Fastenal Company
MX ˙ BMV ˙ US3119001044
SecurityMX:FAST / Fastenal Company
InstitutionUBS Group AG
Latest Disclosed Ownership8,138,605 shares
Latest Disclosed Value $ 377,631,272
UBS Group AG ownership in FAST / Fastenal Company

On May 5, 2026 - UBS Group AG filed a 13F-HR form disclosing ownership of 8,138,605 shares of Fastenal Company (MX:FAST) valued at $377,631,272 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 29, 2026 disclosing 7,532,882 shares of Fastenal Company. This represents a change in shares of 8.04% during the quarter.

UBS Group AG has a history of taking positions in derivatives of the underlying security (FAST) in the form of stock options. The firm currently holds call options representing 0 of underlying shares valued at $0 USD and put options representing 400 of underlying shares valued at $18,560 USD .

Note: prior versions of this page mistakenly stated that the share values represented the number of options, not the number of underlying shares. For more information on the data backing these reports, please see the SEC document Frequently Asked Questions About Form 13F.

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)
2026-05-05 2026-03-31 13F FASTENAL COM 311900104 8,138,605 605,723 8.04 377,631 24.92 0.0567
2026-01-29 2025-12-31 13F FASTENAL COM 311900104 7,532,882 -781,323 -9.40 302,295 -25.86 0.0490
2025-11-13 2025-09-30 13F FASTENAL COM 311900104 8,314,205 -1,714,546 -17.10 407,729 -3.20 0.0639
2025-08-14 2025-06-30 13F FASTENAL COM 311900104 10,028,751 5,016,367 100.08 421,208 8.36 0.0729
2025-05-13 2025-03-31 13F FASTENAL COM 311900104 5,012,384 1,316,417 35.62 388,710 46.25 0.0715
2025-02-14 2024-12-31 13F FASTENAL COM 311900104 3,695,967 1,590,876 75.57 265,777 76.78 0.0491
2024-11-14 2024-09-30 13F FASTENAL COM 311900104 2,105,091 350,570 19.98 150,346 36.36 0.0328
2024-08-14 2024-06-30 13F FASTENAL COM 311900104 1,754,521 -44,463 -2.47 110,254 -20.55 0.0272
2024-05-13 2024-03-31 13F FASTENAL COM 311900104 1,798,984 714,397 65.87 138,774 97.55 0.0346
2024-02-09 2023-12-31 13F FASTENAL COM 311900104 1,084,587 273,228 33.68 70,249 58.46 0.0210
2023-11-09 2023-09-30 13F FASTENAL COM 311900104 811,359 -270,515 -25.00 44,333 -30.53 0.0153
2023-08-11 2023-06-30 13F FASTENAL COM 311900104 1,081,874 492,129 83.45 63,820 100.63 0.0216
2023-05-12 2023-03-31 13F FASTENAL COM 311900104 589,745 -80,890 -12.06 31,811 0.24 0.0116
2023-02-08 2022-12-31 13F FASTENAL COM 311900104 670,635 339,126 102.30 31,734 107.93 0.0118
2022-11-10 2022-09-30 13F FASTENAL COM 311900104 331,509 -225,707 -40.51 15,262 -45.13 0.0067
2022-08-10 2022-06-30 13F FASTENAL COM 311900104 557,216 -3,075 -0.55 27,816 -16.42 0.0114
2022-05-16 2022-03-31 13F FASTENAL COM 311900104 560,291 -349,580 -38.42 33,281 -42.90 0.0111
2022-02-14 2021-12-31 13F FASTENAL COM 311900104 909,871 111,618 13.98 58,287 41.48 0.0167
2021-11-15 2021-09-30 13F FASTENAL COM 311900104 798,253 160,179 25.10 41,198 24.17 0.0130
2021-08-13 2021-06-30 13F FASTENAL COM 311900104 638,074 -23,473 -3.55 33,180 -0.25 0.0107
2021-05-12 2021-03-31 13F FASTENAL COM 311900104 661,547 -167,421 -20.20 33,264 -17.82 0.0110
