Skip to content
Disclosery

MILLENNIUM MANAGEMENT LLC: ASPN position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of MILLENNIUM MANAGEMENT LLC on ASPN, newest first. How the timeline and the estimate are built.

MILLENNIUM MANAGEMENT LLC held 1,190,616 ASPN shares at 2026-06-30 per its 13F-HR filed 2026-08-14.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 1,190,616 shares
    Change vs previous 13F -214,059 shares

    0.01% of the 13F portfolio, value $7,548,505.

    13F-HR 0001273087-26-000007 filed by MILLENNIUM MANAGEMENT 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 1,404,675 shares
    Change vs previous 13F +533,724 shares

    <0.01% of the 13F portfolio, value $4,803,988.

    13F-HR 0001273087-26-000004 filed by MILLENNIUM MANAGEMENT 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 870,951 shares
    Change vs previous 13F -576,566 shares

    <0.01% of the 13F portfolio, value $2,464,791.

    13F-HR 0001273087-26-000002 filed by MILLENNIUM MANAGEMENT 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 1,447,517 shares
    Change vs previous 13F +540,772 shares

    0.01% of the 13F portfolio, value $10,074,718.

    13F-HR 0001273087-25-000034 filed by MILLENNIUM MANAGEMENT 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 906,745 shares
    Change vs previous 13F -692,647 shares

    <0.01% of the 13F portfolio, value $5,367,930.

    13F-HR 0001273087-25-000028 filed by MILLENNIUM MANAGEMENT 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 1,599,392 shares
    Change vs previous 13F -22,630 shares

    0.01% of the 13F portfolio, value $10,220,115.

    13F-HR 0001273087-25-000019 filed by MILLENNIUM MANAGEMENT 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 1,622,022 shares
    Change vs previous 13F +1,588,632 shares

    0.02% of the 13F portfolio, value $19,269,621.

    13F-HR 0001273087-25-000015 filed by MILLENNIUM MANAGEMENT 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 33,390 shares
    Change vs previous 13F not available

    <0.01% of the 13F portfolio, value $924,569.

    13F-HR 0001273087-24-000118 filed by MILLENNIUM MANAGEMENT LLC
    Filed (acceptance time not in the bulk data set), ingested

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