MERIT MEDICAL SYSTEMS INC (MMSI) Stock Institutional Trading Activity


MERIT MEDICAL SYSTEMS INC (MMSI) 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 and Sequoia Financial Advisors. 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
Q4 2025Renaissance Technologies LLCBuy51,300126,212$11,124,326
Q3 2025Sequoia Financial AdvisorsBuy602,600$216,398
Q3 2025Renaissance Technologies LLCSell-96,00074,912$6,234,926
Q2 2025Sequoia Financial AdvisorsBuy482,540$237,440
Q2 2025Renaissance Technologies LLCBuy4,300170,912$15,976,854
Q1 2025Sequoia Financial AdvisorsSell-232,492$263,430
Q1 2025Renaissance Technologies LLCBuy57,900166,612$17,612,555
Q4 2024Sequoia Financial AdvisorsBuy292,515$243,251
Q4 2024Renaissance Technologies LLCBuy15,400108,712$10,514,625
Q3 2024Sequoia Financial AdvisorsSell-642,486$245,692
Q3 2024Renaissance Technologies LLCSell-2,10093,312$9,222,025
Q2 2024Sequoia Financial AdvisorsSell-1,8912,550$219,173
Q2 2024Renaissance Technologies LLCSell-18,20095,412$8,200,661
Q1 2024Renaissance Technologies LLCBuy82,700113,612$8,606
Q1 2024Sequoia Financial AdvisorsBuy4,4414,441$336,406
Q3 2023Renaissance Technologies LLCSell-24,80030,912$2,134
Q2 2023Renaissance Technologies LLCSell-7,80055,712$4,660
Q1 2023Renaissance Technologies LLCBuy38,10363,512$4,697
Q2 2022Renaissance Technologies LLCSell-23,60325,409$1,379
Q3 2021Renaissance Technologies LLCBuy26,20049,012$3,519
Q2 2021Renaissance Technologies LLCBuy13,60022,812$1,475
Q1 2019Renaissance Technologies LLCSell-20,8009,212$570
Q1 2018Renaissance Technologies LLCSell-107,60030,012$1,361
Q3 2017Renaissance Technologies LLCSell-296,800137,612$5,828
Q2 2017Renaissance Technologies LLCBuy4,060434,412$16,573
Q1 2017Renaissance Technologies LLCBuy128,952430,352$12,437
Q4 2016Renaissance Technologies LLCBuy24,500301,400$7,987
Q3 2016Renaissance Technologies LLCSell-85,300276,900$6,726
Q2 2016Renaissance Technologies LLCSell-124,700362,200$7,182
Q1 2016Renaissance Technologies LLCSell-41,000486,900$9,003

Frequently asked questions about MMSI activity

  • Which institutional owners are buying MMSI?

    Institutional owners buying MMSI 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 MMSI activity?

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

  • Is institutional interest in MMSI increasing?

    Institutional interest in MMSI 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.