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LSTR · Landstar System Inc

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$186.58 +4.16 (+2.28%) At close · Aug 21
Market Cap
$6.33B
Shares
33.93M

Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.

Holders: 544
Total Value: $7,117,295,661
Total Shares: 34,414,661

Institutional Ownership Trend

26 quarters

Holder Concentration

Across 544 13F filers · Δ vs Mar 31, 2026
Top Holder
9.8%
Sep 2023 → Jun 2026 · range 9.6% – 11.5%
+0.2 pts
Top 5
34.6%
Sep 2023 → Jun 2026 · range 33.1% – 43.4%
+1.6 pts
Top 10
49.6%
Sep 2023 → Jun 2026 · range 49.0% – 56.8%
+0.6 pts
HHI
350
Sep 2023 → Jun 2026 · range 341 – 472
Broadly held+9

Quarterly Activity

vs Mar 31, 2026
New
111
Increased
181
Decreased
158
Sold Out
48
Unchanged
94
Holder count: +63
Institutional value: +24.5%
Shares held: -3.5%

Top Buyers

vs Mar 31, 2026
Institution Added Now Holds Open

Top Sellers

vs Mar 31, 2026
Institution Sold Now Holds Open

Top New Positions

vs Mar 31, 2026
Institution Acquired Value (USD) Open

Top Sold-Out Positions

vs Mar 31, 2026
Institution Previously Held Last Value (USD) Open
Showing 100 of 550
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Holder Value (USD) % of 13F Shares Open
Key facts CIK 853816 CUSIP 515098101 13F (30d) 485 filings 453 filers Visit website Investor relations