SEI Investments
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SEI Investments’s Perma-Fix Environmental Services PESI Stock Holding History

SEI Investments’s Portfolio PESI Stock Details PESI Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q1 		– Sell
-39,442
Closed -$497K – 3305
2025
Q4 		$497K Buy
+39,442
New +$503K ﹤0.01% 2509

Other funds holding PESI

BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
MCO
MAK Capital One New York $679M AUM 29.02% 1-Year Est. Return
PGCM
Prescott Group Capital Management Tulsa, Oklahoma $1B AUM 51.95% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return
HA
Heartland Advisors Milwaukee, Wisconsin $1.96B AUM 28.26% 1-Year Est. Return
Diamond Hill Capital Management
Diamond Hill Capital Management Columbus, Ohio $16B AUM 4.15% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
PCM
Potomac Capital Management New York $115M AUM
Group One Trading
Group One Trading Chicago, Illinois $52.2B AUM 104.56% 1-Year Est. Return

SEI Investments's PESI Position: Q1 2026 in Review

SEI Investments sold out of Perma-Fix Environmental Services (PESI) in Q1 2026, closing a stake of 39,442 shares — an estimated $497K sold.

SEI Investments first reported a position in PESI in Q4 2025 and held it in 1 quarter. The position peaked at $497K in Q4 2025. 85 funds tracked by Wall St. Rank hold PESI as of Q1 2026.

  • SEI Investments reported no remaining Perma-Fix Environmental Services position as of Q1 2026 after selling out during the quarter.
  • SEI Investments sold 39,442 Perma-Fix Environmental Services shares in Q1 2026, an estimated $497K.
  • SEI Investments first reported a position in Perma-Fix Environmental Services in Q4 2025 and held it in 1 quarter.
  • SEI Investments's Perma-Fix Environmental Services position peaked at $497K in Q4 2025.
  • 85 funds tracked by Wall St. Rank held Perma-Fix Environmental Services as of Q1 2026.

Based on SEI Investments's 13F filing for Q1 2026, filed 13 May 2026.