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PRIM · Primoris Services Corp · Holdings

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Market Cap
$4.05B
Shares
53.83M

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: 452
Total Value: $5,575,292,103
Total Shares: 56,250,396
Showing 1–100 of 469 holdings by value · page 1 of 5

Institutional Ownership Trend

26 quarters

Holder Concentration

Across 452 13F filers · Δ vs Mar 31, 2026
Top Holder
12.2%
Sep 2023 → Jun 2026 · range 10.4% – 15.0%
−2.9 pts
Top 5
34.2%
Sep 2023 → Jun 2026 · range 33.5% – 39.4%
−2.2 pts
Top 10
46.9%
Sep 2023 → Jun 2026 · range 44.6% – 56.3%
−3.8 pts
HHI
352
Sep 2023 → Jun 2026 · range 346 – 461
Broadly held−70

Quarterly Activity

vs Mar 31, 2026
New
117
Increased
129
Decreased
163
Sold Out
180
Unchanged
43
Holder count: -63
Institutional value: -29.7%
Shares held: +1.5%

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 469
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Holder Value (USD) % of 13F Shares Open
Key facts CIK 1361538 CUSIP 74164F103 13F (30d) 140 filings 137 filers Visit website Investor relations