Ranked by reported Q2 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. | 6.8M | $677.7M | -18.0% | 12.602% | 0.01% |
| 2 | WELLINGTON MANAGEMENT GROUP LLP | 4.7M | $463.4M | +148.8% | 8.618% | 0.08% |
| 3 | VANGUARD PORTFOLIO MANAGEMENT LLC | 3.1M | $309.6M | -14.5% | 5.757% | 0.01% |
| 4 | VANGUARD CAPITAL MANAGEMENT LLC | 2.4M | $233.5M | +0.9% | 4.341% | 0.00% |
| 5 | FIRST TRUST ADVISORS LP | 2.2M | $221.5M | -22.6% | 4.119% | 0.13% |
| 6 | STATE STREET CORP | 1.8M | $180.0M | -12.1% | 3.344% | 0.00% |
| 7 | MILLENNIUM MANAGEMENT LLC | 1.5M | $148.4M | +273.5% | 2.759% | 0.05% |
| 8 | Southpoint Capital Advisors LP | 1.4M | $138.8M | — | 2.580% | 3.16% |
| 9 | MORGAN STANLEY | 1.3M | $127.3M | +131.1% | 2.368% | 0.01% |
| 10 | DIMENSIONAL FUND ADVISORS LP | 1.2M | $117.4M | +2.2% | 2.183% | 0.02% |
| 11 | GEODE CAPITAL MANAGEMENT, LLC | 1.1M | $108.9M | -24.6% | 2.024% | 0.01% |
| 12 | Point72 Asset Management, L.P. | 890K | $88.2M | +3687.2% | 1.640% | 0.10% |
| 13 | AMERICAN CENTURY COMPANIES INC | 885K | $87.7M | -17.9% | 1.631% | 0.04% |
| 14 | NORDEA INVESTMENT MANAGEMENT AB | 887K | $86.2M | +1481.6% | 1.636% | 0.07% |
| 15 | Invesco Ltd. | 848K | $84.0M | -39.3% | 1.562% | 0.01% |
| 16 | WESTFIELD CAPITAL MANAGEMENT CO LP | 737K | $73.1M | -0.8% | 1.359% | 0.24% |
| 17 | FMR LLC | 637K | $63.2M | -9.7% | 1.175% | 0.00% |
| 18 | CITADEL ADVISORS LLC | 594K | $58.9M | +88.4% | 1.095% | 0.00% |
| 19 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 555K | $55.0M | -18.9% | 1.022% | 0.01% |
| 20 | UBS Group AG | 545K | $54.0M | -8.6% | 1.004% | 0.01% |
| 21 | NORGES BANK | 517K | $51.3M | — | 0.954% | 0.01% |
| 22 | FRONTIER CAPITAL MANAGEMENT CO LLC | 469K | $46.5M | — | 0.864% | 0.43% |
| 23 | Nuveen, LLC | 463K | $45.9M | +68.9% | 0.853% | 0.01% |
| 24 | Madison Avenue Partners, LP | 462K | $45.8M | — | 0.852% | 1.97% |
| 25 | MACKENZIE FINANCIAL CORP | 462K | $45.8M | +50.3% | 0.851% | 0.05% |
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 Q2 2026, grouped by how each filer changed its position.
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 |
|---|---|---|---|---|---|---|
| Q2 2026 | 453 | 10% | 103.59% | +2.62 pp | $5.35B | 29% |
| Q1 2026 | 506 | +8.1% | 100.97% | 2.61 pp | $7.56B | +13% |
| Q4 2025 | 468 | +6.1% | 103.58% | +10.50 pp | $6.67B | +2.1% |
| Q3 2025 | 441 | +16% | 93.08% | 3.33 pp | $6.53B | +73% |
| Q2 2025 | 380 | +6.4% | 96.41% | 0.63 pp | $3.77B | +36% |
| Q1 2025 | 357 | +2.6% | 97.04% | +3.84 pp | $2.77B | 22% |
| Q4 2024 | 348 | +18% | 93.20% | +1.15 pp | $3.56B | +34% |
| Q3 2024 | 295 | — | 92.05% | — | $2.65B | — |
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 a key fundamental indicator 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 Q2 2026 13F filings, institutional ownership of Primoris Services Corporation stands at 103.6%, held across 453 reporting institutions.
BlackRock, Inc. is the largest reported institutional holder of PRIM, with approximately 6,837,017 shares worth $0.68B as of Q2 2026.
Yes — 3 widely-followed marquee investors appear among the top 25 institutional holders of PRIM, including MILLENNIUM MANAGEMENT LLC, Point72 Asset Management, L.P., CITADEL ADVISORS LLC.
Our composite Smart Money Score for PRIM is 60 out of 100 (Bullish). It combines net institutional buying activity, ownership shift, marquee investor presence, and holder-count growth.
108 institutions opened new positions in PRIM during Q2 2026, while 166 fully exited. 73 added to existing positions and 256 trimmed.
PRIM institutional ownership rose by 2.62 percentage points quarter-over-quarter, with a net change of -53 holders.
The top 10 institutions account for 49.0% of all reported 13F value in PRIM, and the top 25 account for 67.6%.
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