Landstar System, Inc.
US ˙ NasdaqGS ˙ US5150981018

SecurityLSTR / Landstar System, Inc.
InstitutionBoston Partners
Latest Disclosed Ownership1,420,213 shares
Latest Disclosed Value $ 227,764,001
Boston Partners reports 17.18% decrease in ownership of LSTR / Landstar System, Inc.

On May 11, 2026 - Boston Partners filed a 13F-HR form disclosing ownership of 1,420,213 shares of Landstar System, Inc. (US:LSTR) valued at $227,674,346 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 1,714,900 shares of Landstar System, Inc.. This represents a change in shares of -17.18% during the quarter. The current value of the position is $305,700,848 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)
2026-05-11 2026-03-31 13F LANDSTAR SYS COM 515098101 1,420,213 -294,687 -17.18 227,764 -7.69 0.1019
2026-02-13 2025-12-31 13F LANDSTAR SYS COM 515098101 1,714,900 -46,626 -2.65 246,746 14.11 0.2555
2025-11-13 2025-09-30 13F LANDSTAR SYS COM 515098101 1,761,526 341,808 24.08 216,242 9.59 0.2220
2025-08-12 2025-06-30 13F/A-1 LANDSTAR SYS COM 515098101 1,419,718 176,601 14.21 197,310 5.71 0.2191
2025-08-07 2025-06-30 13F LANDSTAR SYS COM 515098101 1,418,274 175,157 197,109 0.2203
2025-05-13 2025-03-31 13F LANDSTAR SYS COM 515098101 1,243,117 -220,751 -15.08 186,655 -25.82 0.2257
2025-02-11 2024-12-31 13F LANDSTAR SYS COM 515098101 1,463,868 -118,287 -7.48 251,610 -15.79 0.3060
2024-11-12 2024-09-30 13F LANDSTAR SYS COM 515098101 1,582,155 18,539 1.19 298,791 3.59 0.3526
2024-08-14 2024-06-30 13F LANDSTAR SYS COM 515098101 1,563,616 -22,670 -1.43 288,432 -5.64 0.3583
2024-05-28 2024-03-31 13F/A-1 LANDSTAR SYS COM 515098101 1,586,286 15,424 0.98 305,671 0.47 0.3641
2024-05-13 2024-03-31 13F LANDSTAR SYS COM 515098101 1,586,286 15,424 305,671 0.1513
2024-02-07 2023-12-31 13F LANDSTAR SYS COM 515098101 1,570,862 -47,161 -2.91 304,226 6.29 0.4029
2023-11-08 2023-09-30 13F LANDSTAR SYS COM 515098101 1,618,023 -17,070 -1.04 286,224 -9.10 0.3963
2023-08-10 2023-06-30 13F LANDSTAR SYS COM 515098101 1,635,093 -47,710 -2.84 314,863 4.38 0.4238
2023-05-09 2023-03-31 13F LANDSTAR SYS COM 515098101 1,682,803 25,872 1.56 301,655 11.64 0.4147
2023-02-08 2022-12-31 13F LANDSTAR SYS COM 515098101 1,656,931 -7,957 -0.48 270,209 12.33 0.3655
2022-11-09 2022-09-30 13F LANDSTAR SYS COM 515098101 1,664,888 368,802 28.46 240,541 27.52 0.3520
2022-08-10 2022-06-30 13F LANDSTAR SYS COM 515098101 1,296,086 683,349 111.52 188,627 104.28 0.2636
2022-05-10 2022-03-31 13F LANDSTAR SYS COM 515098101 612,737 259,933 73.68 92,337 46.44 0.1119
2022-02-04 2021-12-31 13F LANDSTAR SYS COM 515098101 352,804 -16,157 -4.38 63,054 8.27 0.0760
