PRIM Institutional Ownership & Shareholders
PRIMORIS SERVICES CORP (PRIM) is currently held by 420 institutional investors tracked by InsiderSet, with a combined reported market value of approximately $5.25B based on the latest available SEC Form 13F filings for the quarter ended June 30, 2026.
Blackrock, Inc. is currently the largest disclosed institutional shareholder of PRIM tracked by InsiderSet, reporting ownership valued at approximately $677.69M in its June 30, 2026 SEC Form 13F filing. Based on current market prices and the latest disclosed share count, the position is now estimated to be worth approximately $544.02M, representing an estimated loss of -19.72% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 50% of the total disclosed PRIM value among the investors covered in this analysis. Major shareholders include Blackrock, Inc., Wellington Management Group Llp, Vanguard Portfolio Management Llc, and several other long-term asset managers with concentrated positions in PRIMORIS SERVICES CORP (PRIM).
This page ranks the largest institutional PRIM shareholders using publicly disclosed SEC Form 13F data, including reported values, estimated current holding values, portfolio allocation percentages, ownership concentration metrics, and historical holding changes across major hedge funds and investment firms.
Institutional Holders
420
Total Reported Value
$5.25B
Largest Holder
Blackrock, Inc.
Largest Position
$677.69M
Insider Transactions (90d)
9
Latest Filing Quarter
Q2 2026
New Institutional Positions
51
Funds Exiting Positions
0
| Name | Investor/Manager | Portfolio % | Quantity | Reported Balance | Current Estimated Value | Gain/loss Since Filing | Estimated Portfolio Performance |
|---|---|---|---|---|---|---|---|
| Blackrock, Inc. | 0.01% | 6,837,017 | $677,685,116 | $544,021,443 | -$133,663,673 | -19.72% | |
| Wellington Management Group Llp | 0.08% | 4,675,487 | $463,434,272 | $372,028,501 | -$91,405,771 | -19.72% | |
| Vanguard Portfolio Management Llc | 0.01% | 3,123,356 | $309,587,047 | $248,525,437 | -$61,061,610 | -19.72% | |
| Vanguard Capital Management Llc | 0.00% | 2,355,491 | $233,476,268 | $187,426,419 | -$46,049,849 | -19.72% | |
| First Trust Advisors Lp | 0.13% | 2,234,728 | $221,506,239 | $177,817,307 | -$43,688,932 | -19.72% | |
| State Street Corp | 0.01% | 1,814,143 | $179,951,200 | $144,351,359 | -$35,599,841 | -19.78% | |
| Millennium Management Llc | 0.10% | 1,492,740 | $147,960,389 | $118,777,322 | -$29,183,067 | -19.72% | |
| Southpoint Capital Advisors Lp | 3.16% | 1,400,000 | $138,768,000 | $111,398,000 | -$27,370,000 | -19.72% | |
| Morgan Stanley | 0.01% | 1,284,470 | $127,316,735 | $102,205,278 | -$25,111,457 | -19.72% | |
| Dimensional Fund Advisors Lp | 0.02% | 1,184,542 | $117,405,201 | $94,254,007 | -$23,151,194 | -19.72% | |
| Geode Capital Management, Llc | 0.01% | 1,098,315 | $108,890,408 | $87,392,925 | -$21,497,483 | -19.74% | |
| American Century Companies Inc | 0.04% | 884,645 | $87,686,158 | $70,391,203 | -$17,294,955 | -19.72% | |
| Point72 Asset Management, L.P. | 0.13% | 876,484 | $86,877,094 | $69,741,832 | -$17,135,262 | -19.72% | |
| Nordea Investment Management Ab | 0.07% | 887,332 | $86,195,430 | $70,605,007 | -$15,590,423 | -18.09% | |
| Invesco Ltd. | 0.01% | 847,692 | $84,023,232 | $67,450,852 | -$16,572,380 | -19.72% | |
| Westfield Capital Management Co Lp | 0.24% | 737,493 | $73,100,306 | $58,682,318 | -$14,417,988 | -19.72% | |
| Fmr Llc | 0.00% | 637,265 | $63,165,726 | $50,707,176 | -$12,458,550 | -19.72% | |
| Charles Schwab Investment Management Inc | 0.01% | 554,587 | $54,970,663 | $44,128,488 | -$10,842,175 | -19.72% | |
| Ubs Group Ag | 0.01% | 544,654 | $53,986,105 | $43,338,119 | -$10,647,986 | -19.72% | |
| Norges Bank | 0.01% | 517,320 | $51,276,758 | $41,163,152 | -$10,113,606 | -19.72% | |
| Van Berkom & Associates Inc. | 1.63% | 509,157 | $50,468,000 | $40,513,622 | -$9,954,378 | -19.72% | |
| Frontier Capital Management Co Llc | 0.43% | 468,762 | $46,463,733 | $37,299,392 | -$9,164,341 | -19.72% | |
| Nuveen, Llc | 0.01% | 462,954 | $45,887,908 | $36,837,250 | -$9,050,658 | -19.72% | |
| Madison Avenue Partners, Lp | 1.97% | 462,058 | $45,799,189 | $36,765,955 | -$9,033,234 | -19.72% | |
| Federated Hermes, Inc. | 0.06% | 445,283 | $44,136,455 | $35,431,168 | -$8,705,287 | -19.72% | |
| Mirae Asset Global Etfs Holdings Ltd. | 0.05% | 431,182 | $42,737,605 | $34,309,152 | -$8,428,453 | -19.72% | |
| Goldman Sachs Group Inc | 0.00% | 430,630 | $42,684,049 | $34,265,229 | -$8,418,820 | -19.72% | |
| Electron Capital Partners, Llc | 1.64% | 415,103 | $41,145,010 | $33,029,746 | -$8,115,264 | -19.72% | |
