Landstar System, Inc.
US ˙ NasdaqGS ˙ US5150981018

SecurityLSTR / Landstar System, Inc.
InstitutionVestmark Advisory Solutions, Inc.
Latest Disclosed Ownership17,399 shares
Latest Disclosed Value $ 2,789,234
Vestmark Advisory Solutions, Inc. reports 13.74% increase in ownership of LSTR / Landstar System, Inc.

On May 15, 2026 - Vestmark Advisory Solutions, Inc. filed a 13F-HR form disclosing ownership of 17,399 shares of Landstar System, Inc. (US:LSTR) valued at $2,789,234 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 6, 2026 disclosing 15,297 shares of Landstar System, Inc.. This represents a change in shares of 13.74% during the quarter. The current value of the position is $3,745,135 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)
2026-05-15 2026-03-31 13F LANDSTAR SYS COM 515098101 17,399 2,102 13.74 2,789 26.89 0.0192
2026-02-06 2025-12-31 13F LANDSTAR SYS COM 515098101 15,297 -5,288 -25.69 2,198 -12.85 0.0297
2025-11-10 2025-09-30 13F LANDSTAR SYS COM 515098101 20,585 78 0.38 2,523 -11.51 0.0481
2025-08-06 2025-06-30 13F LANDSTAR SYS COM 515098101 20,507 -18,629 -47.60 2,851 -51.51 0.0412
2025-05-13 2025-03-31 13F LANDSTAR SYS COM 515098101 39,136 18,847 92.89 5,878 68.62 0.1514
2025-02-06 2024-12-31 13F LANDSTAR SYS COM 515098101 20,289 3,566 21.32 3,487 10.39 0.1201
2024-11-14 2024-09-30 13F LANDSTAR SYS COM 515098101 16,723 -10 -0.06 3,158 2.33 0.1176
2024-08-12 2024-06-30 13F LANDSTAR SYS COM 515098101 16,733 -23 -0.14 3,087 -4.43 0.1289
2024-05-15 2024-03-31 13F LANDSTAR SYS COM 515098101 16,756 -93 -0.55 3,230 -1.01 0.1391
2024-02-06 2023-12-31 13F LANDSTAR SYS COM 515098101 16,849 -278 -1.62 3,263 7.66 0.1658
2023-11-06 2023-09-30 13F LANDSTAR SYS COM 515098101 17,127 -1,684 -8.95 3,030 -16.32 0.2203
2023-08-07 2023-06-30 13F LANDSTAR SYS COM 515098101 18,811 -46 -0.24 3,622 7.13 0.1379
2023-05-09 2023-03-31 13F LANDSTAR SYS COM 515098101 18,857 -1,619 -7.91 3,380 1.35 0.1464
2023-01-20 2022-12-31 13F LANDSTAR SYS COM 515098101 20,476 0 0.00 3,336 12.82 0.1625
2022-11-03 2022-09-30 13F LANDSTAR SYS COM 515098101 20,476 3,247 18.85 2,956 18.00 0.1648
2022-08-04 2022-06-30 13F LANDSTAR SYS COM 515098101 17,229 2,884 20.10 2,505 15.81 0.1431
2022-04-27 2022-03-31 13F LANDSTAR SYS COM 515098101 14,345 68 0.48 2,163 -15.38 0.1224
2022-01-31 2021-12-31 13F LANDSTAR SYS COM 515098101 14,277 290 2.07 2,556 15.76 0.1442
2021-11-15 2021-09-30 13F LANDSTAR SYS COM 515098101 13,987 27 0.19 2,208 0.09 0.1495
2021-08-09 2021-06-30 13F LANDSTAR SYS COM 515098101 13,960 12,602 927.98 2,206 884.82 0.1570
2021-05-10 2021-03-31 13F LANDSTAR SYS COM 515098101 1,358 1,358 224 0.0199
2021-02-04 2020-12-31 13F LANDSTAR SYS COM 515098101 0 -1,947 -100.00 0 -100.00
2020-10-19 2020-09-30 13F LANDSTAR SYS COM 515098101 1,947 -353 -15.35 244 -5.43 0.0328
2020-08-13 2020-06-30 13F LANDSTAR SYS COM 515098101 2,300 -109 -4.52 258 11.69 0.0399
2020-05-06 2020-03-31 13F LANDSTAR SYS COM 515098101 2,409 2,409 231 0.0452
2020-02-14 2019-12-31 13F LANDSTAR SYS COM 515098101 0 -2,642 -100.00 0 -100.00
2019-11-05 2019-09-30 13F LANDSTAR SYS COM 515098101 2,642 -221 -7.72 297 -3.88 0.0482
2019-08-20 2019-06-30 13F LANDSTAR SYS COM 515098101 2,863 -32 -1.11 309 -2.52 0.0529
2019-05-14 2019-03-31 13F LANDSTAR SYS COM 515098101 2,895 2,895 317 0.0565
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.