William Blair & Company
PRIM icon

William Blair & Company’s Primoris Services PRIM Stock Holding History

William Blair & Company’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 		$491K Sell
4,953
-177
-3% -$23.3K ﹤0.01% 1241
2026
Q1 		$734K Sell
5,130
-12,359
-71% -$1.81M ﹤0.01% 1033
2025
Q4 		$2.17M Buy
17,489
+3,850
+28% +$503K 0.01% 723
2025
Q3 		$1.87M Buy
13,639
+9,720
+248% +$1.04M 0.01% 747
2025
Q2 		$305K Buy
+3,919
New +$266K ﹤0.01% 1255

Other funds holding PRIM

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Wellington Management Group
Wellington Management Group Boston, Massachusetts $580B AUM 38.23% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
First Trust Advisors
First Trust Advisors Wheaton, Illinois $170B AUM 46.21% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Millennium Management
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
Morgan Stanley New York $1.89T AUM 35.08% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 1-Year Est. Return

William Blair & Company's PRIM Position: Q2 2026 in Review

William Blair & Company reduced its Primoris Services (PRIM) stake by 3.5% in Q2 2026, selling an estimated $23.3K and leaving 4,953 shares worth $491K. The position accounts for ﹤0.01% of the portfolio, ranked #1241.

William Blair & Company first reported a position in PRIM in Q2 2025 and has held it in 5 quarters since. The position peaked at $2.17M in Q4 2025. 449 funds tracked by Wall St. Rank hold PRIM as of Q2 2026.

  • William Blair & Company held 4,953 shares of Primoris Services worth $491K as of Q2 2026.
  • William Blair & Company sold 177 Primoris Services shares in Q2 2026, an estimated $23.3K.
  • Primoris Services made up ﹤0.01% of William Blair & Company's portfolio in Q2 2026, its #1241 holding.
  • William Blair & Company first reported a position in Primoris Services in Q2 2025 and has held it in 5 quarters since.
  • William Blair & Company's Primoris Services position peaked at $2.17M in Q4 2025.
  • 449 funds tracked by Wall St. Rank held Primoris Services as of Q2 2026.

Based on William Blair & Company's 13F filing for Q2 2026, filed 11 Aug 2026.