Fastenal Company
MX ˙ BMV ˙ US3119001044
SecurityMX:FAST / Fastenal Company
InstitutionAmalgamated Bank
Latest Disclosed Ownership236,740 shares
Latest Disclosed Value $ 10,985
Amalgamated Bank reports 2.51% decrease in ownership of FAST / Fastenal Company

On May 8, 2026 - Amalgamated Bank filed a 13F-HR form disclosing ownership of 236,740 shares of Fastenal Company (MX:FAST) valued at $10,985 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 5, 2026 disclosing 242,835 shares of Fastenal Company. This represents a change in shares of -2.51% 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)
2026-05-08 2026-03-31 13F FASTENAL COM 311900104 236,740 -6,095 -2.51 11 11.11 0.0841
2026-02-05 2025-12-31 13F FASTENAL COM 311900104 242,835 -28,044 -10.35 10 -30.77 0.0703
2025-10-29 2025-09-30 13F FASTENAL COM 311900104 270,879 1,597 0.59 13 18.18 0.0949
2025-08-04 2025-06-30 13F FASTENAL COM 311900104 269,282 139,198 107.01 11 10.00 0.0873
2025-04-25 2025-03-31 13F FASTENAL COM 311900104 130,084 985 0.76 10 11.11 0.0863
2025-02-04 2024-12-31 13F FASTENAL COM 311900104 129,099 2,028 1.60 9 0.00 0.0762
2024-10-30 2024-09-30 13F FASTENAL COM 311900104 127,071 5,132 4.21 9 28.57 0.0748
2024-08-12 2024-06-30 13F FASTENAL COM 311900104 121,939 -1,997 -1.61 8 -22.22 0.0653
2024-04-23 2024-03-31 13F FASTENAL COM 311900104 123,936 -25,364 -16.99 10 0.00 0.0818
2024-02-06 2023-12-31 13F FASTENAL COM 311900104 149,300 -3,617 -2.37 10 12.50 0.0771
2023-11-08 2023-09-30 13F FASTENAL COM 311900104 152,917 -11,330 -6.90 8 -11.11 0.0711
2023-08-11 2023-06-30 13F FASTENAL COM 311900104 164,247 2,486 1.54 10 12.50 0.0784
2023-05-02 2023-03-31 13F FASTENAL COM 311900104 161,761 4,364 2.77 9 14.29 0.0744
2023-02-10 2022-12-31 13F FASTENAL COM 311900104 157,397 -8,273 -4.99 7 -99.91 0.0664
2022-11-09 2022-09-30 13F FASTENAL COM 311900104 165,670 8,307 5.28 7,627 -2.91 0.0736
2022-08-15 2022-06-30 13F FASTENAL COM 311900104 157,363 -9,841 -5.89 7,856 -20.90 0.0732
2022-08-25 2022-03-31 13F/A-1 FASTENAL COM 311900104 167,204 5,321 3.29 9,932 -4.22 0.0772
2022-06-30 2022-03-31 13F FASTENAL COM 311900104 167,204 5,321 9,932 0.0789
2022-02-15 2021-12-31 13F/A-1 FASTENAL COM 311900104 161,883 28,981 21.81 10,370 51.19 0.0765
2022-02-15 2021-12-31 13F FASTENAL COM 311900104 161,883 28,981 10,370 0.0765
2021-10-29 2021-09-30 13F FASTENAL COM 311900104 132,902 -5,688 -4.10 6,859 -4.83 0.0579
2021-08-16 2021-06-30 13F FASTENAL COM 311900104 138,590 104,125 302.12 7,207 315.87 0.0578
2021-05-13 2021-03-31 13F FASTENAL COM 311900104 34,465 -1,571 -4.36 1,733 -1.53 0.0650
2021-02-12 2020-12-31 13F FASTENAL COM 311900104 36,036 -176 -0.49 1,760 7.78 0.0667
2020-10-30 2020-09-30 13F FASTENAL COM 311900104 36,212 -1,029 -2.76 1,633 2.38 0.0710
