Fastenal Company
MX ˙ BMV ˙ US3119001044
SecurityMX:FAST / Fastenal Company
InstitutionBnp Paribas Arbitrage, Sa
Latest Disclosed Ownership2,650,710 shares
Latest Disclosed Value $ 122,992,944
Bnp Paribas Arbitrage, Sa ownership in FAST / Fastenal Company

On May 12, 2026 - Bnp Paribas Arbitrage, Sa filed a 13F-HR form disclosing ownership of 2,650,710 shares of Fastenal Company (MX:FAST) valued at $122,992,944 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 10, 2026 disclosing 2,856,836 shares of Fastenal Company. This represents a change in shares of -7.22% during the quarter.

Bnp Paribas Arbitrage, Sa 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 480 of underlying shares valued at $2,227,200 USD and put options representing 1,809 of underlying shares valued at $8,393,760 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)
2026-05-12 2026-03-31 13F Fastenal Equity 311900104 2,650,710 -206,126 -7.22 122,993 7.28 0.0061
2026-02-10 2025-12-31 13F Fastenal Equity 311900104 2,856,836 833,926 41.22 114,645 15.57 0.0519
2025-11-13 2025-09-30 13F Fastenal Equity 311900104 2,022,910 -469,245 -18.83 99,204 -5.22 0.0530
2025-08-14 2025-06-30 13F Fastenal Equity 311900104 2,492,155 1,249,232 100.51 104,671 8.59 0.0600
2025-05-14 2025-03-31 13F Fastenal Equity 311900104 1,242,923 60,922 5.15 96,389 13.40 0.0567
2025-02-14 2024-12-31 13F Fastenal Equity 311900104 1,182,001 3,928 0.33 84,998 1.02 0.0476
2024-11-13 2024-09-30 13F Fastenal Equity 311900104 1,178,073 -100,918 -7.89 84,138 4.69 0.0565
2024-08-13 2024-06-30 13F Fastenal Equity 311900104 1,278,991 447,925 53.90 80,372 25.37 0.0655
2024-05-01 2024-03-31 13F Fastenal Equity 311900104 831,066 329,850 65.81 64,108 97.48 0.0563
2024-02-14 2023-12-31 13F/A-2 Fastenal Equity 311900104 501,216 283,597 130.32 32,464 173.03 0.0369
2024-02-07 2023-12-31 13F/A-1 Fastenal Equity 311900104 501,216 283,597 32,464 0.0046
2024-02-07 2023-12-31 13F Fastenal Equity 311900104 501,216 32,464
2023-11-14 2023-09-30 13F Fastenal Equity 311900104 217,619 -207,597 -48.82 11,891 -52.60 0.0153
2023-08-09 2023-06-30 13F Fastenal Equity 311900104 425,216 80,834 23.47 25,083 35.04 0.0314
2023-05-12 2023-03-31 13F FASTENAL EQUITY 311900104 344,382 -245,848 -41.65 18,576 -33.49 0.0260
2023-02-14 2022-12-31 13F Fastenal Equity 311900104 590,230 17,934 3.13 27,930 6.00 0.0429
2022-11-16 2022-09-30 13F/A-1 Fastenal Equity 311900104 572,296 308,525 116.97 26,349 100.11 0.0422
2022-11-15 2022-09-30 13F Fastenal Equity 311900104 572,296 308,525 26,349 0.0063
2022-08-12 2022-06-30 13F Fastenal Equity 311900104 263,771 5,261 2.04 13,167 -14.25 0.0206
2022-05-18 2022-03-31 13F/A-1 Fastenal Equity 311900104 258,510 -217,130 -45.65 15,355 -49.60 0.0206
