Fastenal Company
MX ˙ BMV ˙ US3119001044
SecurityMX:FAST / Fastenal Company
InstitutionJanus Henderson Group Plc
Latest Disclosed Ownership127,984 shares
Latest Disclosed Value $ 5,941,658
Janus Henderson Group Plc reports 5.09% decrease in ownership of FAST / Fastenal Company

On May 18, 2026 - Janus Henderson Group Plc filed a 13F-HR/A form disclosing ownership of 127,984 shares of Fastenal Company (MX:FAST) valued at $5,941,658 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 134,844 shares of Fastenal Company. This represents a change in shares of -5.09% during the quarter.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-05-18 2026-03-31 13F/A-1 FASTENAL COM 311900104 127,984 -6,860 -5.09 5,942 9.79 0.0010
2026-05-15 2026-03-31 13F FASTENAL COM 311900104 127,984 -6,860 5,942 0.0011
2026-02-17 2025-12-31 13F FASTENAL COM 311900104 134,844 380 0.28 5,412 -17.93 0.0024
2025-11-14 2025-09-30 13F FASTENAL COM 311900104 134,464 -6,700 -4.75 6,593 11.22 0.0030
2025-08-14 2025-06-30 13F FASTENAL COM 311900104 141,164 67,463 91.54 5,928 5.61 0.0029
2025-05-15 2025-03-31 13F FASTENAL COM 311900104 73,701 451 0.62 5,613 6.55 0.0031
2025-02-14 2024-12-31 13F FASTENAL COM 311900104 73,250 -359 -0.49 5,269 0.23 0.0027
2024-11-14 2024-09-30 13F FASTENAL COM 311900104 73,609 234 0.32 5,257 14.01 0.0027
2024-08-14 2024-06-30 13F FASTENAL COM 311900104 73,375 -3,864 -5.00 4,611 -22.63 0.0025
2024-05-15 2024-03-31 13F FASTENAL COM 311900104 77,239 -36,668 -32.19 5,959 -19.24 0.0033
2024-02-14 2023-12-31 13F FASTENAL COM 311900104 113,907 36,234 46.65 7,377 73.82 0.0044
2023-11-14 2023-09-30 13F FASTENAL COM 311900104 77,673 -99,089 -56.06 4,244 -59.29 0.0028
2023-08-14 2023-06-30 13F FASTENAL COM 311900104 176,762 86,154 95.08 10,427 113.39 0.0065
2023-05-15 2023-03-31 13F FASTENAL COM 311900104 90,608 -104,058 -53.45 4,886 -46.95 0.0032
2023-02-14 2022-12-31 13F FASTENAL COM 311900104 194,666 10,003 5.42 9,211 8.31 0.0066
2023-01-13 2022-09-30 13F/A-1 FASTENAL COM 311900104 184,663 43,821 31.11 8,503 20.92 0.0064
2022-11-14 2022-09-30 13F FASTENAL COM 311900104 184,663 43,821 8,503 0.0064
2022-08-15 2022-06-30 13F FASTENAL COM 311900104 140,842 -1,642,264 -92.10 7,032 -93.36 0.0048
2022-05-16 2022-03-31 13F FASTENAL COM 311900104 1,783,106 -1,200,454 -40.24 105,917 -44.58 0.0511
2022-02-14 2021-12-31 13F FASTENAL COM 311900104 2,983,560 -4,686,149 -61.10 191,128 -51.71 0.0797
2021-11-16 2021-09-30 13F FASTENAL COM 311900104 7,669,709 -427,564 -5.28 395,833 -5.99 0.1731
2021-08-16 2021-06-30 13F FASTENAL COM 311900104 8,097,273 633,216 8.48 421,057 12.19 0.1802
2021-05-17 2021-03-31 13F FASTENAL COM 311900104 7,464,057 403,177 5.71 375,293 8.85 0.1713
2021-02-16 2020-12-31 13F FASTENAL COM 311900104 7,060,880 25,911 0.37 344,781 8.69 0.1602
2020-11-16 2020-09-30 13F FASTENAL COM 311900104 7,034,969 916,148 14.97 317,206 21.01 0.1654