| William Blair Investment Management, Llc | 0.12% | 399,966 | $39,644,630 | $31,825,295 | -$7,819,335 | -19.72% | |
| Value Holdings Management Co. Llc | 6.62% | 399,443 | $39,593,000 | $31,783,680 | -$7,809,320 | -19.72% | |
| Jpmorgan Chase & Co | 0.00% | 403,699 | $39,497,137 | $32,122,329 | -$7,374,808 | -18.67% | |
| Cooper Creek Partners Management Llc | 1.61% | 388,858 | $38,544,000 | $30,941,431 | -$7,602,569 | -19.72% | |
| Bruni J V & Co | 3.45% | 380,845 | $37,749,356 | $30,303,837 | -$7,445,519 | -19.72% | |
| Yaupon Capital Management Lp | 1.21% | 366,972 | $36,374,265 | $29,199,962 | -$7,174,303 | -19.72% | |
| Vanguard Fiduciary Trust Co | 0.01% | 341,084 | $33,808,246 | $27,140,054 | -$6,668,192 | -19.72% | |
| Vontobel Holding Ltd. | 0.13% | 452,306 | $33,705,843 | $35,989,988 | +$2,284,145 | +6.78% | |
| Bank Of New York Mellon Corp | 0.01% | 322,562 | $31,972,361 | $25,666,258 | -$6,306,103 | -19.72% | |
| Northern Trust Corp | 0.00% | 319,977 | $31,716,121 | $25,460,570 | -$6,255,551 | -19.72% | |
| Citadel Advisors Llc | 0.02% | 302,368 | $29,970,716 | $24,059,422 | -$5,911,294 | -19.72% | |
| Schroder Investment Management Group | 0.02% | 303,302 | $29,468,822 | $24,133,740 | -$5,335,082 | -18.10% | |
| Marshall Wace, Llp | 0.02% | 294,605 | $29,201,248 | $23,441,720 | -$5,759,528 | -19.72% | |
| Jacobs Levy Equity Management, Inc | 0.10% | 281,166 | $27,869,174 | $22,372,379 | -$5,496,795 | -19.72% | |
| Hennessy Advisors Inc | 1.03% | 368,400 | $27,453,168 | $29,313,588 | +$1,860,420 | +6.78% | |
| Canada Pension Plan Investment Board | 0.01% | 248,068 | $24,588,500 | $19,738,771 | -$4,849,729 | -19.72% | |
| Merewether Investment Management, Lp | 0.40% | 211,913 | $21,004,817 | $16,861,917 | -$4,142,900 | -19.72% | |
| Ameriprise Financial Inc | 0.00% | 209,065 | $20,721,411 | $16,635,302 | -$4,086,109 | -19.72% | |
| Susquehanna International Group, Llp | 0.02% | 206,405 | $20,458,864 | $16,423,646 | -$4,035,218 | -19.72% | |
| Public Sector Pension Investment Board | 0.05% | 204,804 | $20,300,172 | $16,296,254 | -$4,003,918 | -19.72% | |
| Mackenzie Financial Corp | 0.02% | 264,115 | $19,681,850 | $21,015,631 | +$1,333,781 | +6.78% | |
| Engine Capital Management, Lp | 1.89% | 195,838 | $19,411,463 | $15,582,830 | -$3,828,633 | -19.72% |
Frequently asked questions about PRIM
Who are the largest institutional holders of PRIM?
The largest institutional holders of PRIM reported in the latest SEC Form 13F filings include Blackrock, Inc., Wellington Management Group Llp, Vanguard Portfolio Management Llc, Vanguard Capital Management Llc, and First Trust Advisors Lp. InsiderSet ranks institutional holders by their latest reported PRIM position.
What is PRIM institutional ownership?
This page tracks PRIM positions reported by institutional investment managers through SEC Form 13F. PRIMORIS SERVICES CORP (PRIM) institutional ownership on InsiderSet reflects disclosed 13F holdings among the managers we analyze, not every shareholder of the stock.
How many institutions own PRIM?
InsiderSet currently tracks 420 institutional managers reporting PRIM holdings in the latest available 13F data. This count reflects institutions included in the SEC Form 13F filings analyzed by InsiderSet and should not be interpreted as the total number of PRIM shareholders.
How much PRIM stock do institutions own?
Institutional investment managers disclosed approximately $5.25B in PRIM holdings for Q2 2026. This figure is reported 13F value as of the filing period, not necessarily today's market value.
When was PRIM institutional ownership last updated?
The latest PRIM institutional ownership data on InsiderSet is based on SEC Form 13F filings for the quarter ended June 30, 2026. Form 13F filings are generally reported after the quarter ends, so the holdings shown represent the latest publicly disclosed positions rather than real-time institutional holdings.
Are institutional PRIM holdings real-time?
No. Form 13F data is not real-time. It represents positions reported by institutional investment managers as of the end of the reporting quarter. An institution may have changed its PRIM position after the reporting date.
Are institutions buying or selling PRIM?
Institutional buying and selling can be analyzed by comparing PRIM positions across consecutive 13F reporting periods. InsiderSet's PRIM Ownership Changes page shows institutions that increased, reduced, initiated, or exited positions based on reported 13F holdings. View PRIM ownership changes.
How has PRIM institutional ownership changed over time?
InsiderSet tracks PRIM institutional holdings across multiple 13F reporting periods, allowing investors to compare institutional holder counts, reported value, and reported shares over time.