STRATASYS LTD (SSYS) Institutional Ownership Changes & 13F Activity
STRATASYS LTD (SSYS) 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, ARK Invest, Polen Capital Management, Disciplined Growth Investors, and Mairs & Power Growth Fund.
| Portfolio quarter | Name | Type | Quantity | Remaining | Reported stock balance |
|---|---|---|---|---|---|
| Q2 2020 | Renaissance Technologies LLC | Sell | -81,420 | 312,732 | $4,960 |
| Q2 2020 | Disciplined Growth Investors | Sell | -3,333 | 121,595 | $1,928 |
| Q1 2020 | ARK Invest | Buy | 1,331,203 | 9,795,137 | $156,232 |
| Q1 2020 | Disciplined Growth Investors | Sell | -16,440 | 124,928 | $1,993 |
| Q4 2019 | ARK Invest | Buy | 659,865 | 8,463,934 | $171,183 |
| Q4 2019 | Renaissance Technologies LLC | Sell | -600,980 | 394,152 | $7,972 |
| Q4 2019 | Disciplined Growth Investors | Sell | -4,897 | 141,368 | $2,859 |
| Q3 2019 | Renaissance Technologies LLC | Sell | -192,300 | 995,132 | $21,201 |
| Q3 2019 | ARK Invest | Buy | 92,124 | 7,804,069 | $166,266 |
| Q3 2019 | Disciplined Growth Investors | Sell | -238 | 146,265 | $3,116 |
| Q2 2019 | ARK Invest | Buy | 452,017 | 7,711,945 | $226,500 |
| Q2 2019 | Renaissance Technologies LLC | Sell | -14,966 | 1,187,432 | $34,875 |
| Q2 2019 | Disciplined Growth Investors | Buy | 888 | 146,503 | $4,303 |
| Q1 2019 | Renaissance Technologies LLC | Buy | 856,866 | 1,202,398 | $28,641 |
| Q1 2019 | ARK Invest | Buy | 485,770 | 7,259,928 | $172,931 |
| Q1 2019 | Mairs & Power Growth Fund | Sell | -4,800 | 8,500 | $202 |
| Q1 2019 | Disciplined Growth Investors | Buy | 941 | 145,615 | $3,469 |
| Q4 2018 | ARK Invest | Sell | -135,108 | 6,774,158 | $122,003 |
| Q4 2018 | Renaissance Technologies LLC | Buy | 99,400 | 345,532 | $6,223 |
| Q4 2018 | Disciplined Growth Investors | Sell | -321 | 144,674 | $2,606 |
| Q3 2018 | ARK Invest | Buy | 100,520 | 6,909,266 | $159,673 |
| Q3 2018 | Mairs & Power Growth Fund | Sell | -4,400 | 13,300 | $307 |
| Q3 2018 | Disciplined Growth Investors | Sell | -2,688 | 144,995 | $3,351 |
| Q2 2018 | ARK Invest | Buy | 1,970,216 | 6,808,746 | $130,319 |
| Q2 2018 | Mairs & Power Growth Fund | Sell | -272,045 | 17,700 | $339 |
| Q2 2018 | Fairfax Financial Holdings | Sell | -20,000 | 80,000 | $1,530 |
| Q2 2018 | Disciplined Growth Investors | Sell | -244 | 147,683 | $2,827 |
| Q1 2018 | ARK Invest | Buy | 2,077,005 | 4,838,530 | $97,642 |
| Q1 2018 | Mairs & Power Growth Fund | Sell | -104,385 | 289,745 | $5,847 |
| Q1 2018 | Fairfax Financial Holdings | Buy | 10,000 | 100,000 | $2,018 |
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.