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ARDSLEY ADVISORY PARTNERS LP: FLR position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of ARDSLEY ADVISORY PARTNERS LP on FLR, newest first. How the timeline and the estimate are built.

ARDSLEY ADVISORY PARTNERS LP held 142,500 FLR shares at 2026-06-30 per its 13F-HR filed 2026-07-13.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 142,500 shares
    Change vs previous 13F +60,000 shares

    0.81% of the 13F portfolio, value $7,465,575.

    13F-HR 0001172661-26-002590 filed by ARDSLEY ADVISORY 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 82,500 shares
    Change vs previous 13F +2,514 shares

    0.59% of the 13F portfolio, value $3,848,625.

    13F-HR 0001172661-26-002039 filed by ARDSLEY ADVISORY 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 79,986 shares
    Change vs previous 13F -55,014 shares

    0.4% of the 13F portfolio, value $3,169,845.

    13F-HR 0001172661-26-000864 filed by ARDSLEY ADVISORY 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 135,000 shares
    Change vs previous 13F -661,000 shares

    0.87% of the 13F portfolio, value $5,679,450.

    13F-HR 0001172661-25-004897 filed by ARDSLEY ADVISORY 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 796,000 shares
    Change vs previous 13F +61,000 shares

    6.67% of the 13F portfolio, value $40,810,920.

    13F-HR 0001172661-25-003308 filed by ARDSLEY ADVISORY 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 735,000 shares
    Change vs previous 13F +180,000 shares

    6.1% of the 13F portfolio, value $26,327,700.

    13F-HR 0001172661-25-002033 filed by ARDSLEY ADVISORY 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 555,000 shares
    Change vs previous 13F +219,650 shares

    5.3% of the 13F portfolio, value $27,372,600.

    13F-HR 0001172661-25-000980 filed by ARDSLEY ADVISORY 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 335,350 shares
    Change vs previous 13F not available

    3.03% of the 13F portfolio, value $15,999,549.

    13F-HR 0001172661-24-004816 filed by ARDSLEY ADVISORY PARTNERS LP
    Filed (acceptance time not in the bulk data set), ingested

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