Ardsley Advisory Partners’s Primoris Services PRIM Stock Holding History

Ardsley Advisory Partners’s Portfolio PRIM Stock Details PRIM Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q2	$13.4M	Buy	+135,000	New	+$17.7M	1.39%	18
2025 Q2	–	Sell	-35,000	Closed	-$2.01M	–	196
2025 Q1	$2.01M	Buy	+35,000	New	+$2.53M	0.38%	82
2024 Q3	–	Sell	-38,000	Closed	-$1.9M	–	171
2024 Q2	$1.9M	Buy	38,000 +10,500	+38%	+$520K	0.28%	76
2024 Q1	$1.17M	Sell	27,500 -58,100	-68%	-$2.14M	0.17%	88
2023 Q4	$2.84M	Buy	85,600 +39,100	+84%	+$1.22M	0.44%	55
2023 Q3	$1.52M	Sell	46,500 -36,250	-44%	-$1.19M	0.34%	70
2023 Q2	$2.52M	Buy	82,750 +72,750	+728%	+$1.95M	0.43%	56
2023 Q1	$247K	Buy	+10,000	New	+$253K	0.05%	88
2021 Q3	–	Sell	-25,000	Closed	-$736K	–	152
2021 Q2	$736K	Buy	+25,000	New	+$807K	0.09%	102
2015 Q4	–	Sell	-25,000	Closed	-$448K	–	181
2015 Q3	$448K	Sell	25,000 -121,000	-83%	-$2.18M	0.11%	89
2015 Q2	$2.89M	Buy	146,000 +91,000	+165%	+$1.74M	0.36%	51
2015 Q1	$945K	Buy	+55,000	New	+$1.07M	0.13%	83
2013 Q4	–	Sell	-77,100	Closed	-$1.97M	–	191
2013 Q3	$1.97M	Buy	77,100 +47,200	+158%	+$1.07M	0.4%	47
2013 Q2	$590K	Buy	+29,900	New	+$635K	0.13%	76

Other funds holding PRIM

BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return

Wellington Management Group Boston, Massachusetts $580B AUM 38.23% 1-Year Est. Return

Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM

Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM

First Trust Advisors Wheaton, Illinois $170B AUM 46.21% 1-Year Est. Return

State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return

Millennium Management New York $276B AUM 44.8% 1-Year Est. Return

SCA

Southpoint Capital Advisors New York $4.4B AUM 49.36% 1-Year Est. Return

Morgan Stanley New York $1.89T AUM 35.08% 1-Year Est. Return

Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 1-Year Est. Return

Ardsley Advisory Partners's PRIM Position: Q2 2026 in Review

Ardsley Advisory Partners opened a new position in Primoris Services (PRIM) in Q2 2026: 135,000 shares worth $13.4M. The stake represents 1.39% of the portfolio and ranks #18 among its holdings. This is a return to the name: Ardsley Advisory Partners previously reported a position in PRIM as recently as Q1 2025.

Ardsley Advisory Partners first reported a position in PRIM in Q2 2013 and has held it in 14 quarters since. 449 funds tracked by Wall St. Rank hold PRIM as of Q2 2026.

Ardsley Advisory Partners held 135,000 shares of Primoris Services worth $13.4M as of Q2 2026.
Primoris Services was a new Ardsley Advisory Partners position in Q2 2026.
Primoris Services made up 1.39% of Ardsley Advisory Partners's portfolio in Q2 2026, its #18 holding.
Ardsley Advisory Partners first reported a position in Primoris Services in Q2 2013 and has held it in 14 quarters since.
449 funds tracked by Wall St. Rank held Primoris Services as of Q2 2026.

Based on Ardsley Advisory Partners's 13F filing for Q2 2026, filed 13 Jul 2026.