(SRDX) Institutional Ownership Changes & 13F Activity

SRDX. 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 Disciplined Growth Investors, Mairs & Power Growth Fund, and Renaissance Technologies LLC.

Portfolio quarterNameTypeQuantityRemainingReported stock balance
Q2 2025Disciplined Growth InvestorsSell-102,333100,620$2,989,420
Q1 2025Disciplined Growth InvestorsSell-26,631202,953$6,196,155
Q4 2024Disciplined Growth InvestorsSell-47,292229,584$9,091,526
Q3 2024Disciplined Growth InvestorsSell-303,690276,876$10,737,251
Q3 2024Mairs & Power Growth FundSell-2,3747,626$295,736
Q2 2024Disciplined Growth InvestorsSell-78,609580,566$24,406,995
Q2 2024Renaissance Technologies LLCBuy28,990606,538$25,498,858
Q1 2024Disciplined Growth InvestorsBuy44,284659,175$19,340,194
Q1 2024Renaissance Technologies LLCSell-6,590577,548$16,945
Q4 2023Disciplined Growth InvestorsBuy19,188614,891$22,351,288
Q4 2023Renaissance Technologies LLCBuy6,073584,138$21,233
Q3 2023Disciplined Growth InvestorsBuy188,623595,703$19,116,109
Q3 2023Renaissance Technologies LLCSell-13,073578,065$18,550
Q2 2023Renaissance Technologies LLCSell-41,894591,138$18,509
Q2 2023Disciplined Growth InvestorsBuy2,089407,080$12,745,675
Q1 2023Renaissance Technologies LLCBuy51,794633,032$14,420
Q1 2023Mairs & Power Growth FundSell-42,76410,000$227,800
Q1 2023Disciplined Growth InvestorsSell-3,992404,991$9,225,695
Q4 2022Renaissance Technologies LLCSell-59,000581,238$19,832
Q4 2022Mairs & Power Growth FundSell-10,32052,764$1,800,308
Q4 2022Disciplined Growth InvestorsBuy1,111408,983$13,954,500
Q3 2022Renaissance Technologies LLCSell-36,762640,238$19,463
Q3 2022Mairs & Power Growth FundSell-8,44963,084$1,918
Q3 2022Disciplined Growth InvestorsBuy333407,872$12,399
Q2 2022Renaissance Technologies LLCSell-8,500677,000$25,205
Q2 2022Disciplined Growth InvestorsBuy1,037407,539$15,173
Q2 2022Mairs & Power Growth FundSell-7171,533$2,663
Q1 2022Renaissance Technologies LLCSell-34,138685,500$31,074
Q1 2022Mairs & Power Growth FundBuy11,14071,604$3,246
Q1 2022Disciplined Growth InvestorsBuy6,523406,502$18,427

Frequently asked questions about SRDX activity

  • Which institutional owners are buying SRDX?

    Institutional owners buying SRDX 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 SRDX activity?

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

  • Is institutional interest in SRDX increasing?

    Institutional interest in SRDX 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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