PRIM · Primoris Services Corp · Holdings
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.
Institutional Ownership Trend
Superinvestors Holding PRIM
All superinvestors →Holder Concentration
Across 455 13F filersWho Holds PRIM
Last 8 quarters through Sep 30, 2026 (filing window open)Each kind of 13F filer's share of the common shares 13F filers report. Holder type comes from regulatory records, never the filer's name; style, turnover and horizon are measured from each filer's own 13F book. The quarter selector does not change this card.
Jun 30, 2026, the newest closed quarter: 449 filers, like-for-like change -1.0%; actively managed books +2.5%; index-like books -8.4%.
| Holder type | Share | Filers | Change |
|---|---|---|---|
| Registered adviser | 44.6% | 239 | -10.0% |
| Exempt adviser | 1.1% | 7 | +393.8% |
| Adviser | 3.9% | 11 | -5.7% |
| Bank | 7.1% | 18 | -19.0% |
| Insurer | 0.7% | 2 | -3.6% |
| Broker-dealer | 0.0% | 3 | -23.5% |
| Benefit plan | 0.5% | 8 | -4.4% |
| Non-US | 3.9% | 13 | +1.0% |
| Holding company | 26.0% | 14 | +14.7% |
| Unknown | 12.0% | 134 | +16.2% |
| Style | Share | Filers | Change |
|---|---|---|---|
| Index-like | 30.7% | 43 | -8.4% |
| Systematic-like | 6.0% | 25 | +129.0% |
| Concentrated | 6.3% | 87 | +247.4% |
| Diversified active | 57.0% | 294 | -9.7% |
| Not measured | 0.0% | 0 | — |
| Unknown | 0.0% | 0 | — |
| Turnover | Share | Filers | Change |
|---|---|---|---|
| Low turnover | 43.4% | 242 | -13.8% |
| Medium turnover | 30.9% | 105 | -5.2% |
| High turnover | 13.6% | 69 | +171.8% |
| Unknown | 12.1% | 33 | -8.2% |
| Not measured | 0.0% | 0 | — |
| Holding horizon | Share | Filers | Change |
|---|---|---|---|
| Short horizon | 15.5% | 58 | +23.6% |
| Medium horizon | 18.8% | 72 | -3.8% |
| Long horizon | 57.2% | 281 | -7.6% |
| Unknown | 8.5% | 38 | +19.6% |
| Not measured | 0.0% | 0 | — |
| 13F book size | Share | Filers | Change |
|---|---|---|---|
| Under $1B | 3.0% | 106 | +26.0% |
| $1B to $10B | 13.8% | 135 | +72.2% |
| $10B to $100B | 14.2% | 128 | -28.2% |
| $100B or more | 69.0% | 80 | -2.6% |
| Not measured | 0.0% | 0 | — |
| Client base | Share | Filers | Change |
|---|---|---|---|
| Individuals and high net worth | 2.6% | 117 | -28.4% |
| Pooled investment vehicles | 13.4% | 41 | +168.5% |
| Registered funds and BDCs | 21.8% | 30 | -32.2% |
| Pension and profit sharing plans | 0.2% | 2 | +689.4% |
| Insurance companies | 0.0% | 2 | -63.9% |
| Charitable organizations | 0.0% | 1 | +600.0% |
| Governments and sovereign funds | 1.6% | 5 | -10.5% |
| Other investment advisers | 0.1% | 7 | -1.8% |
| Other | 0.2% | 4 | -16.3% |
| Diversified | 4.7% | 29 | -30.5% |
| Corporations | 0.0% | 0 | — |
| Unknown | 55.5% | 211 | +8.1% |
| Private funds | Share | Filers | Change |
|---|---|---|---|
| Hedge funds | 20.4% | 66 | +51.9% |
| Private equity funds | 0.4% | 12 | -16.4% |
| Venture capital funds | 0.0% | 2 | -37.6% |
| Real estate funds | 0.1% | 6 | +422.0% |
| Securitized asset funds | 0.3% | 2 | +28.6% |
| Other private funds | 6.2% | 22 | +1.3% |
| Mixed private funds | 0.1% | 2 | -96.4% |
| Private funds, type not stated | 0.6% | 8 | -32.9% |
| No private funds | 17.8% | 126 | -34.7% |
| Liquidity funds | 0.0% | 0 | -100.0% |
| Unknown | 54.3% | 203 | +6.1% |
| Location | Share | Filers | Change |
|---|---|---|---|
| United States | 87.0% | 377 | -4.1% |
| Outside the US | 13.0% | 72 | +29.2% |
The Sep 30, 2026 filing window is still open, so its bar carries the Jun 30, 2026 positions of filers that have not filed yet.
