IRADIMED CORP (IRMD) Stock Institutional Trading Activity


IRADIMED CORP (IRMD) 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, Sequoia Financial Advisors, and Bares Capital Management. 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
Q2 2021Renaissance Technologies LLCSell-21,302702,312$20,655
Q1 2021Renaissance Technologies LLCSell-14,543723,614$18,648
Q4 2020Renaissance Technologies LLCBuy13,600738,157$16,830
Q3 2020Renaissance Technologies LLCBuy38,200724,557$15,491
Q2 2020Renaissance Technologies LLCBuy60,200686,357$15,930
Q1 2020Renaissance Technologies LLCBuy91,789626,157$13,368
Q4 2019Renaissance Technologies LLCBuy117,268534,368$12,494
Q3 2019Renaissance Technologies LLCBuy53,700417,100$8,767
Q2 2019Renaissance Technologies LLCBuy17,200363,400$7,432
Q1 2019Renaissance Technologies LLCBuy25,700346,200$9,725
Q4 2018Renaissance Technologies LLCBuy121,800320,500$7,839
Q3 2018Renaissance Technologies LLCBuy145,242198,700$7,382
Q1 2018Renaissance Technologies LLCBuy5,68853,458$770
Q4 2017Renaissance Technologies LLCBuy31,87047,770$724
Q3 2017Renaissance Technologies LLCSell-2,71815,900$153
Q1 2017Renaissance Technologies LLCSell-7,68218,618$166
Q4 2016Renaissance Technologies LLCSell-19,60026,300$292
Q3 2016Renaissance Technologies LLCBuy45,90045,900$780

Frequently asked questions about IRMD activity

  • Which institutional owners are buying IRMD?

    Institutional owners buying IRMD 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 IRMD activity?

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

  • Is institutional interest in IRMD increasing?

    Institutional interest in IRMD 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.