M. Volume is up 79.9% week-over-week. Primary routing venues include , INTELLIGENT CROSS LLC, ONECHRONOS.
Dark pool activity in MPLX 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 MPLX.
Weekly History
| Week | Shares | DP % | WoW |
|---|---|---|---|
| 2026-07-06 | 1.2M | — | +79.9% |
| 2026-06-29 | 664.0K | — | -51.5% |
| 2026-06-22 | 1.4M | — | +29.4% |
| 2026-06-15 | 1.1M | — | -13.5% |
| 2026-06-08 | 1.2M | — | -4.4% |
| 2026-06-01 | 1.3M | — | -20.6% |
| 2026-05-25 | 1.6M | — | +3.7% |
| 2026-05-18 | 1.6M | — | +0.6% |
| 2026-05-11 | 1.5M | — | -36.3% |
| 2026-05-04 | 2.4M | — | +45.6% |
| 2026-04-27 | 1.7M | — | — |
| 2026-03-23 | 1.3M | — | -12.6% |