13FAI ai-powered hedge fund tracker

FASTENAL CO (FAST) — Hedge Fund Ownership Q4 2025

FAST
Q4 2025Q3 2025Q2 2025Q1 2025
  • FASTENAL CO (FAST) is held by 2 of 82 tracked hedge funds, with Cantillon Capital Management (2%) and Mairs & Power (2%) holding the largest stakes, indicating limited hedge fund interest relative to peers.
  • The biggest increases in FAST holdings came from Cantillon Capital Management (+1%), highlighting conviction.
  • The biggest decreases in FAST holdings came from Mairs & Power (-1%), suggesting profit-taking or de-risking.
  • Overall, hedge funds increased exposure to FASTENAL CO (FAST) by +0.1% vs the prior quarter and +82% vs prior year.
# Fund % of Portfolio † Shares † Shares vs Prior Quarter † Shares vs Prior Year † Aggregate Value † Reported Price * Option
1
Cantillon Capital Management
William von Mueffling
2.01% 9.3M +0.76% +87.90% $371.9M $40.13
2
Mairs & Power
1.80% 4.7M -1.09% +72.27% $187.3M $40.13
2 Total 13.9M +0.13% +82.35% $559.2M
* Reported price is not an actual purchase or sale price. It is the price as of the last portfolio date.
† Portfolio value, share counts, and period-over-period changes exclude options positions (PUT/CALL), which are shown in the Option column for reference only.