XT
PESI icon

XTX Topco’s Perma-Fix Environmental Services PESI Stock Holding History

XTX Topco’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 		$899K Buy
62,888
+39,661
+171% +$442K 0.01% 1887
2026
Q1 		$248K Buy
+23,227
New +$319K ﹤0.01% 2655
2025
Q3 		– Sell
-18,956
Closed -$199K – 3100
2025
Q2 		$199K Buy
+18,956
New +$174K 0.01% 1707

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

XTX Topco's PESI Position: Q2 2026 in Review

XTX Topco increased its Perma-Fix Environmental Services (PESI) stake by 171% in Q2 2026, buying an estimated $442K and bringing the position to 62,888 shares worth $899K. The position accounts for 0.01% of the portfolio, ranked #1887.

XTX Topco first reported a position in PESI in Q2 2025 and has held it in 3 quarters since. 89 funds tracked by Wall St. Rank hold PESI as of Q2 2026.

  • XTX Topco held 62,888 shares of Perma-Fix Environmental Services worth $899K as of Q2 2026.
  • XTX Topco bought 39,661 Perma-Fix Environmental Services shares in Q2 2026, an estimated $442K.
  • Perma-Fix Environmental Services made up 0.01% of XTX Topco's portfolio in Q2 2026, its #1887 holding.
  • XTX Topco first reported a position in Perma-Fix Environmental Services in Q2 2025 and has held it in 3 quarters since.
  • 89 funds tracked by Wall St. Rank held Perma-Fix Environmental Services as of Q2 2026.

Based on XTX Topco's 13F filing for Q2 2026, filed 14 Aug 2026.