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Disclosery

CenterBook Partners LP: ECHO position timeline

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

CenterBook Partners LP held 135,076 ECHO 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 135,076 shares
    Change vs previous 13F +122,692 shares

    0.67% of the 13F portfolio, value $13,710,214.

    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 12,384 shares
    Change vs previous 13F +6,780 shares

    0.08% of the 13F portfolio, value $1,449,795.

    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 5,604 shares
    Change vs previous 13F -210,579 shares

    0.03% of the 13F portfolio, value $609,155.

    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 216,183 shares
    Change vs previous 13F not available

    0.82% of the 13F portfolio, value $16,507,734.

    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).