2021-11-05 2021-09-30 13F LANDSTAR SYS COM 515098101 368,961 9,546 2.66 58,236 2.54 0.0738
2021-08-12 2021-06-30 13F LANDSTAR SYS COM 515098101 359,415 8,593 2.45 56,795 -2.04 0.0724
2021-05-10 2021-03-31 13F LANDSTAR SYS COM 515098101 350,822 13,807 4.10 57,976 27.75 0.0777
2021-02-10 2020-12-31 13F/A-1 LANDSTAR SYS COM 515098101 337,015 -2,974 -0.87 45,381 6.36 0.0706
2021-02-04 2020-12-31 13F LANDSTAR SYS COM 515098101 337,015 -2,974 45,381 27,225.9026
2020-11-13 2020-09-30 13F/A-1 LANDSTAR SYS COM 515098101 339,989 -53,227 -13.54 42,666 -3.20 0.0777
2020-11-09 2020-09-30 13F LANDSTAR SYS COM 515098101 393,216 0 44,078 32,358.5027
2020-08-12 2020-06-30 13F LANDSTAR SYS COM 515098101 393,216 -17,657 -4.30 44,078 12.22 0.0810
2020-05-13 2020-03-31 13F LANDSTAR SYS COM 515098101 410,873 275,468 203.44 39,279 154.81 0.0780
2020-02-06 2019-12-31 13F/A-1 LANDSTAR SYS COM 515098101 135,405 44,602 49.12 15,415 57.20 0.0204
2020-02-05 2019-12-31 13F LANDSTAR SYS COM 515098101 135,405 44,602 15,415 8,666.7632
2019-11-08 2019-09-30 13F LANDSTAR SYS COM 515098101 90,803 0 0.00 9,806 0.00 0.0130
2019-08-26 2019-06-30 13F/A-1 LANDSTAR SYS COM 515098101 90,803 90,803 9,806 0.0129
2019-08-09 2019-06-30 13F LANDSTAR SYS COM 515098101 90,803 90,803 9,806
2017-02-06 2016-12-31 13F LANDSTAR SYS COM 515098101 0 -163,794 -100.00 0 -100.00
2016-11-09 2016-09-30 13F LANDSTAR SYS COM 515098101 163,794 10,606 6.92 11,151 6.02 0.0156
2016-08-05 2016-06-30 13F LANDSTAR SYS COM 515098101 153,188 1,342 0.88 10,518 7.21 0.0152
2016-05-12 2016-03-31 13F LANDSTAR SYS COM 515098101 151,846 -1,181 -0.77 9,811 9.31 0.0145
2016-02-08 2015-12-31 13F LANDSTAR SYS COM 515098101 153,027 7,552 5.19 8,975 -2.79 0.0129
2015-11-10 2015-09-30 13F LANDSTAR SYS COM 515098101 145,475 2,706 1.90 9,233 -3.29 0.0141
2015-08-10 2015-06-30 13F LANDSTAR SYS COM 515098101 142,769 20,780 17.03 9,547 18.04 0.0137
2015-05-05 2015-03-31 13F LANDSTAR SYS COM 515098101 121,989 -4,272 -3.38 8,088 -11.68 0.0120
2015-02-09 2014-12-31 13F LANDSTAR SYS COM 515098101 126,261 -8,987 -6.64 9,158 -6.21 0.0137
2014-11-12 2014-09-30 13F LANDSTAR SYS COM 515098101 135,248 5,675 4.38 9,764 17.75 0.0158
2014-08-08 2014-06-30 13F LANDSTAR SYS COM 515098101 129,573 -3,338 -2.51 8,292 5.35 0.0139
2014-05-07 2014-03-31 13F LANDSTAR SYS COM 515098101 132,911 2,034 1.55 7,871 4.68 0.0144
2014-02-06 2013-12-31 13F LANDSTAR SYS COM 515098101 130,877 -1,821 -1.37 7,519 1.21 0.0154
2013-11-12 2013-09-30 13F LANDSTAR SYS COM 515098101 132,698 -975 -0.73 7,429 7.92 0.0179
2013-08-01 2013-06-30 13F LANDSTAR SYS COM 515098101 133,673 133,673 6,884 0.0190
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.