BLACKLINE INC (BL) Institutional Ownership Changes & 13F Activity

BLACKLINE INC (BL) institutional ownership data tracks hedge funds, asset managers, and other institutional investors based on recent SEC 13F filings (Q1 2026). This page analyzes institutional buying and selling activity, new holdings, and sold-out positions among tracked filers. Notable filers include Engaged Capital, Polen Capital Management, Renaissance Technologies LLC, and Meritage Group.

Portfolio quarterNameTypeQuantityRemainingReported stock balance
Q1 2026Engaged CapitalBuy284,0001,367,619$50,601,903
Q4 2025Engaged CapitalBuy629,8251,083,619$59,913,295
Q3 2025Engaged CapitalSell-155,919453,794$24,096,461
Q2 2025Polen Capital ManagementSell-50,3364,763$269,681
Q2 2025Renaissance Technologies LLCSell-28,1004,400$249,128
Q1 2025Polen Capital ManagementSell-7,69255,099$2,667,912
Q4 2024Polen Capital ManagementSell-6,50662,791$3,815,181
Q3 2024Engaged CapitalBuy609,713609,713$33,619,575
Q3 2024Polen Capital ManagementSell-34,71069,297$3,821,058
Q2 2024Polen Capital ManagementSell-4,757104,007$5,039,116
Q1 2024Renaissance Technologies LLCSell-53,50032,500$2,099
Q1 2024Polen Capital ManagementSell-2,240108,764$7,024,002
Q4 2023Meritage GroupSell-715,201358,000$22,354
Q4 2023Polen Capital ManagementSell-4,795111,004$6,931,079
Q3 2023Meritage GroupBuy1,073,2011,073,201$59,530
Q3 2023Polen Capital ManagementSell-1,860115,799$6,423,374
Q2 2023Polen Capital ManagementSell-4,580117,659$6,332,416
Q1 2023Polen Capital ManagementSell-851122,239$8,208,397
Q4 2022Polen Capital ManagementSell-23,132123,090$8,280,264
Q3 2022Polen Capital ManagementBuy14,015146,222$8,759
Q2 2022Renaissance Technologies LLCSell-108,90086,000$5,728
Q2 2022Polen Capital ManagementSell-22,490132,207$8,805
Q1 2022Renaissance Technologies LLCBuy108,900194,900$14,271
Q1 2022Polen Capital ManagementSell-4,879154,697$11,327
Q4 2021Polen Capital ManagementBuy37,726159,576$16,522
Q3 2021Polen Capital ManagementBuy10,624121,850$14,386
Q2 2021Renaissance Technologies LLCSell-135,50086,000$9,569
Q2 2021Polen Capital ManagementBuy6,709111,226$12,376
Q1 2021Renaissance Technologies LLCBuy178,100221,500$24,011
Q1 2021Polen Capital ManagementBuy20,607104,517$11,330

Frequently asked questions about BL activity

  • Which institutional owners are buying BL?

    Institutional owners buying BL include investors who have either initiated new positions or increased their existing holdings based on recent SEC 13F filings. The activity table above highlights which funds added shares in the latest reporting periods and how their positions changed over time.

  • What does "buy" mean in BL activity?

    "Buy" means an investor increased their reported position in BL compared to the prior reporting period. This reflects growing exposure to BLACKLINE INC (BL) rather than necessarily a brand-new position (though new positions also appear as buys when prior quantity was zero).

  • Is institutional interest in BL increasing?

    Institutional interest in BL can be assessed by comparing the number of tracked funds adding or increasing positions versus those trimming or exiting across the periods shown. A higher number of additions typically signals increasing participation among large filers, but it should be read alongside position sizes and the full table.

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