Fastenal Company
MX ˙ BMV ˙ US3119001044
SecurityMX:FAST / Fastenal Company
InstitutionBoston Research & Management Inc
Latest Disclosed Ownership201,370 shares
Latest Disclosed Value $ 9,343
Boston Research & Management Inc reports 0.74% decrease in ownership of FAST / Fastenal Company

On April 10, 2026 - Boston Research & Management Inc filed a 13F-HR form disclosing ownership of 201,370 shares of Fastenal Company (MX:FAST) valued at $9,343 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 11, 2026 disclosing 202,870 shares of Fastenal Company. This represents a change in shares of -0.74% 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)
2026-04-10 2026-03-31 13F Fastenal COM 311900104 201,370 -1,500 -0.74 9 12.50 2.2193
2026-02-11 2025-12-31 13F Fastenal COM 311900104 202,870 -6,847 -3.26 8 -20.00 1.8772
2025-11-12 2025-09-30 13F Fastenal COM 311900104 209,717 -1,548 -0.73 10 25.00 2.2683
2025-08-12 2025-06-30 13F Fastenal COM 311900104 211,265 104,588 98.04 9 0.00 2.1208
2025-05-12 2025-03-31 13F Fastenal COM 311900104 106,677 -978 -0.91 8 14.29 2.0542
2025-02-12 2024-12-31 13F Fastenal COM 311900104 107,655 -195 -0.18 8 0.00 1.9002
2024-11-12 2024-09-30 13F Fastenal COM 311900104 107,850 1,920 1.81 8 16.67 1.8094
2024-08-13 2024-06-30 13F Fastenal COM 311900104 105,930 -345 -0.32 7 -25.00 1.6831
2024-05-14 2024-03-31 13F Fastenal COM 311900104 106,275 -33,095 -23.75 8 -11.11 2.0263
2024-02-12 2023-12-31 13F Fastenal COM 311900104 139,370 -8,567 -5.79 9 12.50 2.3963
2023-11-13 2023-09-30 13F Fastenal COM 311900104 147,937 440 0.30 8 0.00 2.3891
2023-08-01 2023-06-30 13F Fastenal COM 311900104 147,497 103 0.07 9 14.29 2.4634
2023-05-10 2023-03-31 13F Fastenal COM 311900104 147,394 1,685 1.16 8 16.67 2.3744
2023-02-13 2022-12-31 13F Fastenal COM 311900104 145,709 425 0.29 7 -99.91 2.1332
2022-11-14 2022-09-30 13F Fastenal COM 311900104 145,284 610 0.42 6,688 -7.39 2.2785
2022-08-11 2022-06-30 13F Fastenal COM 311900104 144,674 -5 -0.00 7,222 -15.95 2.3392
2022-05-12 2022-03-31 13F Fastenal COM 311900104 144,679 -5,271 -3.52 8,593 -10.54 2.4946
2022-02-10 2021-12-31 13F Fastenal COM 311900104 149,950 -1,645 -1.09 9,605 22.78 2.6225
2021-11-10 2021-09-30 13F/A-1 Fastenal COM 311900104 151,595 -1,025 -0.67 7,823 -1.42 2.3297
2021-11-10 2021-09-30 13F Fastenal COM 311900104 154,795 2,175 7,783 2.5053
2021-08-11 2021-06-30 13F Fastenal COM 311900104 152,620 -2,175 -1.41 7,936 1.97 2.4072
2021-05-11 2021-03-31 13F Fastenal COM 311900104 154,795 1,460 0.95 7,783 3.95 2.5053
2021-02-09 2020-12-31 13F Fastenal COM 311900104 153,335 -2,420 -1.55 7,487 6.62 2.6047
