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EMERALD ADVISERS, LLC: BIIB position timeline

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

EMERALD ADVISERS, LLC held 9,379 BIIB shares at 2026-06-30 per its 13F-HR filed 2026-08-05.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 9,379 shares
    Change vs previous 13F +235 shares

    0.03% of the 13F portfolio, value $2,026,426.

    13F-HR 0001104659-26-090959 filed by EMERALD ADVISERS, LLC
    Filed (acceptance time not in the bulk data set), ingested

    • EMERALD ADVISERS, LLC: 5,990 shares
    • EMERALD MUTUAL FUND ADVISERS TRUST: 3,389 shares

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

  2. period ended2026-03-31
    13F 9,144 shares
    Change vs previous 13F +652 shares

    0.03% of the 13F portfolio, value $1,676,370.

    13F-HR 0001104659-26-054901 filed by EMERALD ADVISERS, LLC
    Filed (acceptance time not in the bulk data set), ingested

    • EMERALD ADVISERS, LLC: 6,027 shares
    • EMERALD MUTUAL FUND ADVISERS TRUST: 3,117 shares

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

  3. period ended2025-12-31
    13F 8,492 shares
    Change vs previous 13F +1,622 shares

    0.03% of the 13F portfolio, value $1,494,507.

    13F-HR 0001104659-26-011928 filed by EMERALD ADVISERS, LLC
    Filed (acceptance time not in the bulk data set), ingested

    • EMERALD ADVISERS, LLC: 6,027 shares
    • EMERALD MUTUAL FUND ADVISERS TRUST: 2,465 shares

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

  4. period ended2025-09-30
    13F 6,870 shares
    Change vs previous 13F +3,689 shares

    0.02% of the 13F portfolio, value $962,350.

    13F-HR 0001104659-25-104111 filed by EMERALD ADVISERS, LLC
    Filed (acceptance time not in the bulk data set), ingested

    • EMERALD ADVISERS, LLC: 6,247 shares
    • EMERALD MUTUAL FUND ADVISERS TRUST: 623 shares

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

  5. period ended2025-06-30
    13F 3,181 shares
    Change vs previous 13F not available

    0.01% of the 13F portfolio, value $399,502.

    13F-HR 0001104659-25-073440 filed by EMERALD ADVISERS, LLC
    Filed (acceptance time not in the bulk data set), ingested

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