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PRIM Institutional Ownership & 13F Holders | SmartMoneyDB

PRIMPRIMORIS SVCS CORP

COM · CUSIP 74164F103

Smart Money Ownership

Of the 13 tracked institutions holding PRIM, 7 have a 3-year clone track record — 6 of them beat the S&P. Average holder's clone alpha: +4.2pt. It's a gauge of who owns the name, not just how many.

PRICE T ROWE ASSOCIATES INC /MD/

$102.2M

+2.7pt

PRIM (PRIMORIS SVCS CORP) Institutional Ownership Summary

Among the 13 tracked institutional investors we monitor, PRIM (PRIMORIS SVCS CORP) is held with a combined value of $2.91B across 21,194,566 shares. The largest holder is BlackRock, Inc. with a position worth $1.19B (0.02% of their portfolio). ADAGE CAPITAL PARTNERS GP, L.L.C. opened a new position in the most recent quarter. 8 funds increased their holdings. 4 funds reduced their position.

Total Institutional Value

$2.91B

Total Shares Held

21,194,566

Institutional Holders

% of Shares Outstanding

39.1%

of 54.25M shares · SEC 2026-05-01

Days to Cover

2.4-1.7%

2.99M shares short · FINRA 2026-07-15

Tracked 13F institutions hold 39.1% 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 2026-05-01), not a live float.

This Quarter's Biggest Movers

Ranked by estimated dollars moved (share change × implied price). 13F data lags up to 45 days.

Biggest Buyers

VANGUARD GROUP INC+8% shares~$58.2M MILLENNIUM MANAGEMENT LLC+22583% shares~$57.1M PRICE T ROWE ASSOCIATES INC /MD/+34% shares~$25.8M CITADEL ADVISORS LLC+105% shares~$20.7M WELLINGTON MANAGEMENT GROUP LLP+8% shares~$19.0M

13F Institutional Holders

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WELLINGTON MANAGEMENT GROUP LLP

0.05% of book+7.6%

$268.86M

PRICE T ROWE ASSOCIATES INC /MD/

MILLENNIUM MANAGEMENT LLC

0.02% of book+22582.7%

Bridgewater Associates, LP

0.09% of book+35.1%

$19.48M

AQR CAPITAL MANAGEMENT LLC

0.01% of book-25.4%

$16.03M

#	Fund	Value↓	Shares	Portfolio %	Change
1	BlackRock, Inc.	$1.19B	8,340,660	0.02%	+0.5%
2	VANGUARD GROUP INC	$804.36M	6,479,466	0.01%	+7.8%
3	STATE STREET CORP	$295.33M	2,063,531	0.01%	+2.6%
4	WELLINGTON MANAGEMENT GROUP LLP	$268.86M	1,879,600	0.05%	+7.6%
5	PRICE T ROWE ASSOCIATES INC /MD/	$102.21M	714,521	0.01%	+33.7%
6	FMR LLC	$100.99M	705,992	0.01%	-1.1%
7	MILLENNIUM MANAGEMENT LLC	$57.33M	400,804	0.02%	+22582.7%
8	CITADEL ADVISORS LLC	$40.40M	282,418	0.03%	+104.9%
9	Bridgewater Associates, LP	$19.48M	136,170	0.09%	+35.1%
10	AQR CAPITAL MANAGEMENT LLC	$16.03M	112,054	0.01%	-25.4%

Congress Trading

3 members · 9 disclosed trades in PRIM

Member	Type	Amount	Date
Gilbert Cisneros	Sell	$1,001 - $15,000	May 8, 2026
Gilbert Cisneros	Sell	$1,001 - $15,000	Feb 18, 2026
Gilbert Cisneros	Sell	$1,001 - $15,000	Dec 11, 2025
Gilbert Cisneros	Sell	$1,001 - $15,000

Frequently Asked Questions

Which institutional investors own the most PRIM stock?

As of the latest SEC 13F filings, BlackRock, Inc. is the largest institutional holder of PRIM with a position worth $1.19B, representing 0.02% of their portfolio. In total, 13 institutional investors hold PRIM with a combined value of $2.91B.

Are hedge funds buying or selling PRIM?

In the most recent quarter, 1 fund opened a new position in PRIM. Additionally, 8 increased their holdings and 4 reduced their positions.

What percentage of PRIM is owned by institutional investors?

Institutional investors hold $2.91B worth of PRIM stock across 13 positions. The largest institutional holder is BlackRock, Inc. with $1.19B in holdings.

What is a 13F filing and why does it matter for PRIM?

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.

Track PRIM institutional moves

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