FASTENAL CO (FAST) Institutional Ownership Changes & 13F Activity

FASTENAL CO (FAST) institutional ownership data tracks hedge funds, asset managers, and other institutional investors based on recent SEC 13F filings (Q1 2026). This page analyzes institutional buying and selling activity, new holdings, and sold-out positions among tracked filers. Notable filers include Cantillon Capital Management, Mairs & Power Growth Fund, Sequoia Financial Advisors, Renaissance Technologies LLC, and Meritage Group.

Portfolio quarterNameTypeQuantityRemainingReported stock balance
Q1 2019Wedgewood PartnersSell-319,6041,221,189$78,534
Q1 2019Bares Capital ManagementSell-289,7884,462,114$286,959
Q1 2019Mairs & Power Growth FundSell-138,7682,799,884$180,061
Q1 2019Turtle Creek Asset ManagementSell-137,700353,550$22,737
Q1 2019Cantillon Capital ManagementSell-10,8573,230,525$207,756
Q4 2018Cantillon Capital ManagementBuy242,6473,241,382$169,491
Q4 2018Bares Capital ManagementBuy192,6314,751,902$248,477
Q4 2018Wedgewood PartnersBuy119,1851,540,793$80,567
Q4 2018Turtle Creek Asset ManagementBuy16,850491,250$25,687
Q4 2018Mairs & Power Growth FundBuy6,0942,938,652$153,662
Q3 2018Renaissance Technologies LLCSell-685,800231,844$13,452
Q3 2018Bares Capital ManagementBuy657,0734,559,271$264,529
Q3 2018Cantillon Capital ManagementSell-202,4712,998,735$173,987
Q3 2018Wedgewood PartnersSell-141,3491,421,608$82,481
Q3 2018Turtle Creek Asset ManagementSell-121,850474,400$27,525
Q3 2018Mairs & Power Growth FundSell-11,3172,932,558$170,147
Q2 2018Cantillon Capital ManagementBuy3,201,2063,201,206$154,074
Q2 2018Wedgewood PartnersSell-856,6791,562,957$75,224
Q2 2018Bares Capital ManagementBuy161,3053,902,198$187,813
Q2 2018Turtle Creek Asset ManagementBuy155,350596,250$28,698
Q2 2018Mairs & Power Growth FundSell-58,3292,943,875$141,689
Q2 2018Sequoia FundBuy1,2315,026$242
Q1 2018Wedgewood PartnersSell-335,9092,419,636$132,087
Q1 2018Mairs & Power Growth FundBuy24,0683,002,204$163,890
Q1 2018Bares Capital ManagementBuy7,5093,740,893$204,215
Q1 2018Sequoia FundBuy3,7953,795$202
Q1 2018Turtle Creek Asset ManagementBuy1,300440,900$24,069
Q4 2017Wedgewood PartnersSell-948,8502,755,545$150,700
Q4 2017Mairs & Power Growth FundBuy107,0482,978,136$162,874
Q4 2017Bares Capital ManagementBuy70,4693,733,384$204,179

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.

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