STRATASYS LTD (SSYS) Stock Institutional Trading Activity


STRATASYS LTD (SSYS) position changes reported by tracked institutional filers across multiple SEC 13F reporting periods. Based on recent SEC 13F filings (Q4 2025), investors with some of the largest reported share count changes include Renaissance Technologies LLC, Polen Capital Management, ARK Invest, Disciplined Growth Investors, and Mairs & Power Growth Fund. Explore insights into buying and selling patterns, position changes, and investment conviction levels to understand institutional trading behavior and market dynamics.

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Portfolio quarterNameTypeQuantityRemainingReported stock balance
Q1 2020Disciplined Growth InvestorsSell-16,440124,928$1,993
Q4 2019ARK InvestBuy659,8658,463,934$171,183
Q4 2019Renaissance Technologies LLCSell-600,980394,152$7,972
Q4 2019Disciplined Growth InvestorsSell-4,897141,368$2,859
Q3 2019ARK InvestBuy92,1247,804,069$166,266
Q3 2019Renaissance Technologies LLCSell-192,300995,132$21,201
Q3 2019Disciplined Growth InvestorsSell-238146,265$3,116
Q2 2019Renaissance Technologies LLCSell-14,9661,187,432$34,875
Q2 2019ARK InvestBuy452,0177,711,945$226,500
Q2 2019Disciplined Growth InvestorsBuy888146,503$4,303
Q1 2019Mairs & Power Growth FundSell-4,8008,500$202
Q1 2019ARK InvestBuy485,7707,259,928$172,931
Q1 2019Renaissance Technologies LLCBuy856,8661,202,398$28,641
Q1 2019Disciplined Growth InvestorsBuy941145,615$3,469
Q4 2018ARK InvestSell-135,1086,774,158$122,003
Q4 2018Renaissance Technologies LLCBuy99,400345,532$6,223
Q4 2018Disciplined Growth InvestorsSell-321144,674$2,606
Q3 2018Mairs & Power Growth FundSell-4,40013,300$307
Q3 2018ARK InvestBuy100,5206,909,266$159,673
Q3 2018Disciplined Growth InvestorsSell-2,688144,995$3,351
Q2 2018Mairs & Power Growth FundSell-272,04517,700$339
Q2 2018Fairfax Financial HoldingsSell-20,00080,000$1,530
Q2 2018ARK InvestBuy1,970,2166,808,746$130,319
Q2 2018Disciplined Growth InvestorsSell-244147,683$2,827
Q1 2018Mairs & Power Growth FundSell-104,385289,745$5,847
Q1 2018Fairfax Financial HoldingsBuy10,000100,000$2,018
Q1 2018ARK InvestBuy2,077,0054,838,530$97,642
Q1 2018Disciplined Growth InvestorsSell-365147,927$2,985
Q4 2017Mairs & Power Growth FundSell-483,470394,130$7,867
Q4 2017Fairfax Financial HoldingsBuy9,00090,000$1,796

Frequently asked questions about SSYS activity

  • Which institutional owners are buying SSYS?

    Institutional owners buying SSYS 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 SSYS activity?

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

  • Is institutional interest in SSYS increasing?

    Institutional interest in SSYS 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.