Fastenal Company
MX ˙ BMV ˙ US3119001044
SecurityMX:FAST / Fastenal Company
InstitutionVestmark Advisory Solutions, Inc.
Latest Disclosed Ownership91,312 shares
Latest Disclosed Value $ 4,236,901
Vestmark Advisory Solutions, Inc. reports 14.52% increase in ownership of FAST / Fastenal Company

On May 15, 2026 - Vestmark Advisory Solutions, Inc. filed a 13F-HR form disclosing ownership of 91,312 shares of Fastenal Company (MX:FAST) valued at $4,236,901 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 6, 2026 disclosing 79,733 shares of Fastenal Company. This represents a change in shares of 14.52% 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)
2026-05-15 2026-03-31 13F FASTENAL COM 311900104 91,312 11,579 14.52 4,237 32.42 0.0291
2026-02-06 2025-12-31 13F FASTENAL COM 311900104 79,733 -1,292 -1.59 3,200 -19.48 0.0432
2025-11-10 2025-09-30 13F FASTENAL COM 311900104 81,025 -4,782 -5.57 3,973 10.27 0.0757
2025-08-06 2025-06-30 13F FASTENAL COM 311900104 85,807 5,143 6.38 3,604 -42.40 0.0520
2025-05-13 2025-03-31 13F FASTENAL COM 311900104 80,664 40,912 102.92 6,255 118.86 0.1611
2025-02-06 2024-12-31 13F FASTENAL COM 311900104 39,752 958 2.47 2,859 3.18 0.0984
2024-11-14 2024-09-30 13F FASTENAL COM 311900104 38,794 882 2.33 2,771 16.29 0.1031
2024-08-12 2024-06-30 13F FASTENAL COM 311900104 37,912 -4,298 -10.18 2,382 -26.84 0.0995
2024-05-15 2024-03-31 13F FASTENAL COM 311900104 42,210 1,529 3.76 3,256 23.61 0.1402
2024-02-06 2023-12-31 13F FASTENAL COM 311900104 40,681 603 1.50 2,635 20.33 0.1339
2023-11-06 2023-09-30 13F FASTENAL COM 311900104 40,078 -23,443 -36.91 2,190 -41.58 0.1592
2023-08-07 2023-06-30 13F FASTENAL COM 311900104 63,521 5,513 9.50 3,747 19.79 0.1427
2023-05-09 2023-03-31 13F FASTENAL COM 311900104 58,008 845 1.48 3,129 15.68 0.1355
2023-01-20 2022-12-31 13F FASTENAL COM 311900104 57,163 -3,417 -5.64 2,705 -3.05 0.1318
2022-11-03 2022-09-30 13F FASTENAL COM 311900104 60,580 14,339 31.01 2,789 20.79 0.1555
2022-08-04 2022-06-30 13F FASTENAL COM 311900104 46,241 16,169 53.77 2,309 29.28 0.1319
2022-04-27 2022-03-31 13F FASTENAL COM 311900104 30,072 842 2.88 1,786 -4.59 0.1011
2022-01-31 2021-12-31 13F FASTENAL COM 311900104 29,230 1,945 7.13 1,872 32.95 0.1056
2021-11-15 2021-09-30 13F FASTENAL COM 311900104 27,285 1,481 5.74 1,408 4.92 0.0954
2021-08-09 2021-06-30 13F FASTENAL COM 311900104 25,804 644 2.56 1,342 6.09 0.0955
2021-05-10 2021-03-31 13F FASTENAL COM 311900104 25,160 2,695 12.00 1,265 15.31 0.1122
2021-02-04 2020-12-31 13F FASTENAL COM 311900104 22,465 2,381 11.86 1,097 21.08 0.1231
2020-10-19 2020-09-30 13F FASTENAL COM 311900104 20,084 4,259 26.91 906 33.63 0.1217
2020-08-13 2020-06-30 13F FASTENAL COM 311900104 15,825 1,152 7.85 678 47.71 0.1049
2020-05-06 2020-03-31 13F FASTENAL COM 311900104 14,673 -6,014 -29.07 459 -39.92 0.0897
2020-02-14 2019-12-31 13F FASTENAL COM 311900104 20,687 -961 -4.44 764 8.06 0.1568
2019-11-05 2019-09-30 13F FASTENAL COM 311900104 21,648 -2,036 -8.60 707 -8.42 0.1146
2019-08-20 2019-06-30 13F FASTENAL COM 311900104 23,684 12,532 112.37 772 7.67 0.1321
2019-05-14 2019-03-31 13F FASTENAL COM 311900104 11,152 11,152 717 0.1278
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.