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CenterBook Partners LP: AER position timeline

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

CenterBook Partners LP held 4,410 AER 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 4,410 shares
    Change vs previous 13F -18,707 shares

    0.03% of the 13F portfolio, value $642,890.

    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 23,117 shares
    Change vs previous 13F -3,563 shares

    0.17% of the 13F portfolio, value $3,171,190.

    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 26,680 shares
    Change vs previous 13F +1,894 shares

    0.19% of the 13F portfolio, value $3,835,517.

    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 24,786 shares
    Change vs previous 13F +20,358 shares

    0.15% of the 13F portfolio, value $2,999,106.

    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 4,428 shares
    Change vs previous 13F -2,888 shares

    0.03% of the 13F portfolio, value $518,076.

    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 7,316 shares
    Change vs previous 13F -28,567 shares

    0.05% of the 13F portfolio, value $747,476.

    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 35,883 shares
    Change vs previous 13F +14,607 shares

    0.21% of the 13F portfolio, value $3,434,003.

    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).

  8. period ended2024-09-30
    13F 21,276 shares
    Change vs previous 13F not available

    0.12% of the 13F portfolio, value $2,015,263.

    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).