EMERGENT BIOSOLUTIONS INC (EBS) Institutional Ownership Changes & 13F Activity

EMERGENT BIOSOLUTIONS INC (EBS) 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 Renaissance Technologies LLC and Ariel Appreciation Fund.

Portfolio quarterNameTypeQuantityRemainingReported stock balance
Q3 2016Renaissance Technologies LLCSell-96,1001,178,111$37,146
Q2 2016Renaissance Technologies LLCBuy161,4001,274,211$35,831
Q1 2016Renaissance Technologies LLCBuy161,2001,112,811$40,451
Q4 2015Renaissance Technologies LLCBuy177,400951,611$38,074
Q3 2015Renaissance Technologies LLCBuy102,700774,211$22,057
Q2 2015Renaissance Technologies LLCBuy84,700671,511$22,126
Q1 2015Renaissance Technologies LLCBuy75,700586,811$16,877
Q4 2014Renaissance Technologies LLCSell-28,300511,111$13,918
Q3 2014Renaissance Technologies LLCSell-68,100539,411$11,495
Q2 2014Renaissance Technologies LLCSell-155,387607,511$13,645
Q1 2014Renaissance Technologies LLCBuy199,287762,898$19,278
Q4 2013Ariel Appreciation FundBuy63,050122,650$2,820
Q4 2013Renaissance Technologies LLCSell-33,900563,611$12,957
Q3 2013Renaissance Technologies LLCSell-126,300597,511$11,383
Q3 2013Ariel Appreciation FundBuy32,10059,600$1,135
Q2 2013Renaissance Technologies LLCBuy723,811723,811$10,437
Q2 2013Ariel Appreciation FundBuy27,50027,500$397

Frequently asked questions about EBS activity

  • Which institutional owners are buying EBS?

    Institutional owners buying EBS 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 EBS activity?

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

  • Is institutional interest in EBS increasing?

    Institutional interest in EBS 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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