How the mix is measured
Shares are 13F common shares restated to today's split basis; options and principal amounts are left out. The change compares only filers with a 13F in both quarters and keeps each filer in its bucket of the later quarter on both sides; a filer that continues under a new CIK is compared through its successor. Holder type comes from each filer's current regulatory profile; client base and private funds come from the Form ADV roster current at each quarter end (rosters from December 2019, so an earlier quarter reads Unknown). Style, turnover, horizon and book size are measured from each filer's 13F book in the newest measured quarter, and Not measured means none was. Actively managed books are those measured systematic-like, concentrated or diversified active.
Excluded 6 holders with no observed 2026-03-31 13F and 8 holders with no observed 2026-06-30 13F. Compared across CIK changes: JANUS HENDERSON GROUP PLC continues as Jupiter Topco LLC.
Conviction and Crowding
449 13F filers, quarter ended Jun 30, 2026Measured across every 13F filer's common-share book once the quarter's filing window closed. Crowding counts filers with high turnover or that advise private funds on Form ADV.
Managers in the top fifth by current three-year FundScore alpha were net buyers of $16,433,750 (1 buying, 0 selling).
Estimated Holder Cost Basis
Quarter ended Jun 30, 2026, on that quarter's share basisEstimated, never filed: each 13F buy is costed at its quarter's average traded price and each sale keeps the average cost, so this is what holders paid on average if they traded evenly through each quarter.
Estimated cost covers 36.8% of the 13F shares; positions already held when a filer's 13F history starts, or bought in a quarter without a trusted average price, have no estimate.
Shared Holders
Companies PRIM's active holders also own, quarter ended Jun 30, 2026| # | Company | Shared holders |
|---|---|---|
| 1 | BKV BKV Corp | 6 |
| 2 | WFRD Weatherford International plc | 8 |
| 3 | DAR Darling Ingredients Inc. | 11 |
| 4 | MTZ Mastec Inc | 16 |
| 5 | GSM Ferroglobe PLC | 5 |
| 6 | GEO Geo Group Inc | 6 |
| 7 | MWH SOLV Energy, Inc. | 6 |
| 8 | POWL Powell Industries Inc | 11 |
| 9 | GVA Granite Construction Inc | 7 |
| 10 | MOD Modine Manufacturing Co | 12 |
Shareholder Targets
13F filers that own its peers but not PRIM, quarter ended Jun 30, 2026Found through its holder-overlap peers: BKV, WFRD, DAR, MTZ, GSM, GEO, MWH, POWL, GVA, MOD, LGN, WOLF, INIO, INDI, EROC, XIFR, DPC, HUT, TCBI, SANM. 1,541 filers in all.
| # | Filer | In peers | Largest peers |
|---|---|---|---|
| 1 | Advent International, L.P. Unknown, Concentrated | $13,246,455,031 2 held | INIO, DPC |
| 2 | AMERICAN SECURITIES LLC Registered adviser, Unknown | $2,823,439,654 1 held | MWH |
| 3 | PECONIC PARTNERS LLC Registered adviser, Concentrated | $1,530,448,001 1 held | MTZ |
| 4 | Hill City Capital, LP Registered adviser, Concentrated | $1,504,786,814 6 held | MTZ, DPC, GVA |
| 5 | COATUE MANAGEMENT LLC Registered adviser, Concentrated | $1,336,810,159 2 held | HUT, MTZ |
| 6 | T. Rowe Price Investment Management, Inc. Adviser, Diversified active | $1,335,681,475 8 held | TCBI, MOD, MTZ |
| 7 | LONE PINE CAPITAL LLC Registered adviser, Diversified active | $1,226,135,201 2 held | HUT, MTZ |
| 8 | JANE STREET GROUP, LLC Unknown, Diversified active | $1,179,446,103 14 held | SANM, MOD, POWL |
| 9 | Capital Research Global Investors Adviser, Diversified active | $904,761,294 4 held | MOD, INIO, WFRD |
| 10 | Hood River Capital Management LLC Registered adviser, Diversified active | $891,885,853 6 held | MTZ, HUT, GVA |
Fund Ownership of PRIM by Fund Type
Registered funds' Form N-PORT reports for the quarter ended Jun 30, 2026Index funds and index ETFs hold 30.91% of shares outstanding.
