PCM
SEI

Portolan Capital Management’s Solaris Energy Infrastructure SEI Stock Holding History

Portolan Capital Management’s Portfolio SEI Stock Details SEI Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q1 		$1.58M Buy
27,930
+8,456
+43% +$457K 0.08% 130
2025
Q4 		$895K Sell
19,474
-343,966
-95% -$16.6M 0.05% 143
2025
Q3 		$14.5M Buy
+363,440
New +$11.4M 0.79% 41

Other funds holding SEI

BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
Millennium Management
Millennium Management New York $240B AUM 35.51% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
VanEck Associates
VanEck Associates New York $133B AUM 72.99% 1-Year Est. Return
Two Sigma Investments
Two Sigma Investments New York $124B AUM 33.93% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return
ECA
Encompass Capital Advisors New York $3.34B AUM 167.64% 1-Year Est. Return
SPPAM
Summit Partners Public Asset Management Boston, Massachusetts $3.72B AUM 162.29% 1-Year Est. Return
Morgan Stanley
Morgan Stanley New York $1.66T AUM 25.57% 1-Year Est. Return
DCM
Driehaus Capital Management Chicago, Illinois $13.6B AUM 173.98% 1-Year Est. Return

Portolan Capital Management's SEI Position: Q1 2026 in Review

Portolan Capital Management increased its Solaris Energy Infrastructure (SEI) stake by 43% in Q1 2026, buying an estimated $457K and bringing the position to 27,930 shares worth $1.58M. The position accounts for 0.08% of the portfolio, ranked #130.

Portolan Capital Management first reported a position in SEI in Q3 2025 and has held it in 3 quarters since. The position peaked at $14.5M in Q3 2025. 363 funds tracked by Wall St. Rank hold SEI as of Q1 2026.

  • Portolan Capital Management held 27,930 shares of Solaris Energy Infrastructure worth $1.58M as of Q1 2026.
  • Portolan Capital Management bought 8,456 Solaris Energy Infrastructure shares in Q1 2026, an estimated $457K.
  • Solaris Energy Infrastructure made up 0.08% of Portolan Capital Management's portfolio in Q1 2026, its #130 holding.
  • Portolan Capital Management first reported a position in Solaris Energy Infrastructure in Q3 2025 and has held it in 3 quarters since.
  • Portolan Capital Management's Solaris Energy Infrastructure position peaked at $14.5M in Q3 2025.
  • 363 funds tracked by Wall St. Rank held Solaris Energy Infrastructure as of Q1 2026.

Based on Portolan Capital Management's 13F filing for Q1 2026, filed 15 May 2026.