FASTENAL CO (FAST) Stock Institutional Trading Activity


FASTENAL CO (FAST) 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, Cantillon Capital Management, Mairs & Power Growth Fund, Sequoia Financial Advisors, and Meritage Group. 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 2023Sequoia Financial AdvisorsBuy4,04710,516$681,147
Q4 2023Mairs & Power Growth FundSell-43,2963,190,597$206,654,987
Q4 2023Cantillon Capital ManagementSell-131,0915,416,305$350,814,075
Q3 2023Renaissance Technologies LLCSell-699,817487,888$26,658
Q3 2023Matrix Private Capital GroupSell-15,420$296,149
Q3 2023Sequoia Financial AdvisorsBuy1016,469$353,445
Q3 2023Mairs & Power Growth FundSell-17,4413,233,893$176,699,930
Q3 2023Cantillon Capital ManagementSell-21,5985,547,396$303,109,718
Q2 2023Matrix Private Capital GroupSell-35,421$319,785
Q2 2023Sequoia Financial AdvisorsBuy2766,368$375,676
Q2 2023Mairs & Power Growth FundBuy44,6553,251,334$191,796,210
Q2 2023Cantillon Capital ManagementBuy332,8255,568,994$328,514,956
Q1 2023Renaissance Technologies LLCBuy126,4171,187,705$64,065
Q1 2023Matrix Private Capital GroupBuy15,424$292,571
Q1 2023Sequoia Financial AdvisorsBuy6536,092$328,618
Q1 2023Giverny CapitalSell-7508,954$482,979
Q1 2023Mairs & Power Growth FundBuy243,2203,206,679$172,968,282
Q1 2023Cantillon Capital ManagementSell-87,0465,236,169$282,438,956
Q4 2022Renaissance Technologies LLCBuy929,7881,061,288$50,220
Q4 2022Matrix Private Capital GroupSell-245,423$256,616
Q4 2022Sequoia Financial AdvisorsBuy1,3815,439$257,379
Q4 2022Mairs & Power Growth FundSell-22,9102,963,459$140,230,894
Q4 2022Cantillon Capital ManagementSell-86,0345,323,215$251,894,534
Q3 2022Matrix Private Capital GroupSell-3195,447$251
Q3 2022Mairs & Power Growth FundSell-28,2562,986,369$137,492
Q3 2022Cantillon Capital ManagementSell-57,0245,409,249$249,042
Q2 2022Matrix Private Capital GroupBuy3095,766$288
Q2 2022Renaissance Technologies LLCSell-1,900131,500$6,564
Q2 2022Mairs & Power Growth FundSell-223,9033,014,625$150,490
Q2 2022Cantillon Capital ManagementSell-13,2935,466,273$272,876

Frequently asked questions about FAST activity

  • Which institutional owners are buying FAST?

    Institutional owners buying FAST 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 FAST activity?

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

  • Is institutional interest in FAST increasing?

    Institutional interest in FAST 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.