| Fund type | Of shares outstanding | Shares |
|---|---|---|
| Index funds | 4.64% | 2,496,909 |
| Index ETFs | 26.28% | 14,145,124 |
| Active ETFs | 1.55% | 835,297 |
| Active funds | 13.60% | 7,321,057 |
| Unclassified | 1.51% | 813,219 |
| All registered funds | 47.58% | 25,611,606 |
How fund types are measured
Each fund series counts once, with its latest Form N-PORT report dated inside the quarter; only long share positions count, restated to today's split basis. The fund type is the series' latest Form N-CEN answer on or before the quarter end (the index-fund box and the exchange-traded flag), never its name. Unclassified funds have no usable N-CEN; unit investment trusts are among them, so index ownership is a floor. Funds sit inside their advisers' 13F reports, so these shares overlap the 13F figures and are never added to them.
| Holder | Value (USD) | % of 13F | Shares | Type | Filed | Open |
|---|---|---|---|---|---|---|
| Mega BlackRock, Inc. Holding company | $677,685,116 | 12.27% | 6,837,017 | Shares | 2026-08-07 | |
| Mega WELLINGTON MANAGEMENT GROUP LLP Holding company | $463,434,268 | 8.39% | 4,675,487 | Shares | 2026-08-14 | |
| Mega VANGUARD PORTFOLIO MANAGEMENT LLC Registered adviser | $309,587,046 | 5.60% | 3,123,356 | Shares | 2026-08-13 | |
| Mega VANGUARD CAPITAL MANAGEMENT LLC Registered adviser | $233,476,267 | 4.23% | 2,355,491 | Shares | 2026-08-13 | |
| Mega FIRST TRUST ADVISORS LP Registered adviser | $221,506,239 | 4.01% | 2,234,728 | Shares | 2026-08-11 | |
| Mega STATE STREET CORP Bank | $179,817,854 | 3.25% | 1,814,143 | Shares | 2026-09-22 | |
| Mega MILLENNIUM MANAGEMENT LLC Registered adviser | $147,960,388 | 2.68% | 1,492,740 | Shares | 2026-08-14 | |
| Mid Southpoint Capital Advisors LP Registered adviser | $138,768,000 | 2.51% | 1,400,000 | Shares | 2026-08-14 | |
| Mega MORGAN STANLEY Holding company | $127,316,663 | 2.30% | 1,284,470 | Shares | 2026-08-13 | |
| Mega DIMENSIONAL FUND ADVISORS LP Registered adviser | $117,411,800 | 2.13% | 1,184,542 | Shares | 2026-08-11 | |
| Mega GEODE CAPITAL MANAGEMENT, LLC Registered adviser | $108,864,982 | 1.97% | 1,098,315 | Shares | 2026-08-12 | |
| Mega NORDEA INVESTMENT MANAGEMENT AB Non-US | $87,952,346 | 1.59% | 887,332 | Shares | 2026-08-05 | |
| Mega AMERICAN CENTURY COMPANIES INC | $87,686,012 | 1.59% | 884,645 | Shares | 2026-08-12 | |
| Large Point72 Asset Management, L.P. Registered adviser | $86,877,094 | 1.57% | 876,484 | Shares | 2026-08-14 | |
| Mega Invesco Ltd. Adviser | $84,023,227 | 1.52% | 847,692 | Shares | 2026-08-14 | |
| Large WESTFIELD CAPITAL MANAGEMENT CO LP Registered adviser | $73,100,306 | 1.32% | 737,493 | Shares | 2026-08-12 | |
| Mega FMR LLC Holding company | $63,165,705 | 1.14% | 637,265 | Shares | 2026-08-13 | |
| Mega CHARLES SCHWAB INVESTMENT MANAGEMENT INC Registered adviser | $54,970,663 | 1.00% | 554,587 | Shares | 2026-08-14 | |
