908 DEVICES INC (MASS) Institutional Ownership Changes & 13F Activity

908 DEVICES INC (MASS). 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 First Eagle U.S. Value, ARK Invest, and Renaissance Technologies LLC.

Portfolio quarterNameTypeQuantityRemainingReported stock balance
Q1 2026First Eagle U.S. ValueBuy179,723803,606$4,918,069
Q1 2026ARK InvestSell-39,3011,946,685$11,913,711
Q1 2026Renaissance Technologies LLCBuy8,100230,200$1,408,824
Q4 2025ARK InvestBuy32,2141,985,986$10,426,428
Q4 2025First Eagle U.S. ValueBuy19,921623,883$3,275,386
Q4 2025Renaissance Technologies LLCBuy12,800222,100$1,166,025
Q3 2025ARK InvestSell-694,5061,953,772$17,115,042
Q3 2025First Eagle U.S. ValueBuy336,584603,962$5,290,707
Q3 2025Renaissance Technologies LLCBuy35,200209,300$1,833,468
Q2 2025First Eagle U.S. ValueBuy267,378267,378$1,906,405
Q2 2025ARK InvestSell-251,0692,648,278$18,882,224
Q2 2025Renaissance Technologies LLCBuy29,500174,100$1,241,333
Q1 2025Renaissance Technologies LLCSell-150,356144,600$647,808
Q1 2025ARK InvestBuy110,7812,899,347$12,989,076
Q4 2024ARK InvestSell-430,9832,788,566$6,134,845
Q4 2024Renaissance Technologies LLCSell-27,444294,956$648,903
Q3 2024ARK InvestSell-718,0823,219,549$11,171,835
Q3 2024Renaissance Technologies LLCBuy126,900322,400$1,118,728
Q2 2024ARK InvestSell-111,3073,937,631$20,278,802
Q2 2024Renaissance Technologies LLCBuy86,500195,500$1,006,825
Q1 2024ARK InvestSell-297,6414,048,938$30,569,481
Q1 2024Renaissance Technologies LLCBuy12,100109,000$823
Q4 2023ARK InvestBuy333,1194,346,579$48,768,618
Q4 2023Renaissance Technologies LLCBuy12,20096,900$1,087
Q3 2023ARK InvestBuy40,5554,013,460$26,729,642
Q3 2023Renaissance Technologies LLCSell-30,00084,700$564
Q2 2023Renaissance Technologies LLCSell-37,400114,700$787
Q2 2023ARK InvestSell-19,9943,972,905$27,254,130
Q1 2023ARK InvestBuy303,4243,992,899$34,338,931
Q1 2023Renaissance Technologies LLCSell-80,300152,100$1,308

Frequently asked questions about MASS activity

  • Which institutional owners are buying MASS?

    Institutional owners buying MASS 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 MASS activity?

    "Buy" means an investor increased their reported position in MASS compared to the prior reporting period. This reflects growing exposure to 908 DEVICES INC (MASS) rather than necessarily a brand-new position (though new positions also appear as buys when prior quantity was zero).

  • Is institutional interest in MASS increasing?

    Institutional interest in MASS 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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