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
Q2 		$586K Buy
+41,022
New +$457K ﹤0.01% 2561
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 $6.73T AUM 46.02% 1-Year Est. Return
MCO
MAK Capital One New York $714M AUM 68.07% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
PGCM
Prescott Group Capital Management Tulsa, Oklahoma $1.16B AUM 53.61% 1-Year Est. Return
Diamond Hill Capital Management
Diamond Hill Capital Management Columbus, Ohio $12.5B AUM 7.49% 1-Year Est. Return
KCM
Kennedy Capital Management St Louis, Missouri $5.65B AUM 61.31% 1-Year Est. Return
PCM
Potomac Capital Management New York $147M AUM
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
HA
Heartland Advisors Milwaukee, Wisconsin $2.25B AUM 44.61% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return

SEI Investments's PESI Position: Q2 2026 in Review

SEI Investments opened a new position in Perma-Fix Environmental Services (PESI) in Q2 2026: 41,022 shares worth $586K. The stake represents ﹤0.01% of the portfolio and ranks #2561 among its holdings. This is a return to the name: SEI Investments previously reported a position in PESI as recently as Q4 2025.

SEI Investments first reported a position in PESI in Q4 2025 and has held it in 2 quarters since. 88 funds tracked by Wall St. Rank hold PESI as of Q2 2026.

  • SEI Investments held 41,022 shares of Perma-Fix Environmental Services worth $586K as of Q2 2026.
  • Perma-Fix Environmental Services was a new SEI Investments position in Q2 2026.
  • Perma-Fix Environmental Services made up ﹤0.01% of SEI Investments's portfolio in Q2 2026, its #2561 holding.
  • SEI Investments first reported a position in Perma-Fix Environmental Services in Q4 2025 and has held it in 2 quarters since.
  • 88 funds tracked by Wall St. Rank held Perma-Fix Environmental Services as of Q2 2026.

Based on SEI Investments's 13F filing for Q2 2026, filed 14 Aug 2026.