IDEX CORP (IEX) Institutional Ownership Changes & 13F Activity

IDEX CORP (IEX) 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, Sequoia Financial Advisors, Dodge & Cox Stock Fund, Fundsmith, and Mairs & Power Growth Fund.

Portfolio quarterNameTypeQuantityRemainingReported stock balance
Q1 2026Renaissance Technologies LLCSell-85,90084,525$16,021,714
Q1 2026Sequoia Financial AdvisorsBuy443,166$600,132
Q4 2025Dodge & Cox Stock FundBuy918,2081,262,550$224,658,147
Q4 2025Sequoia Financial AdvisorsBuy1,5533,122$555,530
Q3 2025Dodge & Cox Stock FundBuy344,342344,342$56,045,104
Q3 2025Renaissance Technologies LLCBuy161,900170,425$27,738,373
Q2 2025Renaissance Technologies LLCSell-37,2008,525$1,496,734
Q2 2025Sequoia Financial AdvisorsBuy1,5691,569$275,471
Q3 2024Renaissance Technologies LLCSell-10,30045,725$9,808,013
Q2 2024Renaissance Technologies LLCBuy22,10056,025$11,272,230
Q2 2024FundsmithSell-11,401362,501$72,935,201
Q1 2024FundsmithSell-10,095373,902$91,239,566
Q4 2023Renaissance Technologies LLCSell-215,60033,925$7,365
Q4 2023FundsmithSell-5,011383,997$83,369,589
Q3 2023Renaissance Technologies LLCSell-74,300249,525$51,906
Q3 2023FundsmithSell-2,116389,008$80,921,444
Q2 2023FundsmithBuy127,384391,124$84,193,352
Q2 2023Renaissance Technologies LLCBuy64,900323,825$69,707
Q1 2023Renaissance Technologies LLCBuy79,487258,925$59,819
Q4 2022FundsmithBuy167,812263,740$60,219,754
Q4 2022Renaissance Technologies LLCBuy84,638179,438$40,971
Q3 2022Renaissance Technologies LLCSell-150,72594,800$18,946
Q3 2022FundsmithBuy95,92895,928$19,171
Q3 2022Mairs & Power Growth FundSell-724,000$799
Q2 2022Renaissance Technologies LLCBuy51,300245,525$44,595
Q1 2022Renaissance Technologies LLCBuy49,400194,225$37,239
Q4 2021Renaissance Technologies LLCBuy48,900144,825$34,225
Q3 2021Renaissance Technologies LLCBuy6,90095,925$19,852
Q2 2021Renaissance Technologies LLCBuy78,50089,025$19,590
Q4 2020Renaissance Technologies LLCSell-93,50010,525$2,097

Frequently asked questions about IEX activity

  • Which institutional owners are buying IEX?

    Institutional owners buying IEX 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 IEX activity?

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

  • Is institutional interest in IEX increasing?

    Institutional interest in IEX 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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