Fastenal Company
MX ˙ BMV ˙ US3119001044
SecurityMX:FAST / Fastenal Company
InstitutionNorthern Trust Corp
Latest Disclosed Ownership13,768,837 shares
Latest Disclosed Value $ 638,874,037
Northern Trust Corp reports 2.21% increase in ownership of FAST / Fastenal Company

On May 14, 2026 - Northern Trust Corp filed a 13F-HR form disclosing ownership of 13,768,837 shares of Fastenal Company (MX:FAST) valued at $638,874,037 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 13,470,711 shares of Fastenal Company. This represents a change in shares of 2.21% 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)
2026-05-14 2026-03-31 13F FASTENAL COM 311900104 13,768,837 298,126 2.21 638,874 18.18 0.0173
2026-02-17 2025-12-31 13F FASTENAL COM 311900104 13,470,711 -385,780 -2.78 540,580 -20.45 0.0142
2025-11-14 2025-09-30 13F FASTENAL COM 311900104 13,856,491 -25,065 -0.18 679,522 16.55 0.0869
2025-08-13 2025-06-30 13F FASTENAL COM 311900104 13,881,556 6,760,790 94.94 583,025 5.58 0.0802
2025-05-13 2025-03-31 13F FASTENAL COM 311900104 7,120,766 -201,973 -2.76 552,215 4.87 0.0820
2025-02-14 2024-12-31 13F FASTENAL COM 311900104 7,322,739 966,629 15.21 526,578 16.00 0.0746
2024-11-13 2024-09-30 13F FASTENAL COM 311900104 6,356,110 -310,919 -4.66 453,953 8.35 0.0743
2024-08-14 2024-06-30 13F FASTENAL COM 311900104 6,667,029 -82,909 -1.23 418,956 -19.54 0.0706
2024-05-14 2024-03-31 13F FASTENAL COM 311900104 6,749,938 -299,678 -4.25 520,690 14.04 0.0900
2024-02-13 2023-12-31 13F FASTENAL COM 311900104 7,049,616 -394,882 -5.30 456,604 12.25 0.0826
2023-11-13 2023-09-30 13F FASTENAL COM 311900104 7,444,498 413,572 5.88 406,767 -1.93 0.0788
2023-08-11 2023-06-30 13F FASTENAL COM 311900104 7,030,926 66,949 0.96 414,754 10.41 0.0797
2023-05-15 2023-03-31 13F FASTENAL COM 311900104 6,963,977 57,524 0.83 375,637 14.94 0.0745
2023-02-13 2022-12-31 13F FASTENAL COM 311900104 6,906,453 -5,643 -0.08 326,813 2.70 0.0686
2022-11-14 2022-09-30 13F FASTENAL COM 311900104 6,912,096 -214,157 -3.01 318,232 -10.54 0.0727
2022-08-12 2022-06-30 13F FASTENAL COM 311900104 7,126,253 -376,131 -5.01 355,743 -20.17 0.0762
2022-05-13 2022-03-31 13F FASTENAL COM 311900104 7,502,384 41,898 0.56 445,642 -6.75 0.0784
2022-02-08 2021-12-31 13F FASTENAL COM 311900104 7,460,486 -127,698 -1.68 477,920 22.03 0.0783
2021-11-15 2021-09-30 13F FASTENAL COM 311900104 7,588,184 467,892 6.57 391,626 5.77 0.0693
2021-08-13 2021-06-30 13F FASTENAL COM 311900104 7,120,292 118,805 1.70 370,255 5.18 0.0652
2021-05-12 2021-03-31 13F FASTENAL COM 311900104 7,001,487 50,834 0.73 352,036 3.72 0.0655
2021-02-11 2020-12-31 13F FASTENAL COM 311900104 6,950,653 -113,091 -1.60 339,400 6.56 0.0661
2020-11-16 2020-09-30 13F FASTENAL COM 311900104 7,063,744 -97,811 -1.37 318,504 3.81 0.0698
2020-08-14 2020-06-30 13F FASTENAL COM 311900104 7,161,555 6,704 0.09 306,800 37.22 0.0727
2020-05-14 2020-03-31 13F FASTENAL COM 311900104 7,154,851 30,288 0.43 223,589 -15.07 0.0642
