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Of the 14 tracked institutions holding PRIM, 6 have a 3-year clone track record — 5 of them beat the S&P. Average holder's clone alpha: +4.1pt. It's a gauge of who owns the name, not just how many.
Among the 14 tracked institutional investors we monitor, PRIM (PRIMORIS SVCS CORP) is held with a combined value of $2.49B across 23,465,795 shares. The largest holder is VANGUARD GROUP INC with a position worth $804.36M (0.01% of their portfolio). 3 funds opened new positions in the most recent quarter. 4 funds increased their holdings. 7 funds reduced their position.
Total Institutional Value
$2.49B
Total Shares Held
23,465,795
Institutional Holders
14
% of Shares Outstanding
43.6%
of 53.83M shares · SEC 2026-07-31
Days to Cover
3.4+0.5%
4.51M shares short · FINRA 2026-08-14
Tracked 13F institutions hold 43.6% of PRIM's shares outstanding. This is a floor: 13F filings arrive on a ~45-day lag and we track only a subset of institutional filers, so true institutional ownership is higher. Shares-outstanding is the latest SEC cover-page figure (as of 2026-07-31), not a live float.
Ranked by estimated dollars moved (share change × implied price). 13F data lags up to 45 days.
| # | Fund | Value↓ | Portfolio % | Change |
|---|---|---|---|---|
| 1 | VANGUARD GROUP INC | $804.36M | 0.01% | +7.8% |
| 2 | BlackRock, Inc. | $677.69M | 0.01% | -18.0% |
| 3 | WELLINGTON MANAGEMENT GROUP LLP | $463.43M | 0.08% | +148.7% |
| 4 | STATE STREET CORP | $179.95M | 0.01% | -12.1% |
| 5 | MILLENNIUM MANAGEMENT LLC | $147.96M | 0.10% | +272.4% |
| 6 | Point72 Asset Management, L.P. | $86.88M | 0.13% | New |
| 7 | FMR LLC | $63.17M | 0.00% | -9.7% |
| 8 | CITADEL ADVISORS LLC | $29.97M | 0.02% | +7.1% |
| 9 | Grantham, Mayo, Van Otterloo & Co. LLC | $13.75M | 0.03% | New |
| 10 | PRICE T ROWE ASSOCIATES INC /MD/ | $10.81M | 0.00% | -84.7% |
| Member | Type | Date |
|---|---|---|
| Gilbert Cisneros | Sell | May 8, 2026 |
| Gilbert Cisneros | Sell | Feb 18, 2026 |
| Gilbert Cisneros | Sell | Dec 11, 2025 |
| Gilbert Cisneros | Sell |
As of the latest SEC 13F filings, VANGUARD GROUP INC is the largest institutional holder of PRIM with a position worth $804.36M, representing 0.01% of their portfolio. In total, 14 institutional investors hold PRIM with a combined value of $2.49B.
In the most recent quarter, 3 funds opened a new position in PRIM. Additionally, 4 increased their holdings and 7 reduced their positions.
Institutional investors hold $2.49B worth of PRIM stock across 14 positions. The largest institutional holder is VANGUARD GROUP INC with $804.36M in holdings.
A 13F filing is a quarterly report required by the SEC from institutional investment managers with over $100 million in assets. It discloses their holdings in U.S. equities. For PRIM, these filings reveal which major funds are accumulating or reducing positions, providing insights into institutional sentiment.
Get notified when hedge funds change their PRIM positions.
Alpha = the manager's 3-year clone return minus the S&P 500. A skilled roster is a stronger tell than a crowded one — though even skilled managers' edge doesn't reliably survive the 13F disclosure lag. Why →
| 2026-08-13 |
| 5.8% | 2026-07-31 |
| 11.7% | 2026-07-29 |
SEC Schedule 13D (activist) and 13G (passive) filings for PRIM. Filed when an investor acquires 5%+ ownership.
| Nov 24, 2025 |
| Gilbert Cisneros | Sell | Nov 6, 2025 |
| Josh Gottheimer | Sell | Dec 6, 2024 |
| Josh Gottheimer | Sell | Jun 27, 2024 |
| Josh Gottheimer | Sell | Jun 21, 2024 |
Showing 8 of 9. STOCK Act disclosures lag up to 45 days.
Last Close
$73.85
2026-09-09
YTD
-43.5%
1% of 52-week range
