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Disclosery

CenterBook Partners LP: MAS position timeline

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

CenterBook Partners LP held 4,283 MAS shares at 2026-06-30 per its 13F-HR filed 2026-08-11.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 4,283 shares
    Change vs previous 13F -44,893 shares

    0.02% of the 13F portfolio, value $348,508.

    13F-HR 0001872738-26-000010 filed by CenterBook Partners LP
    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 49,176 shares
    Change vs previous 13F +36,095 shares

    0.16% of the 13F portfolio, value $2,968,755.

    13F-HR 0001872738-26-000008 filed by CenterBook Partners LP
    Filed (acceptance time not in the bulk data set), ingested

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

  3. period ended2025-12-31
    13F 13,081 shares
    Change vs previous 13F +2,724 shares

    0.04% of the 13F portfolio, value $830,120.

    13F-HR 0000902664-26-000841 filed by CenterBook Partners LP
    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 10,357 shares
    Change vs previous 13F -15,483 shares

    0.04% of the 13F portfolio, value $729,029.

    13F-HR 0000902664-25-004789 filed by CenterBook Partners LP
    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 25,840 shares
    Change vs previous 13F +7,014 shares

    0.09% of the 13F portfolio, value $1,663,062.

    13F-HR 0000902664-25-003518 filed by CenterBook Partners LP
    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 18,826 shares
    Change vs previous 13F +18,826 shares

    0.08% of the 13F portfolio, value $1,309,160.

    13F-HR 0000902664-25-002221 filed by CenterBook Partners LP
    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 0 shares
    Change vs previous 13F -5,680 shares

    13F-HR 0000902664-25-000921 filed by CenterBook Partners 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.

  8. period ended2024-09-30
    13F 5,680 shares
    Change vs previous 13F not available

    0.03% of the 13F portfolio, value $476,779.

    13F-HR 0000902664-24-006587 filed by CenterBook Partners LP
    Filed (acceptance time not in the bulk data set), ingested

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