2022-02-09 2021-12-31 13F FASTENAL EQUITY 311900104 475,640 331,131 229.14 30,469 308.54 0.0434
2021-11-16 2021-09-30 13F/A-1 FASTENAL EQUITY 311900104 144,509 -193,268 -57.22 7,458 -57.54 0.0106
2021-11-12 2021-09-30 13F FASTENAL EQUITY 311900104 665,516 327,739 30,008 0.0000
2021-08-10 2021-06-30 13F FASTENAL EQUITY 311900104 337,777 40,663 13.69 17,564 17.58 0.0232
2021-05-07 2021-03-31 13F FASTENAL EQUITY 311900104 297,114 137,644 86.31 14,939 91.86 0.0219
2021-02-10 2020-12-31 13F FASTENAL EQUITY 311900104 159,470 -506,046 -76.04 7,787 -74.05 0.0145
2020-10-30 2020-09-30 13F FASTENAL EQUITY 311900104 665,516 -63,035 -8.65 30,008 -3.85 0.0429
2020-08-06 2020-06-30 13F FASTENAL EQUITY 311900104 728,551 424,472 139.59 31,211 228.47 0.0551
2020-05-13 2020-03-31 13F FASTENAL EQUITY 311900104 304,079 -70,240 -18.76 9,502 -31.30 0.0195
2020-02-12 2019-12-31 13F FASTENAL EQUITY 311900104 374,319 165,452 79.21 13,831 102.71 0.0252
2019-11-07 2019-09-30 13F FASTENAL EQUITY 311900104 208,867 -4,576 -2.14 6,824 -1.91 0.0121
2019-07-30 2019-06-30 13F FASTENAL EQUITY 311900104 213,443 129,023 152.83 6,956 28.13 0.0139
2019-04-25 2019-03-31 13F FASTENAL EQUITY 311900104 84,420 32,373 62.20 5,429 99.52 0.0117
2019-02-12 2018-12-31 13F FASTENAL EQUITY 311900104 52,047 -238,887 -82.11 2,722 -83.88 0.0064
2018-11-07 2018-09-30 13F FASTENAL EQUITY 311900104 290,934 22,499 8.38 16,880 30.65 0.0249
2018-07-25 2018-06-30 13F FASTENAL EQUITY 311900104 268,435 71,783 36.50 12,920 20.34 0.0215
2018-05-11 2018-03-31 13F FASTENAL EQUITY 311900104 196,652 38,614 24.43 10,735 24.20 0.0201
2018-03-05 2017-12-31 13F/A-1 FASTENAL EQUITY 311900104 158,038 64,784 69.47 8,643 103.36 0.0153
2018-02-01 2017-12-31 13F FASTENAL EQUITY 311900104 158,038 64,784 8,643
2017-11-03 2017-09-30 13F FASTENAL STOCK 311900104 93,254 55,561 147.40 4,251 159.15 0.0104
2017-08-03 2017-06-30 13F FASTENAL STOCK 311900104 37,693 -211,811 -84.89 1,641 -87.24 0.0049
2017-05-03 2017-03-31 13F FASTENAL STOCK 311900104 249,504 169,617 212.32 12,849 242.37 0.0339
2017-02-14 2016-12-31 13F FASTENAL STOCK 311900104 79,887 -41,339 -34.10 3,753 -25.89 0.0176
2016-10-05 2016-09-30 13F * FASTENAL CO COM STOCK 311900104 121,226 100,963 498.26 5,065 463.29 0.0208
2016-07-06 2016-06-30 13F * FASTENAL CO COM STOCK 311900104 20,263 -45,757 -69.31 899 -72.20 0.0041
2016-04-22 2016-03-31 13F * FASTENAL CO COM STOCK 311900104 66,020 9,010 15.80 3,235 38.98 0.0137
2016-04-19 2015-12-31 13F/A-1 * FASTENAL CO COM STOCK 311900104 57,010 23,815 71.74 2,327 91.52 0.0113
2016-02-10 2015-12-31 13F * FASTENAL CO COM STOCK 311900104 57,010 2,327
2015-11-13 2015-09-30 13F * FASTENAL CO COM STOCK 311900104 33,195 -42,019 -55.87 1,215 -61.70 0.0030
2015-08-14 2015-06-30 13F FASTENAL CO COM STOCK 311900104 75,214 -157,022 -67.61 3,173 -67.04 0.0089