2021-02-11 2020-12-31 13F FASTENAL COM 311900104 828,968 410,375 98.04 40,478 114.46 0.0137
2020-11-12 2020-09-30 13F FASTENAL COM 311900104 418,593 -56,546 -11.90 18,874 -7.28 0.0071
2020-07-31 2020-06-30 13F FASTENAL COM 311900104 475,139 -78,421 -14.17 20,355 17.67 0.0086
2020-05-01 2020-03-31 13F FASTENAL COM 311900104 553,560 -404,218 -42.20 17,298 -51.12 0.0082
2020-02-14 2019-12-31 13F FASTENAL COM 311900104 957,778 424,323 79.54 35,390 103.06 0.0123
2019-11-14 2019-09-30 13F FASTENAL COM 311900104 533,455 -138,198 -20.58 17,428 -20.38 0.0067
2019-08-14 2019-06-30 13F FASTENAL COM 311900104 671,653 326,847 94.79 21,889 -1.29 0.0084
2019-05-14 2019-03-31 13F FASTENAL COM 311900104 344,806 -27,131 -7.29 22,175 14.01 0.0092
2019-02-14 2018-12-31 13F FASTENAL COM 311900104 371,937 -225,704 -37.77 19,450 -43.91 0.0088
2018-11-14 2018-09-30 13F FASTENAL COM 311900104 597,641 -129,784 -17.84 34,676 -0.96 0.0137
2018-08-14 2018-06-30 13F FASTENAL COM 311900104 727,425 9,673 1.35 35,011 -10.65 0.0152
2018-05-15 2018-03-31 13F FASTENAL COM 311900104 717,752 21,112 3.03 39,182 2.84 0.0169
2018-02-14 2017-12-31 13F FASTENAL COM 311900104 696,640 229,488 49.12 38,099 78.94 0.0157
2017-11-14 2017-09-30 13F FASTENAL COM 311900104 467,152 87,333 22.99 21,292 28.78 0.0098
2017-11-14 2017-06-30 13F/A-1 FASTENAL COM 311900104 379,819 119,468 45.89 16,534 23.31 0.0086
2017-08-14 2017-06-30 13F FASTENAL COM 311900104 379,819 16,534
2017-11-14 2017-03-31 13F/A-1 FASTENAL COM 311900104 260,351 4,453 1.74 13,408 11.53 0.0073
2017-05-12 2017-03-31 13F FASTENAL COM 311900104 260,351 4,453 13,408
2017-02-14 2016-12-31 13F FASTENAL COM 311900104 255,898 -317,077 -55.34 12,022 -49.78 0.0066
2016-11-14 2016-09-30 13F FASTENAL COM 311900104 572,975 277,299 93.78 23,939 82.41 0.0143
2016-08-12 2016-06-30 13F FASTENAL COM 311900104 295,676 -75,331 -20.30 13,124 -27.81 0.0082
2016-05-12 2016-03-31 13F FASTENAL COM 311900104 371,007 98,719 36.26 18,180 63.56 0.0122
2016-02-16 2015-12-31 13F FASTENAL COM 311900104 272,288 -69,511 -20.34 11,115 -11.17 0.0072
2015-11-13 2015-09-30 13F FASTENAL COM 311900104 341,799 -40,187 -10.52 12,513 -22.33 0.0089
2015-08-14 2015-06-30 13F FASTENAL COM 311900104 381,986 -213,063 -35.81 16,111 -34.66 0.0107
2015-05-14 2015-03-31 13F FASTENAL COM 311900104 595,049 320,096 116.42 24,656 88.54 0.0170
2015-02-17 2014-12-31 13F FASTENAL COM 311900104 274,953 274,953 13,077 0.0091
Disclosed Call 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
(%)
2024-05-13 2024-03-31 13F FASTENAL COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2024-02-09 2023-12-31 13F FASTENAL COM Call 150,000 9,716 n/a n/a n/a
2022-08-10 2022-06-30 13F FASTENAL COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2022-05-16 2022-03-31 13F FASTENAL COM Call 8,641 -49.52 513 -53.24 n/a n/a n/a
2022-02-14 2021-12-31 13F FASTENAL COM Call 17,118 0.00 1,097 24.24 n/a n/a n/a
2021-11-15 2021-09-30 13F FASTENAL COM Call 17,118 0.00 883 -0.79 n/a n/a n/a
2021-08-13 2021-06-30 13F FASTENAL COM Call 17,118 0.00 890 3.37 n/a n/a n/a
2021-05-12 2021-03-31 13F FASTENAL COM Call 17,118 861 n/a n/a n/a
