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Portolan Capital Management’s Primoris Services PRIM Stock Holding History

Portolan Capital Management’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 		– Sell
-130,626
Closed -$18.7M – 166
2026
Q1 		$18.7M Buy
130,626
+24,910
+24% +$3.65M 0.99% 34
2025
Q4 		$13.1M Sell
105,716
-43,525
-29% -$5.68M 0.7% 48
2025
Q3 		$20.5M Buy
149,241
+49,792
+50% +$5.35M 1.11% 29
2025
Q2 		$7.75M Buy
99,449
+89,209
+871% +$6.05M 0.49% 65
2025
Q1 		$588K Sell
10,240
-97,002
-90% -$7.01M 0.04% 106
2024
Q4 		$8.19M Sell
107,242
-55,848
-34% -$4.08M 0.55% 65
2024
Q3 		$9.47M Buy
163,090
+36,548
+29% +$1.95M 0.69% 52
2024
Q2 		$6.31M Buy
+126,542
New +$6.26M 0.52% 72

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

Portolan Capital Management's PRIM Position: Q2 2026 in Review

Portolan Capital Management sold out of Primoris Services (PRIM) in Q2 2026, closing a stake of 130,626 shares — an estimated $18.7M sold.

Portolan Capital Management first reported a position in PRIM in Q2 2024 and held it in 8 quarters. The position peaked at $20.5M in Q3 2025. 449 funds tracked by Wall St. Rank hold PRIM as of Q2 2026.

  • Portolan Capital Management reported no remaining Primoris Services position as of Q2 2026 after selling out during the quarter.
  • Portolan Capital Management sold 130,626 Primoris Services shares in Q2 2026, an estimated $18.7M.
  • Portolan Capital Management first reported a position in Primoris Services in Q2 2024 and held it in 8 quarters.
  • Portolan Capital Management's Primoris Services position peaked at $20.5M in Q3 2025.
  • 449 funds tracked by Wall St. Rank held Primoris Services as of Q2 2026.

Based on Portolan Capital Management's 13F filing for Q2 2026, filed 14 Aug 2026.