Landstar System, Inc. (LSTR) ownership: Top institutional holder: KAYNE ANDERSON RUDNICK INVESTMENT MANAGEMENT LLC ($550.22M). Insider activity: Net Seller (1 buys, 19 sells). 2 recent congressional STOCK Act disclosures. SEC EDGAR first-party data.
| Holder | Shares | Market Value | Reported |
|---|---|---|---|
| KAYNE ANDERSON RUDNICK INVESTMENT MANAGEMENT LLC | 3432243.00 | $550.22M | 2026-03-31 |
| BlackRock, Inc. | 3233185.00 | $518.31M | 2026-03-31 |
| VANGUARD GROUP INC | 3209660.00 | $461.23M | 2025-12-31 |
| AQR CAPITAL MANAGEMENT LLC | 1835604.00 | $293.79M | 2026-03-31 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 1752711.00 | $280.98M | 2026-03-31 |
| VANGUARD CAPITAL MANAGEMENT LLC | 1531900.00 | $245.58M | 2026-03-31 |
| Boston Partners | 1420213.00 | $227.76M | 2026-03-31 |
| BlackRock Fund Advisors | 2245322.00 | $191.53M | 2016-12-31 |
| Insider | Transaction | Value | Date |
|---|---|---|---|
| Sell | null | 2026-06-15 | |
| Sell | null | 2026-06-05 | |
| Sell | null | 2026-05-06 | |
| Sell | null | 2026-05-06 | |
| Sell | null | 2026-05-06 | |
| Sell | null | 2026-05-06 | |
| Sell | null | 2026-05-06 | |
| Sell | null | 2026-05-06 |
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Institutional data from SEC Form 13F. Insider data from SEC Form 4. Congressional data from STOCK Act disclosures. Not personalized investment advice.