Landstar System, Inc.
US ˙ NasdaqGS ˙ US5150981018

SecurityLSTR / Landstar System, Inc.
InstitutionDimensional Fund Advisors Lp
Latest Disclosed Ownership683,119 shares
Latest Disclosed Value $ 109,506,494
Dimensional Fund Advisors Lp reports 2.37% increase in ownership of LSTR / Landstar System, Inc.

On May 7, 2026 - Dimensional Fund Advisors Lp filed a 13F-HR form disclosing ownership of 683,119 shares of Landstar System, Inc. (US:LSTR) valued at $109,510,807 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 12, 2026 disclosing 667,294 shares of Landstar System, Inc.. This represents a change in shares of 2.37% during the quarter. The current value of the position is $148,960,929 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)
2026-05-07 2026-03-31 13F LANDSTAR SYS COM 515098101 683,119 15,825 2.37 109,506 14.20 0.0049
2026-02-12 2025-12-31 13F LANDSTAR SYS COM 515098101 667,294 11,881 1.81 95,892 19.38 0.0201
2025-11-12 2025-09-30 13F LANDSTAR SYS COM 515098101 655,413 -30,615 -4.46 80,325 -15.78 0.0172
2025-08-12 2025-06-30 13F LANDSTAR SYS COM 515098101 686,028 34,561 5.31 95,374 -2.52 0.0221
2025-05-13 2025-03-31 13F LANDSTAR SYS COM 515098101 651,467 33,632 5.44 97,842 -7.86 0.0243
2025-02-13 2024-12-31 13F LANDSTAR SYS COM 515098101 617,835 9,190 1.51 106,184 -7.63 0.0255
2024-11-07 2024-09-30 13F LANDSTAR SYS COM 515098101 608,645 13,750 2.31 114,950 4.75 0.0279
2024-08-09 2024-06-30 13F LANDSTAR SYS COM 515098101 594,895 37,020 6.64 109,743 2.05 0.0287
2024-05-10 2024-03-31 13F LANDSTAR SYS COM 515098101 557,875 2,790 0.50 107,536 0.04 0.0291
2024-02-07 2023-12-31 13F LANDSTAR SYS COM 515098101 555,085 21,395 4.01 107,496 13.83 0.0314
2023-11-09 2023-09-30 13F LANDSTAR SYS COM 515098101 533,690 6,955 1.32 94,435 -6.89 0.0310
2023-08-09 2023-06-30 13F LANDSTAR SYS COM 515098101 526,735 -19,973 -3.65 101,420 3.49 0.0323
2023-05-12 2023-03-31 13F LANDSTAR SYS COM 515098101 546,708 -29,439 -5.11 97,996 105,270.97 0.0330
2023-02-09 2022-12-31 13F LANDSTAR SYS COM 515098101 576,147 -5,657 -0.97 94 -99.89 0.0277
2022-11-10 2022-09-30 13F LANDSTAR SYS COM 515098101 581,804 13,450 2.37 83,998 1.63 0.0322
2022-08-12 2022-06-30 13F LANDSTAR SYS COM 515098101 568,354 18,163 3.30 82,647 -0.42 0.0296
2022-05-13 2022-03-31 13F LANDSTAR SYS COM 515098101 550,191 15,356 2.87 82,994 -13.32 0.0256
2022-02-09 2021-12-31 13F LANDSTAR SYS COM 515098101 534,835 -514 -0.10 95,744 13.31 0.0289
2021-11-12 2021-09-30 13F LANDSTAR SYS COM 515098101 535,349 18,392 3.56 84,494 3.43 0.0272
2021-08-12 2021-06-30 13F LANDSTAR SYS COM 515098101 516,957 -16,462 -3.09 81,692 -7.23 0.0259
2021-05-14 2021-03-31 13F LANDSTAR SYS COM 515098101 533,419 -28,258 -5.03 88,054 16.42 0.0291
2021-03-08 2020-12-31 13F/A-2 LANDSTAR SYS COM 515098101 561,677 1,093 0.19 75,635 7.51 0.0273
2021-02-11 2020-12-31 13F LANDSTAR SYS COM 515098101 561,677 1,093 75,635 27,315.3418
2020-11-12 2020-09-30 13F LANDSTAR SYS COM 515098101 560,584 -10,013 -1.75 70,350 9.79 0.0298