2020-02-14 2019-12-31 13F FASTENAL COM 311900104 7,124,563 -198,806 -2.71 263,254 10.03 0.0589
2019-11-13 2019-09-30 13F FASTENAL COM 311900104 7,323,369 -251,127 -3.32 239,254 -3.08 0.0573
2019-08-13 2019-06-30 13F FASTENAL COM 311900104 7,574,496 3,847,656 103.24 246,853 3.00 0.0586
2019-05-13 2019-03-31 13F FASTENAL COM 311900104 3,726,840 65,952 1.80 239,673 25.20 0.0592
2019-02-12 2018-12-31 13F FASTENAL COM 311900104 3,660,888 267,997 7.90 191,427 -2.76 0.0537
2018-11-14 2018-09-30 13F FASTENAL COM 311900104 3,392,891 -44,702 -1.30 196,855 18.98 0.0482
2018-09-18 2018-06-30 13F/A-1 FASTENAL COM 311900104 3,437,593 108,486 3.26 165,451 -8.96 0.0420
2018-08-14 2018-06-30 13F FASTENAL COM 311900104 3,456,411 127,304 166,357
2018-05-09 2018-03-31 13F FASTENAL COM 311900104 3,329,107 5,382 0.16 181,735 -0.02 0.0473
2018-02-14 2017-12-31 13F FASTENAL COM 311900104 3,323,725 -84,282 -2.47 181,774 17.02 0.0460
2017-11-13 2017-09-30 13F FASTENAL COM 311900104 3,408,007 -1,065,917 -23.83 155,337 -20.24 0.0405
2017-08-11 2017-06-30 13F FASTENAL COM 311900104 4,473,924 -58,839 -1.30 194,750 -16.57 0.0545
2017-05-12 2017-03-31 13F FASTENAL COM 311900104 4,532,763 36,174 0.80 233,437 10.50 0.0673
2017-02-13 2016-12-31 13F FASTENAL COM 311900104 4,496,589 -285,166 -5.96 211,250 5.74 0.0648
2016-11-09 2016-09-30 13F FASTENAL COM 311900104 4,781,755 -392,053 -7.58 199,782 -13.01 0.0622
2016-08-12 2016-06-30 13F FASTENAL COM 311900104 5,173,808 -24,862 -0.48 229,664 -7.51 0.0746
2016-08-19 2016-03-31 13F/A-1 FASTENAL COM 311900104 5,198,670 40,283 0.78 248,323 17.93 0.0824
2016-05-13 2016-03-31 13F Fastenal COMM 311900104 5,198,654 254,733
2016-02-12 2015-12-31 13F Fastenal COMM 311900104 5,158,387 -100,214 -1.91 210,565 9.37 0.0698
2015-11-12 2015-09-30 13F Fastenal COMM 311900104 5,258,601 534,054 11.30 192,518 -3.39 0.0642
2015-08-13 2015-06-30 13F FASTENAL COM 311900104 4,724,547 846,689 21.83 199,281 24.02 0.1351
2015-08-13 2015-06-30 13F Fastenal COMM 031190010 487,862 -3,389,996 20,578 0.0139
2015-05-14 2015-03-31 13F Fastenal COMM 311900104 3,877,858 1,972 0.05 160,679 -12.83 0.0483
2015-02-12 2014-12-31 13F Fastenal COM 311900104 3,875,886 -129,174 -3.23 184,338 2.51 0.0557
2014-11-13 2014-09-30 13F Fastenal COMM 311900104 4,005,060 412,445 11.48 179,827 1.14 0.0565
2014-08-14 2014-06-30 13F FASTENAL com 311900104 3,592,615 -515,009 -12.54 177,798 -12.20 0.0554
2014-05-14 2014-03-31 13F FASTENAL COMM 311900104 4,107,624 412,698 11.17 202,507 15.36 0.0637
2014-02-21 2013-12-31 13F/A-1 FASTENAL COM 311900104 3,694,926 43,407 1.19 175,545 -4.37 0.0563
2014-02-12 2013-12-31 13F FASTENAL COM 311900104 3,694,926 175,545
2013-11-13 2013-09-30 13F FASTENAL COM 311900104 3,651,519 -140,607 -3.71 183,562 5.71 0.0646
2013-08-09 2013-06-30 13F FASTENAL COM 311900104 3,792,126 3,792,126 173,641 0.0629
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.