Fastenal Company
US ˙ NasdaqGS ˙ US3119001044

SecurityFAST / Fastenal Company
InstitutionChicago Capital, LLC
Latest Disclosed Ownership276,741 shares
Latest Disclosed Value $ 12,840,769
Chicago Capital, LLC reports 0.03% decrease in ownership of FAST / Fastenal Company

On April 23, 2026 - Chicago Capital, LLC filed a 13F-HR form disclosing ownership of 276,741 shares of Fastenal Company (US:FAST) valued at $12,840,782 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 26, 2026 disclosing 276,827 shares of Fastenal Company. This represents a change in shares of -0.03% during the quarter. The current value of the position is $12,857,387 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)
2026-04-23 2026-03-31 13F FASTENAL COM 311900104 276,741 -86 -0.03 12,841 15.58 0.3462
2026-01-26 2025-12-31 13F FASTENAL COM 311900104 276,827 -2,664 -0.95 11,109 -18.95 0.2744
2025-10-22 2025-09-30 13F FASTENAL COM 311900104 279,491 -2,170 -0.77 13,706 15.87 0.3373
2025-07-17 2025-06-30 13F FASTENAL COM 311900104 281,661 136,662 94.25 11,830 5.20 0.2919
2025-04-17 2025-03-31 13F FASTENAL COM 311900104 144,999 -981 -0.67 11,245 7.12 0.3176
2025-01-24 2024-12-31 13F FASTENAL COM 311900104 145,980 -2,676 -1.80 10,497 -1.12 0.2783
2024-10-18 2024-09-30 13F FASTENAL COM 311900104 148,656 -675 -0.45 10,617 13.14 0.2948
2024-08-06 2024-06-30 13F FASTENAL COM 311900104 149,331 -1,408 -0.93 9,384 -19.31 0.2790
2024-04-15 2024-03-31 13F FASTENAL COM 311900104 150,739 -789 -0.52 11,628 18.48 0.3543
2024-01-22 2023-12-31 13F FASTENAL COM 311900104 151,528 -3,662 -2.36 9,814 15.74 0.3534
2023-10-25 2023-09-30 13F FASTENAL COM 311900104 155,190 -4,024 -2.53 8,480 -9.72 0.3966
2023-07-20 2023-06-30 13F FASTENAL COM 311900104 159,214 -1,572 -0.98 9,392 8.30 0.4234
2023-04-18 2023-03-31 13F FASTENAL COM 311900104 160,786 610 0.38 8,673 14.42 0.4315
2023-01-20 2022-12-31 13F FASTENAL COM 311900104 160,176 -1,464 -0.91 7,580 1.84 0.4193
2022-10-14 2022-09-30 13F FASTENAL COM 311900104 161,640 -2,388 -1.46 7,442 -9.11 0.4304
2022-07-21 2022-06-30 13F FASTENAL COM 311900104 164,028 -1,692 -1.02 8,188 -16.82 0.4523
2022-04-21 2022-03-31 13F FASTENAL COM 311900104 165,720 -60,053 -26.60 9,844 -31.94 0.4237
2022-01-20 2021-12-31 13F FASTENAL COM 311900104 225,773 -5,042 -2.18 14,463 21.42 0.5386
2021-10-28 2021-09-30 13F FASTENAL COM 311900104 230,815 -603 -0.26 11,912 -1.01 0.4518
2021-07-22 2021-06-30 13F FASTENAL COM 311900104 231,418 -204,518 -46.91 12,034 -45.10 0.4703
2021-04-13 2021-03-31 13F FASTENAL COM 311900104 435,936 -46,303 -9.60 21,919 -6.92 0.9251
2021-01-25 2020-12-31 13F FASTENAL COM 311900104 482,239 -13,437 -2.71 23,548 5.36 1.0519
2020-10-13 2020-09-30 13F FASTENAL COM 311900104 495,676 -13,197 -2.59 22,350 2.52 1.1491
2020-07-29 2020-06-30 13F FASTENAL COM 311900104 508,873 -17,960 -3.41 21,800 32.41 1.2633
2020-04-21 2020-03-31 13F FASTENAL COM 311900104 526,833 -72,849 -12.15 16,464 -25.70 1.3277
2020-01-14 2019-12-31 13F FASTENAL COM 311900104 599,682 -5,948 -0.98 22,158 11.99 1.3519
2019-10-28 2019-09-30 13F FASTENAL COMMON 311900104 605,630 -1,816 -0.30 19,786 -0.06 1.3252
2019-07-11 2019-06-30 13F FASTENAL COMMON 311900104 607,446 228,059 60.11 19,797 -18.86 1.2664
2019-04-23 2019-03-31 13F FASTENAL COMMON 311900104 379,387 -1,005 -0.26 24,398 22.66 1.6584
2019-02-11 2018-12-31 13F FASTENAL COM 311900104 380,392 -2,830 -0.74 19,891 -10.54 1.6220
2018-11-02 2018-09-30 13F FASTENAL COM 311900104 383,222 45,362 13.43 22,235 36.74 1.5382
2018-07-19 2018-06-30 13F FASTENAL COM 311900104 337,860 119,571 54.78 16,261 36.46 1.3110
2018-05-09 2018-03-31 13F Fastenal COM 311900104 218,289 218,289 11,916 1.5900
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.