AMG Funds LLC reported FASTENAL CO (FAST) in 16 quarterly 13F filings .
This page tracks quarterly shares, estimated market value, portfolio weight, filing dates, and disclosure-aligned stock prices directly from SEC EDGAR 13F filings. Older history is available after unlock; the visible window still shows the most recent pattern.
This page is designed to answer the real investor question behind a 13F filing: how meaningful was AMG Funds LLC's position in FASTENAL CO, and how did that conviction change over time? You can read the holding window, peak weight, latest reported size, disclosure timing, and quarter-by-quarter changes without piecing the story together from raw SEC rows.
See the most recent quarter where the fund disclosed this position.
Peak weight helps separate a token disclosure from a real conviction holding the fund genuinely cared about.
Longer holding windows often tell a very different story from short-lived tactical trades or one-quarter experiments.
Knowing that a fund owned a stock is useful. Knowing whether it was a 0.20% placeholder or a true high-conviction position is where the signal actually starts.
As of 2025 Q4 β sorted by position size
These are the practical questions this page is built to answer before you even open the full history table.
AMG Funds LLC reported FAST across 0 quarterly 13F filings.
This page shows the quarter-by-quarter portfolio weight history for FAST in AMG Funds LLC.
The most recent filing on this page is 2020 Q2, when AMG Funds LLC reported 6,363 shares, equal to 1.39% of portfolio, with an estimated market value of $273K.
The chart compares AMG Funds LLC's quarterly FAST portfolio weight with the stock's indexed share price, so you can see whether the fund was building, trimming, or holding the position as price moved.