2020-08-13 2020-06-30 13F LANDSTAR SYS COM 515098101 570,597 7,548 1.34 64,079 18.72 0.0282
2020-05-14 2020-03-31 13F LANDSTAR SYS COM 515098101 563,049 4,470 0.80 53,976 -15.14 0.0281
2020-02-14 2019-12-31 13F LANDSTAR SYS COM 515098101 558,579 4,781 0.86 63,604 2.02 0.0232
2019-11-12 2019-09-30 13F LANDSTAR SYS COM 515098101 553,798 436 0.08 62,347 4.34 0.0242
2019-08-13 2019-06-30 13F LANDSTAR SYS COM 515098101 553,362 -14,551 -2.56 59,754 -3.82 0.0232
2019-08-12 2019-03-31 13F/A-2 LANDSTAR SYS COM 515098101 567,913 11,640 2.09 62,125 16.73 0.0247
2019-05-10 2019-03-31 13F LANDSTAR SYS COM 515098101 567,913 11,640 62,125
2019-02-26 2018-12-31 13F/A-1 LANDSTAR SYS COM 515098101 556,273 30,488 5.80 53,219 -17.03 0.0241
2019-02-13 2018-12-31 13F LANDSTAR SYS COM 515098101 556,273 30,488 53,219
2018-11-13 2018-09-30 13F LANDSTAR SYS COM 515098101 525,785 -4,216 -0.80 64,145 10.83 0.0244
2018-08-10 2018-06-30 13F LANDSTAR SYS COM 515098101 530,001 -132,234 -19.97 57,877 -20.29 0.0231
2018-05-11 2018-03-31 13F LANDSTAR SYS COM 515098101 662,235 -41,872 -5.95 72,614 -0.94 0.0303
2018-02-12 2017-12-31 13F LANDSTAR SYS COM 515098101 704,107 -78,424 -10.02 73,300 -6.00 0.0304
2017-11-13 2017-09-30 13F LANDSTAR SYS COM 515098101 782,531 -59,895 -7.11 77,979 8.14 0.0341
2017-08-11 2017-06-30 13F LANDSTAR SYS COM 515098101 842,426 5,141 0.61 72,112 0.55 0.0333
2017-05-12 2017-03-31 13F LANDSTAR SYS COM 515098101 837,285 -12,223 -1.44 71,714 -1.03 0.0343
2017-02-09 2016-12-31 13F LANDSTAR SYS COM 515098101 849,508 -45,264 -5.06 72,464 18.96 0.0362
2016-11-10 2016-09-30 13F LANDSTAR SYS COM 515098101 894,772 11,100 1.26 60,915 0.40 0.0329
2016-08-09 2016-06-30 13F LANDSTAR SYS COM 515098101 883,672 7,980 0.91 60,672 7.23 0.0349
2016-05-13 2016-03-31 13F LANDSTAR SYS COM 515098101 875,692 24,065 2.83 56,579 13.28 0.0339
2016-02-10 2015-12-31 13F LANDSTAR SYS COM 515098101 851,627 67,916 8.67 49,948 0.41 0.0311
2015-11-13 2015-09-30 13F LANDSTAR SYS COM 515098101 783,711 66,019 9.20 49,746 3.65 0.0327
2015-08-14 2015-06-30 13F LANDSTAR SYS COM 515098101 717,692 33,634 4.92 47,992 5.82 0.0294
2015-05-14 2015-03-31 13F LANDSTAR SYS COM 515098101 684,058 71,148 11.61 45,352 2.02 0.0286
2015-02-06 2014-12-31 13F LANDSTAR SYS COM 515098101 612,910 9,225 1.53 44,456 2.01 0.0292
2014-11-13 2014-09-30 13F LANDSTAR SYS COM 515098101 603,685 28,649 4.98 43,580 18.42 0.0309
2014-08-08 2014-06-30 13F LANDSTAR SYS COM 515098101 575,036 82,902 16.85 36,802 26.29 0.0256
2014-05-14 2014-03-31 13F LANDSTAR SYS COM 515098101 492,134 188,546 62.11 29,142 67.09 0.0218
2014-02-12 2013-12-31 13F LANDSTAR SYS COM 515098101 303,588 183,981 153.82 17,441 160.51 0.0136
2013-11-13 2013-09-30 13F LANDSTAR SYS COM 515098101 119,607 604 0.51 6,695 9.25 0.0058
2013-08-15 2013-06-30 13F LANDSTAR SYS COM 515098101 119,003 119,003 6,128 0.0058
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.