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FAST · Fastenal Co · Holdings

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$50.75 +0.26 (+0.51%) At close · Oct 9
Market Cap
$58.24B
Shares
1.15B
Volume · Oct 9 5.23M Avg daily vol (3M) 7.41M

Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.

Some SEC filings for this period have not finished importing. Holder totals and changes may be incomplete; these filings remain queued for recovery.
The Sep 30, 2026 filing window is still open — showing the latest known positions. Funds that have not filed yet carry their prior-quarter positions; a fund that filed without this stock counts as sold out. Each fund's Change is measured against its own previous reported quarter, shown in the Reported column. Pick a completed quarter in the Quarter selector below to put every fund on one quarter and see the stock-wide activity breakdown.
Holders: 1,470
Total Value: $47,191,912,552
Total Shares: 982,331,369
Showing 1–100 of 1,505 holdings by value · page 1 of 16

Institutional Ownership Trend

27 quarters

Holder Concentration

Across 1,473 13F filers
Top Holder
10.8%
Sep 2023 → Jun 2026 · range 10.8% – 15.8%
of institutional value
Top 5
35.1%
Sep 2023 → Jun 2026 · range 35.0% – 40.9%
of institutional value
Top 10
48.7%
Sep 2023 → Jun 2026 · range 48.4% – 51.7%
of institutional value
HHI
340
Sep 2023 → Jun 2026 · range 337 – 485
Broadly held
Showing 100 of 1,505
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Holder Value (USD) % of 13F Shares Open
Key facts CIK 815556 CUSIP 311900104 13F (30d) 91 filings 77 filers Visit website Investor relations