| Mega UBS Group AG Bank | $53,986,102 | 0.98% | 544,654 | Shares | 2026-08-13 | |
| Mega NORGES BANK Non-US | $51,276,758 | 0.93% | 517,320 | Shares | 2026-08-12 | |
| Mid Van Berkom & Associates Inc. Registered adviser | $50,467,641 | 0.91% | 509,157 | Shares | 2026-08-05 | |
| Large FRONTIER CAPITAL MANAGEMENT CO LLC Registered adviser | $46,463,689 | 0.84% | 468,762 | Shares | 2026-08-14 | |
| Mega Nuveen, LLC | $45,887,999 | 0.83% | 462,954 | Shares | 2026-08-11 | |
| Mid Madison Avenue Partners, LP Registered adviser | $45,799,188 | 0.83% | 462,058 | Shares | 2026-08-14 | |
| Large MACKENZIE FINANCIAL CORP Registered adviser | $45,778,274 | 0.83% | 461,847 | Shares | 2026-08-13 | |
| Large FEDERATED HERMES, INC. Adviser | $44,136,449 | 0.80% | 445,283 | Shares | 2026-08-12 | |
| Large MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | $42,738,759 | 0.77% | 431,182 | Shares | 2026-08-14 | |
| Mega GOLDMAN SACHS GROUP INC Holding company | $42,684,045 | 0.77% | 430,630 | Shares | 2026-08-14 | |
| Mid Electron Capital Partners, LLC Registered adviser | $41,145,009 | 0.74% | 415,103 | Shares | 2026-08-14 | |
| Mega JPMORGAN CHASE & CO Bank | $40,014,642 | 0.72% | 403,699 | Shares | 2026-08-12 | |
| Large WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC Registered adviser | $39,644,629 | 0.72% | 399,966 | Shares | 2026-08-12 | |
| Small VALUE HOLDINGS MANAGEMENT CO. LLC | $39,592,790 | 0.72% | 399,443 | Shares | 2026-08-11 | |
| Mid COOPER CREEK PARTNERS MANAGEMENT LLC Adviser | $38,543,604 | 0.70% | 388,858 | Shares | 2026-08-14 | |
| Mid HENNESSY ADVISORS INC Registered adviser | $38,111,640 | 0.69% | 384,500 | Shares | 2026-07-16 | |
| Mid BRUNI J V & CO /CO Registered adviser | $37,749,356 | 0.68% | 380,845 | Shares | 2026-08-10 | |
| Mid Yaupon Capital Management LP Registered adviser | $36,374,264 | 0.66% | 366,972 | Shares | 2026-08-14 | |
| Mega PRINCIPAL FINANCIAL GROUP INC Insurer | $34,481,369 | 0.62% | 347,875 | Shares | 2026-08-04 | |
| Mega VANGUARD FIDUCIARY TRUST CO | $33,808,246 | 0.61% | 341,084 | Shares | 2026-08-13 | |
| Large Vontobel Holding Ltd. | $33,705,841 | 0.61% | 452,306 | Shares | 2026-10-16 | |
| Mega Bank of New York Mellon Corp Bank | $31,972,343 | 0.58% | 322,562 | Shares | 2026-08-06 | |
| Mega NORTHERN TRUST CORP Bank | $31,716,118 | 0.57% | 319,977 | Shares | 2026-08-13 | |
| Mega SCHRODER INVESTMENT MANAGEMENT GROUP Registered adviser | $30,063,294 | 0.54% | 303,302 | Shares | 2026-08-13 | |
| Mega CITADEL ADVISORS LLC Registered adviser | $29,970,715 | 0.54% | 302,368 | Shares | 2026-09-02 | |
| Mega MARSHALL WACE, LLP Exempt adviser | $29,201,246 | 0.53% | 294,605 | Shares | 2026-08-13 | |
| Large JACOBS LEVY EQUITY MANAGEMENT, INC Registered adviser | $27,869,173 | 0.50% | 281,166 | Shares | 2026-08-14 | |
