SEI INVESTMENTS COMPANY (SEIC) Institutional Ownership Changes & 13F Activity

SEI INVESTMENTS COMPANY (SEIC) 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 Sequoia Financial Advisors, Renaissance Technologies LLC, Cullen Value Fund, Kahn Brothers Group, and Torray Fund.

Portfolio quarterNameTypeQuantityRemainingReported stock balance
Q2 2022Renaissance Technologies LLCBuy318,626342,326$18,492
Q1 2022Renaissance Technologies LLCSell-86,52623,700$1,427
Q4 2021Renaissance Technologies LLCSell-66,300110,226$6,717
Q3 2021Renaissance Technologies LLCBuy129,500176,526$10,468
Q2 2021Renaissance Technologies LLCSell-148,70047,026$2,914
Q1 2021Renaissance Technologies LLCBuy50,400195,726$11,926
Q1 2021Torray FundBuy30,651224,440$13,675
Q4 2020Renaissance Technologies LLCSell-177,600145,326$8,352
Q4 2020Torray FundBuy69193,789$11,137
Q3 2020Torray FundBuy193,720193,720$9,825
Q3 2020Renaissance Technologies LLCBuy28,000322,926$16,379
Q2 2020Renaissance Technologies LLCSell-601,500294,926$16,215
Q2 2020Parnassus Endeavor FundSell-463,351461,351$25,365
Q1 2020Parnassus Endeavor FundSell-611,994924,702$42,851
Q1 2020Ariel Appreciation FundBuy67,37867,378$3,122
Q1 2020Renaissance Technologies LLCBuy41,026896,426$41,540
Q4 2019Parnassus Endeavor FundBuy162,2891,536,696$100,623
Q4 2019Renaissance Technologies LLCSell-124,026855,400$56,012
Q3 2019Parnassus Endeavor FundSell-155,0131,374,407$81,440
Q3 2019Renaissance Technologies LLCSell-140,800979,426$58,036
Q2 2019Renaissance Technologies LLCBuy149,9001,120,226$62,845
Q2 2019Parnassus Endeavor FundSell-61,0541,529,420$85,800
Q1 2019Renaissance Technologies LLCBuy376,317970,326$50,700
Q1 2019Parnassus Endeavor FundBuy322,2541,590,474$83,102
Q4 2018Renaissance Technologies LLCBuy385,083594,009$27,443
Q4 2018Parnassus Endeavor FundBuy170,6751,268,220$58,592
Q3 2018Renaissance Technologies LLCBuy179,300208,926$12,765
Q1 2018Renaissance Technologies LLCSell-43,67429,626$2,219
Q4 2017Parnassus Endeavor FundSell-54,6081,097,545$78,870
Q4 2017Renaissance Technologies LLCSell-19,72673,300$5,267

Frequently asked questions about SEIC activity

  • Which institutional owners are buying SEIC?

    Institutional owners buying SEIC 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 SEIC activity?

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

  • Is institutional interest in SEIC increasing?

    Institutional interest in SEIC 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.

Related SEIC insights