(JAMF) Institutional Ownership Changes & 13F Activity

JAMF. Institutional ownership data tracks hedge funds, asset managers, and other institutional investors based on recent SEC Form 13F filings. This page analyzes institutional buying and selling activity, new holdings, and sold-out positions among tracked filers. Notable filers include Mairs & Power Growth Fund, Renaissance Technologies LLC, Tiger Global Management, and Viking Global Investors.

Portfolio quarterNameTypeQuantityRemainingReported stock balance
Q3 2025Mairs & Power Growth FundSell-101,239298,112$3,189,798
Q3 2025Renaissance Technologies LLCSell-76,300109,100$1,167,370
Q2 2025Renaissance Technologies LLCBuy42,465185,400$1,763,154
Q2 2025Mairs & Power Growth FundBuy117399,351$3,797,828
Q1 2025Renaissance Technologies LLCSell-465142,935$1,736,660
Q1 2025Mairs & Power Growth FundBuy253399,234$4,850,693
Q4 2024Renaissance Technologies LLCBuy50,000143,400$2,014,770
Q4 2024Mairs & Power Growth FundSell-4,475398,981$5,605,683
Q3 2024Renaissance Technologies LLCSell-88,80093,400$1,620,490
Q3 2024Mairs & Power Growth FundSell-8,188403,456$6,999,962
Q2 2024Mairs & Power Growth FundSell-34,358411,644$6,792,126
Q2 2024Renaissance Technologies LLCSell-15,100182,200$3,006,300
Q1 2024Mairs & Power Growth FundSell-220,244446,002$8,184,137
Q1 2024Renaissance Technologies LLCSell-1,884197,300$3,620
Q4 2023Mairs & Power Growth FundSell-365,547666,246$12,032,403
Q4 2023Renaissance Technologies LLCSell-2,616199,184$3,597
Q3 2023Mairs & Power Growth FundSell-566,5331,031,793$18,221,464
Q3 2023Renaissance Technologies LLCSell-49,500201,800$3,564
Q2 2023Mairs & Power Growth FundSell-738,0671,598,326$31,199,324
Q2 2023Renaissance Technologies LLCBuy79,200251,300$4,905
Q1 2023Mairs & Power Growth FundBuy257,8972,336,393$45,372,752
Q1 2023Renaissance Technologies LLCBuy59,500172,100$3,342
Q4 2022Mairs & Power Growth FundBuy123,9872,078,496$44,271,965
Q4 2022Renaissance Technologies LLCBuy24,600112,600$2,398
Q3 2022Mairs & Power Growth FundBuy73,0571,954,509$43,312
Q3 2022Renaissance Technologies LLCBuy37,00088,000$1,950
Q2 2022Renaissance Technologies LLCSell-271,73951,000$1,263
Q2 2022Mairs & Power Growth FundBuy195,3751,881,452$46,604
Q1 2022Mairs & Power Growth FundBuy66,7271,686,077$58,692
Q4 2021Mairs & Power Growth FundBuy90,8241,619,350$61,551

Frequently asked questions about JAMF activity

  • Which institutional owners are buying JAMF?

    Institutional owners buying JAMF 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 JAMF activity?

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

  • Is institutional interest in JAMF increasing?

    Institutional interest in JAMF 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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