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Parallax Volatility Advisers, L.P.: BLK position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of Parallax Volatility Advisers, L.P. on BLK, newest first. How the timeline and the estimate are built.

Parallax Volatility Advisers, L.P. held 0 BLK shares at 2026-03-31 per its 13F-HR filed 2026-05-15.

the latest 13F is the newest step

  1. period ended2026-03-31
    13F 0 shares
    Change vs previous 13F -6,652 shares

    13F-HR 0001172661-26-002271 filed by Parallax Volatility Advisers, L.P.
    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 ended2025-12-31
    13F 6,652 shares
    Change vs previous 13F -784 shares

    0.22% of the 13F portfolio, value $7,119,902.

    13F-HR 0001172661-26-001067 filed by Parallax Volatility Advisers, L.P.
    Filed (acceptance time not in the bulk data set), ingested

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

  3. period ended2025-09-30
    13F 7,436 shares
    Change vs previous 13F +7,436 shares

    0.26% of the 13F portfolio, value $8,669,409.

    13F-HR 0001172661-25-005017 filed by Parallax Volatility Advisers, L.P.
    Filed (acceptance time not in the bulk data set), ingested

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

  4. period ended2025-06-30
    13F 0 shares
    Change vs previous 13F -3,501 shares

    13F-HR 0001172661-25-003451 filed by Parallax Volatility Advisers, L.P.
    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.

  5. period ended2025-03-31
    13F 3,501 shares
    Change vs previous 13F -14,080 shares

    0.11% of the 13F portfolio, value $3,313,626.

    13F-HR 0001172661-25-002304 filed by Parallax Volatility Advisers, L.P.
    Filed (acceptance time not in the bulk data set), ingested

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

  6. period ended2024-12-31
    13F 17,581 shares
    Change vs previous 13F not available

    0.4% of the 13F portfolio, value $18,022,459.

    13F-HR 0001172661-25-001026 filed by Parallax Volatility Advisers, L.P.
    Filed (acceptance time not in the bulk data set), ingested

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