Fastenal Company
US ˙ NasdaqGS ˙ US3119001044

SecurityFAST / Fastenal Company
InstitutionClaro Advisors LLC
Latest Disclosed Ownership6,101 shares
Latest Disclosed Value $ 283,101
Claro Advisors LLC reports 1.85% increase in ownership of FAST / Fastenal Company

On April 21, 2026 - Claro Advisors LLC filed a 13F-HR form disclosing ownership of 6,101 shares of Fastenal Company (US:FAST) valued at $283,086 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 5,990 shares of Fastenal Company. This represents a change in shares of 1.85% during the quarter. The current value of the position is $283,452 USD.

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)
2026-04-21 2026-03-31 13F FASTENAL COM 311900104 6,101 111 1.85 283 17.92 0.0341
2026-02-17 2025-12-31 13F FASTENAL COM 311900104 5,990 22 0.37 240 -17.81 0.0327
2025-11-12 2025-09-30 13F FASTENAL COM 311900104 5,968 23 0.39 293 17.27 0.0427
2025-08-05 2025-06-30 13F FASTENAL COM 311900104 5,945 2,070 53.42 250 -17.00 0.0412
2025-05-12 2025-03-31 13F FASTENAL COM 311900104 3,875 103 2.73 301 10.70 0.0402
2025-01-13 2024-12-31 13F FASTENAL COM 311900104 3,772 43 1.15 271 1.88 0.0367
2024-11-07 2024-09-30 13F/A-1 FASTENAL COM 311900104 3,729 -51 -1.35 266 12.24 0.0344
2024-10-17 2024-09-30 13F FASTENAL COM 311900104 6,960 3,180 915 0.1182
2024-07-31 2024-06-30 13F FASTENAL COM 311900104 3,780 -299 -7.33 238 -24.52 0.0371
2024-04-18 2024-03-31 13F FASTENAL COM 311900104 4,079 11 0.27 315 19.39 0.0546
2024-01-22 2023-12-31 13F FASTENAL COM 311900104 4,068 -138 -3.28 263 14.85 0.0571
2023-10-10 2023-09-30 13F FASTENAL COM 311900104 4,206 27 0.65 230 -6.91 0.0574
2023-08-08 2023-06-30 13F FASTENAL COM 311900104 4,179 156 3.88 247 13.89 0.0612
2023-04-17 2023-03-31 13F FASTENAL COM 311900104 4,023 4,023 217 0.0637
2023-03-10 2022-12-31 13F/A-1 FASTENAL COM 311900104 0 -4,375 -100.00 0 -100.00
2023-02-14 2022-12-31 13F FASTENAL COM 311900104 0 -4,375 0
2022-11-18 2022-09-30 13F/A-1 FASTENAL COM 311900104 4,375 0 0.00 218 0.00 0.0867
2022-11-14 2022-09-30 13F FASTENAL COM 311900104 4,375 0 218 0.0867
2022-08-12 2022-06-30 13F FASTENAL COM 311900104 4,375 156 3.70 218 -19.26 0.0867
2022-05-16 2022-03-31 13F FASTENAL COM 311900104 4,219 0 0.00 270 0.00 0.0971
2022-02-14 2021-12-31 13F FASTENAL COM 311900104 4,219 35 0.84 270 25.00 0.0971
2021-11-15 2021-09-30 13F FASTENAL COM 311900104 4,184 58 1.41 216 0.47 0.0908
2021-08-13 2021-06-30 13F FASTENAL COM 311900104 4,126 25 0.61 215 4.37 0.0968
2021-05-17 2021-03-31 13F FASTENAL COM 311900104 4,101 -609 -12.93 206 -10.43 0.1044
2021-02-12 2020-12-31 13F FASTENAL COM 311900104 4,710 -117 -2.42 230 5.50 0.1222
2020-11-16 2020-09-30 13F FASTENAL COM 311900104 4,827 -484 -9.11 218 -4.39 0.1382
2020-08-14 2020-06-30 13F FASTENAL COM 311900104 5,311 5,311 228 0.1569
2020-05-15 2020-03-31 13F FASTENAL COM 311900104 0 -5,707 -100.00 0 -100.00
2020-02-14 2019-12-31 13F FASTENAL COM 311900104 5,707 5,707 211 0.1624
2019-05-09 2019-03-31 13F FASTENAL COM 311900104 0 -3,260 -100.00 0 -100.00
2019-02-14 2018-12-31 13F FASTENAL COM 311900104 3,260 3,260 189 0.1513
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.