(IRBT) Stock Institutional Trading Activity


(IRBT) position changes reported by tracked institutional filers across multiple SEC 13F reporting periods. Based on recent SEC 13F filings (Q3 2025), investors with some of the largest reported share count changes include Renaissance Technologies LLC, Disciplined Growth Investors, ARK Invest, Fairfax Financial Holdings, and Tiger Global Management. Explore insights into buying and selling patterns, position changes, and investment conviction levels to understand institutional trading behavior and market dynamics.

Explore more:

Portfolio quarterNameTypeQuantityRemainingReported stock balance
Q2 2020Disciplined Growth InvestorsSell-10,976319,991$26,847
Q1 2020Fairfax Financial HoldingsBuy4,50019,500$796
Q1 2020Disciplined Growth InvestorsSell-37,796330,967$13,537
Q4 2019Disciplined Growth InvestorsSell-841368,763$18,670
Q3 2019Disciplined Growth InvestorsBuy698369,604$22,793
Q2 2019Disciplined Growth InvestorsSell-3,034368,906$33,807
Q1 2019Disciplined Growth InvestorsBuy2,016371,940$43,774
Q4 2018Disciplined Growth InvestorsBuy5369,924$30,977
Q3 2018Disciplined Growth InvestorsSell-5,969369,919$40,661
Q2 2018Disciplined Growth InvestorsSell-395375,888$28,481
Q1 2018Fairfax Financial HoldingsBuy15,00015,000$963
Q1 2018Renaissance Technologies LLCSell-159,500182,600$11,721
Q1 2018Disciplined Growth InvestorsSell-725376,283$24,154
Q4 2017Disciplined Growth InvestorsBuy11,202377,008$28,917
Q3 2017Renaissance Technologies LLCBuy262,600342,100$26,362
Q3 2017Disciplined Growth InvestorsSell-17,725365,806$28,189
Q2 2017Renaissance Technologies LLCSell-164,80479,500$6,689
Q2 2017Disciplined Growth InvestorsSell-394383,531$32,270
Q1 2017Renaissance Technologies LLCBuy175,844244,304$16,158
Q1 2017Disciplined Growth InvestorsSell-900383,925$25,393
Q4 2016Disciplined Growth InvestorsBuy29,400384,825$22,493
Q3 2016Renaissance Technologies LLCBuy11,46068,460$3,011
Q3 2016Disciplined Growth InvestorsSell-6,325355,425$15,632
Q2 2016Renaissance Technologies LLCBuy28,90057,000$2,000
Q2 2016Disciplined Growth InvestorsSell-4,750361,750$12,690
Q1 2016Disciplined Growth InvestorsSell-450366,500$12,937
Q4 2015Renaissance Technologies LLCSell-157,97328,100$995
Q4 2015Disciplined Growth InvestorsSell-2,400366,950$12,990
Q3 2015Disciplined Growth InvestorsBuy4,550369,350$10,763
Q2 2015Disciplined Growth InvestorsBuy1,000364,800$11,630

Frequently asked questions about IRBT activity

  • Which institutional owners are buying IRBT?

    Institutional owners buying IRBT 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 IRBT activity?

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

  • Is institutional interest in IRBT increasing?

    Institutional interest in IRBT 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.