| Large NOMURA HOLDINGS INC Holding company | $24,839,472 | 0.45% | 250,600 | Call | 2026-08-14 | |
| Mega CANADA PENSION PLAN INVESTMENT BOARD Non-US | $24,588,500 | 0.45% | 248,068 | Shares | 2026-08-14 | |
| Mega JANE STREET GROUP, LLC | $22,639,008 | 0.41% | 228,400 | Call | 2026-08-14 | |
| Mid Merewether Investment Management, LP Registered adviser | $21,004,816 | 0.38% | 211,913 | Shares | 2026-08-14 | |
| Mega AMERIPRISE FINANCIAL INC Adviser | $20,722,522 | 0.38% | 209,065 | Shares | 2026-08-14 | |
| Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP | $20,458,862 | 0.37% | 206,405 | Shares | 2026-08-14 | |
| Large Public Sector Pension Investment Board Non-US | $20,300,172 | 0.37% | 204,804 | Shares | 2026-08-13 | |
| Mid Raiffeisen Bank International AG | $19,625,760 | 0.36% | 198,000 | Shares | 2026-08-03 | |
| Mid Engine Capital Management, LP Registered adviser | $19,411,462 | 0.35% | 195,838 | Shares | 2026-08-14 | |
| Large Allspring Global Investments Holdings, LLC Holding company | $18,619,195 | 0.34% | 187,845 | Shares | 2026-08-13 | |
| Mega RAYMOND JAMES FINANCIAL INC | $17,731,773 | 0.32% | 178,892 | Shares | 2026-08-14 | |
| Mega BANK OF AMERICA CORP /DE/ Bank | $17,267,593 | 0.31% | 174,209 | Shares | 2026-08-14 | |
| Mega UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC Registered adviser | $16,901,542 | 0.31% | 170,516 | Shares | 2026-08-13 | |
| Large Handelsbanken Fonder AB Non-US | $16,645,221 | 0.30% | 167,930 | Shares | 2026-07-10 | |
| Large ROYCE & ASSOCIATES LP Registered adviser | $16,031,272 | 0.29% | 161,736 | Shares | 2026-08-14 | |
| Mega WELLS FARGO & COMPANY/MN Bank | $15,811,620 | 0.29% | 159,520 | Shares | 2026-08-14 | |
| Mid Zimmer Partners, LP Registered adviser | $15,809,640 | 0.29% | 159,500 | Shares | 2026-08-14 | |
| Large DekaBank Deutsche Girozentrale | $14,984,928 | 0.27% | 201,086 | Shares | 2026-10-27 | |
| Mega CITADEL ADVISORS LLC Registered adviser | $14,947,296 | 0.27% | 150,800 | Call | 2026-09-02 | |
| Large Quadrature Capital Ltd | $14,889,608 | 0.27% | 150,218 | Shares | 2026-08-07 | |
| Mega MASSACHUSETTS FINANCIAL SERVICES CO /MA/ Registered adviser | $14,153,838 | 0.26% | 142,795 | Shares | 2026-08-03 | |
| Mega CITADEL ADVISORS LLC Registered adviser | $13,975,920 | 0.25% | 141,000 | Put | 2026-09-02 | |
| Large STATE OF WISCONSIN INVESTMENT BOARD Benefit plan | $13,970,765 | 0.25% | 140,948 | Shares | 2026-08-14 | |
| Large Alyeska Investment Group, L.P. Registered adviser | $13,957,285 | 0.25% | 140,812 | Shares | 2026-08-14 | |
| Mid Penn Capital Management Company, LLC Registered adviser | $13,774,111 | 0.25% | 138,964 | Shares | 2026-07-30 | |
| Large Grantham, Mayo, Van Otterloo & Co. LLC Adviser | $13,749,331 | 0.25% | 138,714 | Shares | 2026-08-13 | |
| Mega Allianz Asset Management GmbH | $13,513,525 | 0.24% | 136,335 | Shares | 2026-09-02 | |
