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Disclosery

Blackstone Inc.: MPLX position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of Blackstone Inc. on MPLX, newest first. How the timeline and the estimate are built.

Blackstone Inc. held 12,956,943 MPLX shares at 2026-06-30 per its 13F-HR filed 2026-08-14.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 12,956,943 shares
    Change vs previous 13F -2,393,740 shares

    2.38% of the 13F portfolio, value $729,864,599.

    13F-HR 0001193125-26-352211 filed by Blackstone Inc.
    Filed (acceptance time not in the bulk data set), ingested

    Acceptance time not in the bulk data set (spec §4.2).

  2. period ended2026-03-31
    13F/A 15,350,683 shares
    Change vs previous 13F not available

    3.58% of the 13F portfolio, value $876,063,479.

    13F-HR 0001193125-26-226672 filed by Blackstone Inc.
    Filed (acceptance time not in the bulk data set), ingested

    Acceptance time not in the bulk data set (spec §4.2).