Fastenal Company
MX ˙ BMV ˙ US3119001044
SecurityMX:FAST / Fastenal Company
Institution1832 Asset Management L.P.
Latest Disclosed Ownership5,028 shares
Latest Disclosed Value $ 233,299
1832 Asset Management L.P. reports 4.01% decrease in ownership of FAST / Fastenal Company

On May 14, 2026 - 1832 Asset Management L.P. filed a 13F-HR form disclosing ownership of 5,028 shares of Fastenal Company (MX:FAST) valued at $233,299 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 5,238 shares of Fastenal Company. This represents a change in shares of -4.01% 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 5,028 -210 -4.01 233 10.95 0.0002
2026-02-13 2025-12-31 13F FASTENAL COM 311900104 5,238 -40,474 -88.54 210 -90.63 0.0002
2025-11-14 2025-09-30 13F FASTENAL COM 311900104 45,712 -12,610 -21.62 2,242 -8.49 0.0018
2025-08-13 2025-06-30 13F FASTENAL COM 311900104 58,322 15,536 36.31 2,450 -26.19 0.0019
2025-05-14 2025-03-31 13F FASTENAL COM 311900104 42,786 543 1.29 3,318 9.25 0.0030
2025-02-14 2024-12-31 13F FASTENAL COM 311900104 42,243 -12,312 -22.57 3,038 -22.05 0.0026
2024-11-13 2024-09-30 13F FASTENAL COM 311900104 54,555 -5,499 -9.16 3,896 3.26 0.0030
2024-08-13 2024-06-30 13F FASTENAL COM 311900104 60,054 -1,162 -1.90 3,774 -20.10 0.0031
2024-05-14 2024-03-31 13F FASTENAL COM 311900104 61,216 7,418 13.79 4,722 35.53 0.0028
2024-02-13 2023-12-31 13F FASTENAL COM 311900104 53,798 -6,883 -11.34 3,484 5.10 0.0050
2023-11-13 2023-09-30 13F FASTENAL COM 311900104 60,681 8,706 16.75 3,316 8.12 0.0047
2023-08-14 2023-06-30 13F FASTENAL COM 311900104 51,975 2,740 5.57 3,066 15.48 0.0060
2023-05-12 2023-03-31 13F FASTENAL COM 311900104 49,235 263 0.54 2,656 14.59 0.0055
2023-02-15 2022-12-31 13F FASTENAL COM 311900104 48,972 195 0.40 2,317 3.16 0.0048
2022-11-14 2022-09-30 13F FASTENAL COM 311900104 48,777 -4,865 -9.07 2,246 -16.13 0.0048
2022-08-15 2022-06-30 13F FASTENAL COM 311900104 53,642 -797 -1.46 2,678 -16.02 0.0054
2022-05-16 2022-03-31 13F FASTENAL COM 311900104 54,439 54,257 29,811.54 3,189 28,890.91 0.0052
2022-02-15 2021-12-31 13F FASTENAL COM 311900104 182 -4,049 -95.70 11 -95.11 0.0000
2021-11-15 2021-09-30 13F FASTENAL COM 311900104 4,231 3,910 1,218.07 225 1,223.53 0.0004
2021-08-20 2021-06-30 13F/A-1 FASTENAL COM 311900104 321 139 76.37 17 88.89 0.0000
2021-08-16 2021-06-30 13F FASTENAL COM 311900104 321 139 17 0.0000
2021-05-17 2021-03-31 13F FASTENAL COM 311900104 182 0 0.00 9 0.00 0.0000
2021-02-16 2020-12-31 13F FASTENAL COM 311900104 182 -361,900 -99.95 9 -99.95 0.0000
2020-11-16 2020-09-30 13F FASTENAL COM 311900104 362,082 361,900 198,846.15 16,530 206,525.00 0.0432
2020-08-14 2020-06-30 13F FASTENAL COM 311900104 182 0 0.00 8 33.33 0.0000
2020-05-14 2020-03-31 13F FASTENAL COM 311900104 182 0 0.00 6 -14.29 0.0000
2020-02-14 2019-12-31 13F FASTENAL COM 311900104 182 -88 -32.59 7 16.67 0.0000
2019-11-14 2019-09-30 13F FASTENAL COM 311900104 270 88 48.35 6 0.00 0.0000
2019-08-14 2019-06-30 13F FASTENAL COM 311900104 182 91 100.00 6 0.00 0.0000
2019-05-15 2019-03-31 13F FASTENAL COM 311900104 91 0 0.00 6 20.00 0.0000
2019-02-14 2018-12-31 13F FASTENAL COM 311900104 91 0 0.00 5 0.00 0.0000
2018-11-14 2018-09-30 13F FASTENAL COM 311900104 91 0 0.00 5 0.00 0.0000
2018-08-14 2018-06-30 13F FASTENAL COM 311900104 91 91 5 0.0000
2016-08-12 2016-06-30 13F/A-1 FASTENAL COM 311900104 0 -670 -100.00 0 -100.00
2016-05-12 2016-03-31 13F FASTENAL COM 311900104 670 0 0.00 33 22.22 0.0001
2016-02-12 2015-12-31 13F FASTENAL COM 311900104 670 670 27 0.0001
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.