2020-11-12 2020-09-30 13F FASTENAL COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2020-07-31 2020-06-30 13F FASTENAL COM Call 68,000 2,913 n/a n/a n/a
2019-08-14 2019-06-30 13F FASTENAL COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2019-05-14 2019-03-31 13F FASTENAL COM Call 3,400 219 n/a n/a n/a
2018-05-15 2018-03-31 13F FASTENAL COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2018-02-14 2017-12-31 13F FASTENAL COM Call 6,600 361 n/a n/a n/a
2017-11-14 2017-09-30 13F FASTENAL COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2017-11-14 2017-06-30 13F/A FASTENAL COM Call 10,100 440 n/a n/a n/a
2017-08-14 2017-06-30 13F FASTENAL COM Call 10,100 440 n/a n/a n/a
2017-02-14 2016-12-31 13F FASTENAL COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2016-11-14 2016-09-30 13F FASTENAL COM Call 121,700 238.06 5,085 218.21 n/a n/a n/a
2016-08-12 2016-06-30 13F FASTENAL COM Call 36,000 -47.67 1,598 -52.60 n/a n/a n/a
2016-05-12 2016-03-31 13F FASTENAL COM Call 68,800 1,174.07 3,371 1,432.27 n/a n/a n/a
2016-02-16 2015-12-31 13F FASTENAL COM Call 5,400 -88.96 220 -87.71 n/a n/a n/a
2015-11-13 2015-09-30 13F FASTENAL COM Call 48,900 1,790 n/a n/a n/a
2015-08-14 2015-06-30 13F FASTENAL COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2015-05-14 2015-03-31 13F FASTENAL COM Call 12,600 260.00 522 214.46 n/a n/a n/a
2015-02-17 2014-12-31 13F FASTENAL COM Call 3,500 166 n/a n/a n/a
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
(%)
2026-05-05 2026-03-31 13F FASTENAL COM Put 400 0.00 19 12.50 n/a n/a n/a
2026-01-29 2025-12-31 13F FASTENAL COM Put 400 0.00 16 -15.79 n/a n/a n/a
2025-11-13 2025-09-30 13F FASTENAL COM Put 400 0.00 20 18.75 n/a n/a n/a
2025-08-14 2025-06-30 13F FASTENAL COM Put 400 100.00 17 6.67 n/a n/a n/a
2025-05-13 2025-03-31 13F FASTENAL COM Put 200 16 n/a n/a n/a
2022-08-10 2022-06-30 13F FASTENAL COM Put 0 -100.00 0 -100.00 n/a n/a n/a
2022-05-16 2022-03-31 13F FASTENAL COM Put 17,281 -49.52 1,026 -53.21 n/a n/a n/a
2022-02-14 2021-12-31 13F FASTENAL COM Put 34,235 0.00 2,193 24.11 n/a n/a n/a
2021-11-15 2021-09-30 13F FASTENAL COM Put 34,235 0.00 1,767 -0.73 n/a n/a n/a
2021-08-13 2021-06-30 13F FASTENAL COM Put 34,235 0.00 1,780 3.43 n/a n/a n/a
2021-05-12 2021-03-31 13F FASTENAL COM Put 34,235 1,721 n/a n/a n/a
2020-07-31 2020-06-30 13F FASTENAL COM Put 0 -100.00 0 -100.00 n/a n/a n/a
2020-05-01 2020-03-31 13F FASTENAL COM Put 200 6 n/a n/a n/a
2020-02-14 2019-12-31 13F FASTENAL COM Put 0 -100.00 0 -100.00 n/a n/a n/a
2019-11-14 2019-09-30 13F FASTENAL COM Put 40,500 -82.36 1,323 -82.32 n/a n/a n/a
2019-08-14 2019-06-30 13F FASTENAL COM Put 229,600 7,483 n/a n/a n/a
2016-05-12 2016-03-31 13F FASTENAL COM Put 0 -100.00 0 -100.00 n/a n/a n/a
2016-02-16 2015-12-31 13F FASTENAL COM Put 100 0.00 4 0.00 n/a n/a n/a
2015-11-13 2015-09-30 13F FASTENAL COM Put 100 0.00 4 0.00 n/a n/a n/a
2015-08-14 2015-06-30 13F FASTENAL COM Put 100 -50.00 4 -50.00 n/a n/a n/a
2015-05-14 2015-03-31 13F FASTENAL COM Put 200 -86.67 8 -88.73 n/a n/a n/a
2015-02-17 2014-12-31 13F FASTENAL COM Put 1,500 71 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.