2020-08-14 2020-06-30 13F FASTENAL COM 311900104 6,118,821 697,595 12.87 262,127 54.73 0.1471
2020-05-14 2020-03-31 13F FASTENAL COM 311900104 5,421,226 -232,348 -4.11 169,411 -18.90 0.1166
2020-02-18 2019-12-31 13F FASTENAL COM 311900104 5,653,574 3,180,349 128.59 208,899 158.54 0.1070
2019-11-14 2019-09-30 13F FASTENAL COM 311900104 2,473,225 827,158 50.25 80,800 50.62 0.0438
2019-07-31 2019-06-30 13F FASTENAL COM 311900104 1,646,067 1,154,014 234.53 53,645 69.53 0.0292
2019-04-30 2019-03-31 13F FASTENAL COM 311900104 492,053 -27,395 -5.27 31,644 16.50 0.0175
2019-02-06 2018-12-31 13F FASTENAL COM 311900104 519,448 -1,857,241 -78.14 27,162 -80.30 0.0173
2018-11-09 2018-09-30 13F FASTENAL COM 311900104 2,376,689 -143,580 -5.70 137,895 13.68 0.0737
2018-08-10 2018-06-30 13F FASTENAL COM 311900104 2,520,269 373,989 17.42 121,301 3.53 0.0691
2018-05-14 2018-03-31 13F FASTENAL COM 311900104 2,146,280 -1,205,546 -35.97 117,165 -36.08 0.0690
2018-03-12 2017-12-31 13F/A-1 FASTENAL COM 311900104 3,351,826 462,398 16.00 183,312 39.19 0.1129
2018-02-09 2017-12-31 13F FASTENAL COM 311900104 3,351,826 462,398 183,312
2017-11-14 2017-09-30 13F FASTENAL COM 311900104 2,889,428 1,066,773 58.53 131,700 65.99 0.0844
2017-08-17 2017-06-30 13F/A-1 FASTENAL COM 311900104 1,822,655 1,423,856 357.04 79,340 286.31 0.0541
2017-08-14 2017-06-30 13F FASTENAL COM 311900104 1,822,655 1,423,856 79,340
2017-05-03 2017-03-31 13F FASTENAL COM 311900104 398,799 -44,531 -10.04 20,538 -1.39 0.1442
2017-01-30 2016-12-31 13F FASTENAL COM 311900104 443,330 -55,187 -11.07 20,828 0.00 0.1536
2016-10-24 2016-09-30 13F FASTENAL COM 311900104 498,517 -16,917 -3.28 20,828 -8.97 0.1535
2016-07-29 2016-06-30 13F FASTENAL COM 311900104 515,434 -69,702 -11.91 22,880 -20.20 0.1903
2016-05-12 2016-03-31 13F FASTENAL COM 311900104 585,136 -60,078 -9.31 28,671 8.86 0.2326
2016-02-03 2015-12-31 13F FASTENAL COM 311900104 645,214 54,889 9.30 26,338 8.28 0.2113
2015-11-16 2015-09-30 13F FASTENAL COM 311900104 590,325 -105,465 -15.16 24,324 -17.12 0.2143
2015-08-17 2015-06-30 13F FASTENAL COM 311900104 695,790 -9,996 -1.42 29,348 18.07 0.2306
2015-06-02 2015-03-31 13F/A-1 FASTENAL COM 311900104 705,786 134,796 23.61 24,857 -8.47 0.1918
2015-05-15 2015-03-31 13F FASTENAL COM 311900104 705,786 24,857
2015-02-12 2014-12-31 13F FASTENAL COM 311900104 570,990 531,537 1,347.27 27,156 1,432.51 0.1958
2014-11-12 2014-09-30 13F FASTENAL COM 311900104 39,453 0 0.00 1,772 -9.27 0.0167
2014-08-13 2014-06-30 13F FASTENAL COM 311900104 39,453 0 0.00 1,953 0.41 0.0182
2014-05-08 2014-03-31 13F FASTENAL COM 311900104 39,453 6,200 18.64 1,945 23.10 0.0189
2014-01-14 2013-12-31 13F FASTENAL COM 311900104 33,253 0 0.00 1,580 -5.45 0.0160
2013-11-12 2013-09-30 13F FASTENAL COM 311900104 33,253 -2,008 -5.69 1,671 3.34 0.0184
2013-08-15 2013-06-30 13F FASTENAL COM 311900104 35,261 35,261 1,617 0.0189
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.