2020-08-10 2020-06-30 13F FASTENAL COM 311900104 37,241 -57,201 -60.57 1,595 -45.95 0.0738
2020-05-13 2020-03-31 13F FASTENAL COM 311900104 94,442 -3,187 -3.26 2,951 -18.19 0.0721
2020-02-13 2019-12-31 13F FASTENAL COM 311900104 97,629 4,619 4.97 3,607 18.69 0.0664
2019-11-13 2019-09-30 13F FASTENAL COM 311900104 93,010 16,673 21.84 3,039 22.15 0.0639
2019-08-14 2019-06-30 13F FASTENAL COM 311900104 76,337 33,213 77.02 2,488 -10.28 0.0581
2019-05-15 2019-03-31 13F FASTENAL COM 311900104 43,124 884 2.09 2,773 25.53 0.0672
2019-02-15 2018-12-31 13F FASTENAL COM 311900104 42,240 -1,196 -2.75 2,209 -12.34 0.0626
2018-11-14 2018-09-30 13F FASTENAL COM 311900104 43,436 -1,395 -3.11 2,520 16.77 0.0623
2018-07-18 2018-06-30 13F FASTENAL COM 311900104 44,831 2,515 5.94 2,158 -6.58 0.0527
2018-05-22 2018-03-31 13F FASTENAL COM 311900104 42,316 4,153 10.88 2,310 10.69 0.0613
2018-02-13 2017-12-31 13F FASTENAL COM 311900104 38,163 3,347 9.61 2,087 31.51 0.0565
2017-11-09 2017-09-30 13F FASTENAL COM 311900104 34,816 697 2.04 1,587 6.87 0.0494
2017-08-10 2017-06-30 13F FASTENAL COM 311900104 34,119 12,310 56.44 1,485 32.24 0.0487
2017-05-12 2017-03-31 13F FASTENAL COM 311900104 21,809 -9,368 -30.05 1,123 -23.34 0.0559
2017-02-14 2016-12-31 13F FASTENAL COM 311900104 31,177 5,430 21.09 1,465 36.15 0.0662
2016-11-15 2016-09-30 13F/A-1 FASTENAL COM 311900104 25,747 49 0.19 1,076 -3.58 0.0624
2016-11-14 2016-09-30 13F FASTENAL COM 311900104 7,508 314
2016-08-16 2016-06-30 13F FASTENAL COM 311900104 25,698 14,055 120.72 1,116 95.45 0.0646
2016-05-11 2016-03-31 13F FASTENAL COM 311900104 11,643 2,774 31.28 571 57.73 0.0556
2016-02-10 2015-12-31 13F FASTENAL COM 311900104 8,869 -2,266 -20.35 362 -11.27 0.0447
2015-11-04 2015-09-30 13F FASTENAL COM 311900104 11,135 520 4.90 408 -8.93 0.0428
2015-07-10 2015-06-30 13F FASTENAL COM 311900104 10,615 399 3.91 448 5.91 0.0440
2015-04-22 2015-03-31 13F FASTENAL COM 311900104 10,216 10,216 0.00 423 0.0516
2015-01-29 2014-12-31 13F FASTENAL COM 311900104 0 -8,966 -100.00 0 -100.00
2014-11-14 2014-09-30 13F FASTENAL COM 311900104 8,966 562 6.69 403 -3.12 0.0600
2014-08-11 2014-06-30 13F FASTENAL COM 311900104 8,404 875 11.62 416 12.13 0.0628
2014-05-12 2014-03-31 13F FASTENAL COM 311900104 7,529 -151 -1.97 371 1.64 0.0639
2014-02-13 2013-12-31 13F FASTENAL COM 311900104 7,680 7,680 0.88 365 -6.65 0.0620
2013-11-14 2013-09-30 13F FASTENAL COM 311900104 0 0 0 0.0000
2013-08-15 2013-06-30 13F FASTENAL COM 311900104 0 -7,613 -100.00 0 -100.00
2014-02-13 2013-03-31 13F FASTENAL COM 311900104 7,613 2,548 50.31 391 65.68 0.1109
2014-02-11 2012-12-31 13F FASTENAL COM 311900104 5,065 1,114 28.20 236 10.28 0.0983
2014-02-11 2012-03-31 13F FASTENAL COM 311900104 3,951 3,951 214 0.1486
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.