Fastenal Company
MX ˙ BMV ˙ US3119001044
SecurityMX:FAST / Fastenal Company
InstitutionCi Investments Inc.
Latest Disclosed Ownership14,809 shares
Latest Disclosed Value $ 687,138
Ci Investments Inc. ownership in FAST / Fastenal Company

On May 13, 2026 - Ci Investments Inc. filed a 13F-HR form disclosing ownership of 14,809 shares of Fastenal Company (MX:FAST) valued at $687,138 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 12, 2026 disclosing 13,509 shares of Fastenal Company. This represents a change in shares of 9.62% during the quarter.

Ci Investments Inc. has a history of taking positions in derivatives of the underlying security (FAST) in the form of stock options.

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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Institutional Put/Call Ratios
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In addition to reporting standard equity and debt issues, institutions with more than 100MM assets under management must also disclose their put and call option holdings. Since put options generally indicate negative sentiment, and call options indicate positive sentiment, we can get a sense of the overall institutional sentiment by plotting the ratio of puts to calls. The chart to the right plots the historical put/call ratio for this instrument.

Using Put/Call Ratio as an indicator of investor sentiment overcomes one of the key deficiencies of using total institutional ownership, which is that a significant amount of assets under management are invested passively to track indices. Passively-managed funds do not typically buy options, so the put/call ratio indicator more closely tracks the sentiment of actively-managed funds.

MX:FAST / Fastenal Company Historical Put/Call Ratio
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)
2026-05-13 2026-03-31 13F FASTENAL COM 311900104 14,809 1,300 9.62 687 26.75 0.0023
2026-02-12 2025-12-31 13F FASTENAL COM 311900104 13,509 -24,797 -64.73 542 54,100.00 0.0024
2025-11-12 2025-09-30 13F FASTENAL COM 311900104 38,306 -1,454 -3.66 2 0.00 0.0068
2025-08-12 2025-06-30 13F FASTENAL COM 311900104 39,760 20,615 107.68 2 0.00 0.0063
2025-05-13 2025-03-31 13F FASTENAL COM 311900104 19,145 1,903 11.04 1 0.00 0.0063
2025-02-12 2024-12-31 13F FASTENAL COM 311900104 17,242 3,142 22.28 1 0.00 0.0047
2024-11-12 2024-09-30 13F FASTENAL COM 311900104 14,100 1,454 11.50 1 0.0038
2024-08-12 2024-06-30 13F FASTENAL COM 311900104 12,646 -7 -0.06 1 0.0031
2024-05-13 2024-03-31 13F FASTENAL COM 311900104 12,653 1,538 13.84 1 0.0039
2024-02-12 2023-12-31 13F FASTENAL COM 311900104 11,115 673 6.45 1 0.0037
2023-11-13 2023-09-30 13F FASTENAL COM 311900104 10,442 309 3.05 1 0.0032
2023-08-11 2023-06-30 13F FASTENAL COM 311900104 10,133 216 2.18 1 0.0030
2023-05-12 2023-03-31 13F FASTENAL COM 311900104 9,917 -323 -3.15 1 0.0027
2023-02-10 2022-12-31 13F FASTENAL COM 311900104 10,240 1,636 19.01 0 -100.00 0.0025
2022-11-14 2022-09-30 13F FASTENAL COM 311900104 8,604 594 7.42 396 -1.00 0.0021
2022-08-12 2022-06-30 13F FASTENAL COM 311900104 8,010 -3,204 -28.57 400 -39.94 0.0019
2022-05-12 2022-03-31 13F FASTENAL COM 311900104 11,214 -4,834 -30.12 666 -35.21 0.0025
2022-02-11 2021-12-31 13F FASTENAL COM 311900104 16,048 -43 -0.27 1,028 23.86 0.0035
2021-11-12 2021-09-30 13F FASTENAL COM 311900104 16,091 -235 -1.44 830 -2.24 0.0031
2021-08-13 2021-06-30 13F FASTENAL COM 311900104 16,326 -4,605 -22.00 849 -19.30 0.0031
2021-05-13 2021-03-31 13F FASTENAL COM 311900104 20,931 -2,911 -12.21 1,052 -9.62 0.0044
2021-02-09 2020-12-31 13F FASTENAL COM 311900104 23,842 7,421 45.19 1,164 57.30 0.0051
2020-11-09 2020-09-30 13F FASTENAL COM 311900104 16,421 4,606 38.98 740 46.25 0.0037
2020-08-07 2020-06-30 13F FASTENAL COM 311900104 11,815 11,815 506 0.0027
Disclosed Put Options
File
Date
Effective
Date
Form Security Class ID Opt Avg Share Price Shares ΔShares
(%)
Value
(x1000)
ΔValue
(%)
Prior Allocation
(%)
Allocation
(%)
ΔAllocation
(%)
Cost Basis
(x1000)
Profit
(x1000)
Return
(%)
2021-11-12 2021-09-30 13F FASTENAL OPTIONS Put 0 -100.00 0 n/a n/a n/a
2021-08-13 2021-06-30 13F FASTENAL OPTIONS Put 36 0 n/a n/a n/a
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.