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
Q4 2020Renaissance Technologies LLCSell-82,80043,400$5,789
Q4 2020Polen Capital ManagementBuy19,06283,910$11,192
Q3 2020Renaissance Technologies LLCBuy104,100126,200$11,311
Q3 2020Polen Capital ManagementBuy30,61564,848$5,812
Q2 2020Renaissance Technologies LLCSell-69,40022,100$1,832
Q2 2020Polen Capital ManagementBuy34,23334,233$2,838
Q1 2020Renaissance Technologies LLCSell-118,20091,500$4,814
Q4 2019Renaissance Technologies LLCBuy83,800209,700$10,812
Q3 2019Renaissance Technologies LLCBuy11,399125,900$6,019
Q4 2018Renaissance Technologies LLCSell-4,089114,501$4,689
Q3 2018Renaissance Technologies LLCSell-278,210118,590$6,697
Q1 2018Renaissance Technologies LLCBuy215,400396,800$15,559
Q4 2017Renaissance Technologies LLCSell-67,000181,400$5,950
Q2 2017Renaissance Technologies LLCBuy157,605248,400$8,878
Q1 2017Renaissance Technologies LLCBuy90,79590,795$2,702

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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