2015-05-15 2015-03-31 13F * FASTENAL CO COM STOCK 311900104 232,236 -39,474 -14.53 9,624 -25.53 0.0266
2015-03-10 2014-12-31 13F/A-1 * FASTENAL CO COM STOCK 311900104 271,710 -11,161 -3.95 12,923 1.75 0.0458
2015-02-11 2014-12-31 13F * FASTENAL CO COM STOCK 311900104 271,710 12,923
2014-11-12 2014-09-30 13F * FASTENAL CO COM STOCK 311900104 282,871 119,977 73.65 12,701 57.55 0.0110
2014-08-14 2014-06-30 13F/A-1 * FASTENAL CO COM STOCK 311900104 162,894 -139,398 -46.11 8,062 -46.75 0.0076
2014-08-14 2014-06-30 13F FASTENAL CO COM STOCK 311900104 162,894 8,062
2014-05-13 2014-03-31 13F FASTENAL STOCK 311900104 302,292 -200,331 -39.86 15,139 -36.61 0.0118
2014-04-02 2013-12-31 13F/A-1 FASTENAL STOCK 311900104 502,623 6,293 1.27 23,880 -4.29 0.0174
2014-02-12 2013-12-31 13F FASTENAL STOCK 311900104 502,623 23,880
2013-11-13 2013-09-30 13F FASTENAL STOCK 311900104 496,330 291,284 142.06 24,950 165.40 0.0181
2013-08-13 2013-06-30 13F FASTENAL STOCK 311900104 205,046 205,046 9,401 0.0066
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
(%)
2026-05-12 2026-03-31 13F Fastenal Option Call 480 -68.63 2,227 -63.72 n/a n/a n/a
2026-02-10 2025-12-31 13F Fastenal Option Call 1,530 0.00 6,140 -18.18 n/a n/a n/a
2025-11-13 2025-09-30 13F Fastenal Option Call 1,530 306.91 7,503 375.17 n/a n/a n/a
2025-08-14 2025-06-30 13F Fastenal Option Call 376 100.00 1,579 8.37 n/a n/a n/a
2025-05-14 2025-03-31 13F Fastenal Option Call 188 1,458 n/a n/a n/a
2018-05-11 2018-03-31 13F FASTENAL OPTION Call 0 -100.00 0 -100.00 n/a n/a n/a
2018-03-05 2017-12-31 13F/A FASTENAL OPTION Call 1,500 9,900.00 82 84,472.16 n/a n/a n/a
2018-02-01 2017-12-31 13F FASTENAL OPTION Call 1,500 82 n/a n/a n/a
2017-11-03 2017-09-30 13F FASTENAL OPTION Call 15 -97.93 0 -100.00 n/a n/a n/a
2017-08-03 2017-06-30 13F FASTENAL OPTION Call 726 4,740.00 35 1,600.00 n/a n/a n/a
2017-05-03 2017-03-31 13F FASTENAL OPTION Call 15 -97.39 2 -99.54 n/a n/a n/a
2017-02-14 2016-12-31 13F FASTENAL OPTION Call 575 437 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
(%)
2026-05-12 2026-03-31 13F Fastenal Option Put 1,809 -51.84 8,394 -44.31 n/a n/a n/a
2026-02-10 2025-12-31 13F Fastenal Option Put 3,756 11.92 15,073 -8.42 n/a n/a n/a
2025-11-13 2025-09-30 13F Fastenal Option Put 3,356 127.37 16,458 165.48 n/a n/a n/a
2025-08-14 2025-06-30 13F Fastenal Option Put 1,476 100.00 6,199 8.32 n/a n/a n/a
2025-05-14 2025-03-31 13F Fastenal Option Put 738 5,723 n/a n/a n/a
2017-11-03 2017-09-30 13F FASTENAL OPTION Put 0 -100.00 0 -100.00 n/a n/a n/a
2017-08-03 2017-06-30 13F FASTENAL OPTION Put 50 3 n/a n/a n/a
2017-05-03 2017-03-31 13F FASTENAL OPTION Put 0 -100.00 0 -100.00 n/a n/a n/a
2017-02-14 2016-12-31 13F FASTENAL OPTION Put 715 2 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.