Ranked by reported Q1 2026 13F market value
Share of total reported institutional value in PRIM held by the largest 10 / 25 filers.
| # | Institution | Shares Held | Market Value | QoQ Change | Ownership % | % of Fund |
|---|---|---|---|---|---|---|
| 1 | BlackRock, Inc. | 8.3M | $1.19B | +0.5% | 15.380% | 0.02% |
| 2 | VANGUARD PORTFOLIO MANAGEMENT LLC | 3.7M | $522.7M | — | 6.738% | 0.03% |
| 3 | FULLER & THALER ASSET MANAGEMENT, INC. | 3.0M | $424.4M | -2.4% | 5.471% | 1.43% |
| 4 | FIRST TRUST ADVISORS LP | 2.9M | $412.8M | +47.4% | 5.322% | 0.29% |
| 5 | VANGUARD CAPITAL MANAGEMENT LLC | 2.3M | $334.1M | — | 4.307% | 0.01% |
| 6 | STATE STREET CORP | 2.1M | $295.3M | +2.6% | 3.805% | 0.01% |
| 7 | WELLINGTON MANAGEMENT GROUP LLP | 1.9M | $268.9M | +7.6% | 3.466% | 0.05% |
| 8 | GEODE CAPITAL MANAGEMENT, LLC | 1.5M | $208.3M | +9.9% | 2.685% | 0.01% |
| 9 | Invesco Ltd. | 1.4M | $199.8M | +32.0% | 2.575% | 0.03% |
| 10 | DIMENSIONAL FUND ADVISORS LP | 1.2M | $165.8M | -4.6% | 2.137% | 0.03% |
| 11 | AMERICAN CENTURY COMPANIES INC | 1.1M | $154.2M | +1.8% | 1.988% | 0.08% |
| 12 | Artemis Investment Management LLP | 880K | $125.8M | +10.0% | 1.622% | 1.33% |
| 13 | CONGRESS ASSET MANAGEMENT CO /MA | 818K | $117.0M | +0.4% | 1.508% | 0.84% |
| 14 | WESTFIELD CAPITAL MANAGEMENT CO LP | 743K | $106.3M | -21.9% | 1.371% | 0.45% |
| 15 | GOLDMAN SACHS GROUP INC | 743K | $106.3M | +21.4% | 1.370% | 0.01% |
| 16 | FMR LLC | 706K | $101.0M | -1.1% | 1.302% | 0.01% |
| 17 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 684K | $97.8M | -3.8% | 1.260% | 0.01% |
| 18 | Merewether Investment Management, LP | 675K | $96.5M | -13.7% | 1.244% | 1.87% |
| 19 | UBS Group AG | 596K | $85.2M | -6.8% | 1.098% | 0.01% |
| 20 | ALLIANCEBERNSTEIN L.P. | 683K | $84.8M | -15.6% | 1.260% | 0.03% |
| 21 | MORGAN STANLEY | 556K | $79.5M | -6.2% | 1.025% | 0.00% |
| 22 | NORTHERN TRUST CORP | 516K | $73.9M | +2.9% | 0.952% | 0.01% |
| 23 | BRUNI J V & CO /CO | 437K | $62.5M | -1.3% | 0.806% | 6.53% |
| 24 | MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | 423K | $60.5M | +8.1% | 0.780% | 0.08% |
| 25 | FEDERATED HERMES, INC. | 415K | $59.4M | -16.6% | 0.766% | 0.10% |
denotes a marquee investor (Buffett, Burry, ARK, Tiger Global, Pershing Square, Baupost and other widely-followed managers). “% of Fund” shows how much of that investor’s total 13F portfolio is invested in PRIM — a direct measure of their conviction.
Filings activity in PRIM during Q1 2026, grouped by how each filer changed its position.
Institutions that opened a new PRIM position in Q1 2026
Institutions that fully closed their PRIM position in Q1 2026
8 quarters of 13F filings · Δ columns show change vs prior quarter
| Quarter | Inst. Holders | Δ Holders | Ownership % | Δ Ownership | Total 13F Value | Δ Value |
|---|---|---|---|---|---|---|
| Q1 2026 | 497 | +6.9% | 138.36% | +14.05 pp | $7.40B | +11% |
| Q4 2025 | 465 | +6.2% | 124.31% | +2.44 pp | $6.65B | +2.0% |
| Q3 2025 | 438 | +15% | 121.87% | +51.42 pp | $6.52B | +73% |
| Q2 2025 | 380 | +6.4% | 70.45% | +18.73 pp | $3.77B | +36% |
| Q1 2025 | 357 | +2.6% | 51.72% | 14.81 pp | $2.77B | 22% |
| Q4 2024 | 348 | +18% | 66.53% | +17.02 pp | $3.56B | +34% |
| Q3 2024 | 295 | +2.4% | 49.51% | +7.98 pp | $2.65B | +19% |
| Q2 2024 | 288 | — | 41.53% | — | $2.22B | — |
Source: SEC 13F institutional filings. Ownership % requires market cap data and will show once linked. Δ columns compare to the immediately prior filed quarter.
Latest Form 4 transactions by company officers and directors. Insider buys are widely viewed as the highest-conviction signal because executives are risking personal capital.
| Date | Insider | Action | Shares | Price | Value |
|---|---|---|---|---|---|
| May 27, 2026 | Vadlamudi Koti | Buy | 8K | $127.96 | $1.0M |
Quick answers to the most common questions about buying PRIM stock.
Based on Q1 2026 13F filings, institutional ownership of Primoris Services Corporation stands at 138.4%, held across 497 reporting institutions.
BlackRock, Inc. is the largest reported institutional holder of PRIM, with approximately 8,340,660 shares worth $1.19B as of Q1 2026.
No marquee "smart money" managers (Berkshire, Burry, ARK, Tiger Global, Pershing Square, Baupost, etc.) currently appear among the top 25 institutional holders of PRIM.
Our composite Smart Money Score for PRIM is 54 out of 100 (Neutral). It combines net institutional buying activity, ownership shift, marquee investor presence, and holder-count growth.
104 institutions opened new positions in PRIM during Q1 2026, while 72 fully exited. 287 added to existing positions and 105 trimmed.
PRIM institutional ownership rose by 14.05 percentage points quarter-over-quarter, with a net change of +32 holders.
The top 10 institutions account for 54.4% of all reported 13F value in PRIM, and the top 25 account for 73.4%.
All data is sourced from SEC Form 13F filings, which institutional investment managers with at least $100M in assets are required to file each quarter. We process every 13F filing from EDGAR and recompute the aggregates after each cycle. Insider transactions are sourced from Form 4 filings.
Primoris Services Corporation (PRIM) Institutional Ownership