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
Q3 2017Renaissance Technologies LLCBuy16,40093,026$5,680
Q3 2017Mairs & Power Growth FundBuy3,3003,300$201
Q2 2017Parnassus Endeavor FundSell-147,8471,152,153$61,963
Q2 2017Renaissance Technologies LLCBuy17,20076,626$4,121
Q1 2017Parnassus Endeavor FundBuy185,0001,300,000$65,572
Q4 2016Parnassus Endeavor FundBuy488,7001,115,000$55,036
Q4 2016Renaissance Technologies LLCSell-179,90059,426$2,933
Q3 2016Parnassus Endeavor FundBuy226,300626,300$28,566
Q1 2016Renaissance Technologies LLCSell-160,874239,326$10,303
Q1 2016Parnassus Endeavor FundBuy45,000400,000$17,220
Q4 2015Renaissance Technologies LLCSell-210,100400,200$20,970
Q4 2015Parnassus Endeavor FundSell-49,095355,000$18,602
Q3 2015Renaissance Technologies LLCSell-292,900610,300$29,435
Q2 2015Renaissance Technologies LLCSell-265,526903,200$44,284
Q2 2015Parnassus Endeavor FundSell-50,905404,095$19,813
Q1 2015Renaissance Technologies LLCSell-527,0001,168,726$51,529
Q1 2015Parnassus Endeavor FundSell-80,000455,000$20,061
Q4 2014Renaissance Technologies LLCSell-116,0001,695,726$67,897
Q4 2014Parnassus Endeavor FundSell-27,632535,000$21,421
Q3 2014Renaissance Technologies LLCBuy14,4001,811,726$65,512
Q3 2014Parnassus Endeavor FundSell-7,192562,632$20,345
Q2 2014Parnassus Endeavor FundBuy359,824569,824$18,673
Q2 2014Renaissance Technologies LLCBuy301,9001,797,326$58,898
Q1 2014Renaissance Technologies LLCBuy331,6261,495,426$50,261
Q1 2014Parnassus Endeavor FundBuy32,500210,000$7,058
Q4 2013Renaissance Technologies LLCBuy74,0741,163,800$40,419
Q4 2013Parnassus Endeavor FundBuy27,500177,500$6,165
Q3 2013Renaissance Technologies LLCBuy239,8001,089,726$33,683
Q2 2013Renaissance Technologies LLCBuy849,926849,926$24,163
Q2 2013Parnassus Endeavor FundBuy150,000150,000$4,265

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.

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