| Small ARDSLEY ADVISORY PARTNERS LP Registered adviser | $13,381,200 | 0.24% | 135,000 | Shares | 2026-07-13 | |
| Mid Sagefield Capital LP | $13,278,016 | 0.24% | 133,959 | Shares | 2026-08-14 | |
| Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP | $13,192,872 | 0.24% | 133,100 | Call | 2026-08-14 | |
| Mid ALGERT GLOBAL LLC Registered adviser | $13,107,529 | 0.24% | 132,239 | Shares | 2026-08-13 | |
| Large TCW GROUP INC Holding company | $12,986,999 | 0.24% | 131,023 | Shares | 2026-08-03 | |
| Mega Legal & General Group Plc | $12,756,544 | 0.23% | 128,698 | Shares | 2026-08-14 | |
| Micro 1060 Capital, LLC Exempt adviser | $12,390,000 | 0.22% | 125,000 | Shares | 2026-08-13 | |
| Large NEW YORK STATE COMMON RETIREMENT FUND | $12,010,370 | 0.22% | 121,170 | Shares | 2026-07-29 | |
| Large HRT FINANCIAL LP | $11,660,080 | 0.21% | 117,636 | Shares | 2026-08-14 | |
| Large CAPTRUST FINANCIAL ADVISORS Registered adviser | $11,549,065 | 0.21% | 116,516 | Shares | 2026-08-13 | |
| Mega PRICE T ROWE ASSOCIATES INC /MD/ Registered adviser | $10,808,143 | 0.20% | 109,041 | Shares | 2026-08-14 | |
| Mega Swiss National Bank | $10,794,168 | 0.20% | 108,900 | Shares | 2026-08-11 | |
| Large Holocene Advisors, LP Registered adviser | $10,700,697 | 0.19% | 107,957 | Shares | 2026-08-14 | |
| Mega RHUMBLINE ADVISERS Registered adviser | $10,595,630 | 0.19% | 106,897 | Shares | 2026-08-12 | |
| Mega California Public Employees Retirement System | $10,586,511 | 0.19% | 106,805 | Shares | 2026-08-14 | |
| Mega VICTORY CAPITAL MANAGEMENT INC Registered adviser | $10,372,808 | 0.19% | 104,649 | Shares | 2026-08-07 | |
| Mid Weiss Asset Management LP Registered adviser | $9,750,335 | 0.18% | 98,369 | Shares | 2026-08-14 | |
| Large Jump Financial, LLC | $9,653,594 | 0.17% | 97,393 | Shares | 2026-08-13 | |
| Mega Pictet Asset Management Holding SA | $9,435,133 | 0.17% | 95,189 | Shares | 2026-07-30 | |
| Small SIR Capital Management, L.P. | $9,281,596 | 0.17% | 93,640 | Shares | 2026-08-14 | |
| Mid Susquehanna Portfolio Strategies, LLC | $9,062,442 | 0.16% | 91,429 | Shares | 2026-08-14 | |
| Mid Covalis Capital LLP Registered adviser | $9,029,138 | 0.16% | 91,093 | Shares | 2026-08-13 | |
| Mid CenterBook Partners LP Registered adviser | $8,568,031 | 0.16% | 86,441 | Shares | 2026-08-11 | |
| Mega ROYAL BANK OF CANADA Bank | $8,367,410 | 0.15% | 84,417 | Shares | 2026-08-14 | |
| Mega JANE STREET GROUP, LLC | $8,326,080 | 0.15% | 84,000 | Put | 2026-08-14 | |
| Mid Dana Investment Advisors, Inc. Registered adviser | $8,242,620 | 0.15% | 83,158 | Shares | 2026-08-13 | |
| Mega VAN ECK ASSOCIATES CORP Registered adviser | $8,223,192 | 0.15% | 82,962 | Shares | 2026-08-14 | |
| Mega AQR CAPITAL MANAGEMENT LLC Registered adviser | $7,931,779 | 0.14% | 80,022 | Shares | 2026-08-14 |
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