2020-11-09 2020-09-30 13F Fastenal COM 311900104 155,755 -5,324 -3.31 7,022 1.77 2.7460
2020-08-10 2020-06-30 13F Fastenal COM 311900104 161,079 -151 -0.09 6,900 36.96 2.8668
2020-05-08 2020-03-31 13F Fastenal COM 311900104 161,230 -5,161 -3.10 5,038 -18.05 2.5294
2020-02-07 2019-12-31 13F Fastenal COM 311900104 166,391 -4,070 -2.39 6,148 10.42 2.3063
2019-11-12 2019-09-30 13F Fastenal COM 311900104 170,461 6,735 4.11 5,568 4.37 2.2018
2019-08-07 2019-06-30 13F Fastenal COM 311900104 163,726 80,748 97.31 5,335 -0.02 2.1578
2019-05-07 2019-03-31 13F Fastenal COM 311900104 82,978 -3,710 -4.28 5,336 17.74 2.2233
2019-02-06 2018-12-31 13F Fastenal COM 311900104 86,688 10,840 14.29 4,532 3.00 2.1579
2018-11-13 2018-09-30 13F Fastenal COM 311900104 75,848 170 0.22 4,400 20.81 2.0105
2018-07-30 2018-06-30 13F Fastenal COM 311900104 75,678 1,010 1.35 3,642 -10.65 1.7923
2018-05-09 2018-03-31 13F Fastenal COM 311900104 74,668 -730 -0.97 4,076 -1.14 2.0769
2018-02-09 2017-12-31 13F Fastenal COM 311900104 75,398 -2,035 -2.63 4,123 16.83 2.0675
2017-11-09 2017-09-30 13F Fastenal COM 311900104 77,433 7,424 10.60 3,529 15.82 1.8034
2017-08-08 2017-06-30 13F Fastenal COM 311900104 70,009 -20 -0.03 3,047 -15.50 1.6484
2017-05-05 2017-03-31 13F Fastenal COM 311900104 70,029 -1,255 -1.76 3,606 7.71 1.9645
2017-02-09 2016-12-31 13F Fastenal COM 311900104 71,284 -10 -0.01 3,348 12.42 1.9047
2016-11-07 2016-09-30 13F Fastenal COM 311900104 71,294 3,724 5.51 2,978 -0.70 1.7203
2016-08-10 2016-06-30 13F Fastenal COM 311900104 67,570 1,200 1.81 2,999 -7.78 1.8183
2016-05-13 2016-03-31 13F Fastenal COM 311900104 66,370 7,185 12.14 3,252 34.66 2.0250
2016-02-11 2015-12-31 13F Fastenal COM 311900104 59,185 -17,290 -22.61 2,415 -13.72 1.5016
2015-11-09 2015-09-30 13F Fastenal COM 311900104 76,475 2,670 3.62 2,799 -10.09 1.8425
2015-07-31 2015-06-30 13F Fastenal COM 311900104 73,805 -1,100 -1.47 3,113 0.32 1.9705
2015-05-11 2015-03-31 13F Fastenal COM 311900104 74,905 16,360 27.94 3,103 11.46 1.9681
2015-02-11 2014-12-31 13F Fastenal COM 311900104 58,545 4,015 7.36 2,784 13.73 1.7449
2014-11-04 2014-09-30 13F Fastenal COM 311900104 54,530 46,110 547.62 2,448 488.46 1.6460
2014-08-12 2014-06-30 13F Fastenal COM 311900104 8,420 0 0.00 416 0.24 0.2875
2014-05-13 2014-03-31 13F Fastenal COM 311900104 8,420 3,160 60.08 415 66.67 0.3051
2014-02-07 2013-12-31 13F Fastenal COM 311900104 5,260 0 0.00 249 -5.68 0.1914
2013-11-08 2013-09-30 13F Fastenal COM 311900104 5,260 0 0.00 264 10.00 0.2230
2013-08-13 2013-06-30 13F/A-1 Fastenal COM 311900104 5,260 5,260 240 0.2134
2013-08-12 2013-06-30 13F Fastenal COM 311900104 5,260 240 0.2172
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.