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Atom Investors LP: MAS position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of Atom Investors LP on MAS, newest first. How the timeline and the estimate are built.

Atom Investors LP held 0 MAS shares at 2025-09-30 per its 13F-HR filed 2025-11-14.

the latest 13F is the newest step

  1. period ended2025-09-30
    13F 0 shares
    Change vs previous 13F -3,360 shares

    13F-HR 0001214659-25-016495 filed by Atom Investors LP
    Filed (acceptance time not in the bulk data set), ingested

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

    Exited: the 13F for this period no longer lists the position.

  2. period ended2025-06-30
    13F 3,360 shares
    Change vs previous 13F -117,296 shares

    0.02% of the 13F portfolio, value $216,250.

    13F-HR 0001214659-25-012165 filed by Atom Investors LP
    Filed (acceptance time not in the bulk data set), ingested

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

  3. period ended2025-03-31
    13F 120,656 shares
    Change vs previous 13F +64,600 shares

    1.03% of the 13F portfolio, value $8,390,418.

    13F-HR 0001214659-25-007681 filed by Atom Investors LP
    Filed (acceptance time not in the bulk data set), ingested

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

  4. period ended2024-12-31
    13F 56,056 shares
    Change vs previous 13F +36,119 shares

    0.51% of the 13F portfolio, value $4,067,984.

    13F-HR 0001214659-25-002663 filed by Atom Investors LP
    Filed (acceptance time not in the bulk data set), ingested

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

  5. period ended2024-09-30
    13F 19,937 shares
    Change vs previous 13F not available

    0.18% of the 13F portfolio, value $1,673,512.

    13F-HR 0001214659-24-018941 filed by Atom Investors LP
    Filed (acceptance time not in the bulk data set), ingested

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