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Round Rock Advisors LLC: MEM position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of Round Rock Advisors LLC on MEM, newest first. How the timeline and the estimate are built.

Round Rock Advisors LLC held 11,611 MEM shares at 2026-06-30 per its 13F-HR filed 2026-08-12.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 11,611 shares
    Change vs previous 13F -23 shares

    0.07% of the 13F portfolio, value $525,542.

    13F-HR 0001951757-26-001257 filed by Round Rock Advisors LLC
    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 11,634 shares
    Change vs previous 13F 0 shares

    0.07% of the 13F portfolio, value $432,110.

    13F-HR 0001951757-26-000878 filed by Round Rock Advisors LLC
    Filed (acceptance time not in the bulk data set), ingested

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

  3. period ended2025-12-31
    13F/A 11,634 shares
    Change vs previous 13F 0 shares

    0.06% of the 13F portfolio, value $416,594.

    13F-HR/A 0001951757-26-000520 filed by Round Rock Advisors LLC
    Filed (acceptance time not in the bulk data set), ingested

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

  4. period ended2025-09-30
    13F 11,634 shares
    Change vs previous 13F 0 shares

    0.07% of the 13F portfolio, value $421,650.

    13F-HR 0001951757-25-001443 filed by Round Rock Advisors LLC
    Filed (acceptance time not in the bulk data set), ingested

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

  5. period ended2025-06-30
    13F 11,634 shares
    Change vs previous 13F -5,360 shares

    0.07% of the 13F portfolio, value $378,132.

    13F-HR 0001951757-25-001039 filed by Round Rock Advisors LLC
    Filed (acceptance time not in the bulk data set), ingested

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

  6. period ended2025-03-31
    13F 16,994 shares
    Change vs previous 13F 0 shares

    0.09% of the 13F portfolio, value $498,094.

    13F-HR 0001951757-25-000487 filed by Round Rock Advisors LLC
    Filed (acceptance time not in the bulk data set), ingested

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

  7. period ended2024-12-31
    13F 16,994 shares
    Change vs previous 13F 0 shares

    0.1% of the 13F portfolio, value $491,636.

    13F-HR 0001951757-25-000115 filed by Round Rock Advisors LLC
    Filed (acceptance time not in the bulk data set), ingested

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

  8. period ended2024-09-30
    13F 16,994 shares
    Change vs previous 13F not available

    0.13% of the 13F portfolio, value $560,955.

    13F-HR 0001951757-24-001162 filed by Round Rock Advisors LLC
    Filed (acceptance time not in the bulk data set), ingested

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