Fastenal Company
MX ˙ BMV ˙ US3119001044
SecurityMX:FAST / Fastenal Company
InstitutionEmerald Advisors, LLC
Latest Disclosed Ownership14,234 shares
Latest Disclosed Value $ 660,447
Emerald Advisors, LLC reports 3.99% increase in ownership of FAST / Fastenal Company

On April 23, 2026 - Emerald Advisors, LLC filed a 13F-HR form disclosing ownership of 14,234 shares of Fastenal Company (MX:FAST) valued at $660,447 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 27, 2026 disclosing 13,688 shares of Fastenal Company. This represents a change in shares of 3.99% 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)
2026-04-23 2026-03-31 13F FASTENAL COM 311900104 14,234 546 3.99 660 20.22 0.0818
2026-01-27 2025-12-31 13F FASTENAL COM 311900104 13,688 322 2.41 549 -16.18 0.0747
2025-10-29 2025-09-30 13F FASTENAL COM 311900104 13,366 554 4.32 655 21.75 0.0870
2025-07-17 2025-06-30 13F FASTENAL COM 311900104 12,812 6,496 102.85 538 10.02 0.0690
2025-04-25 2025-03-31 13F FASTENAL COM 311900104 6,316 465 7.95 490 16.43 0.0651
2025-02-03 2024-12-31 13F FASTENAL COM 311900104 5,851 247 4.41 421 -3.67 0.0580
2024-10-31 2024-09-30 13F FASTENAL COM 311900104 5,604 713 14.58 437 42.02 0.0632
2024-07-15 2024-06-30 13F FASTENAL COM 311900104 4,891 1,833 59.94 307 30.64 0.0467
2024-04-25 2024-03-31 13F FASTENAL COM 311900104 3,058 -51 -1.64 236 16.92 0.0420
2024-01-24 2023-12-31 13F FASTENAL COM 311900104 3,109 3,109 201 0.0384
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.