XT
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XTX Topco’s Actinium Pharmaceuticals ATNM Stock Holding History

XTX Topco’s Portfolio ATNM Stock Details ATNM Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q1 		$30.1K Buy
30,210
+4,234
+16% +$5.04K ﹤0.01% 3451
2025
Q4 		$35.3K Buy
25,976
+6,015
+30% +$8.78K ﹤0.01% 2917
2025
Q3 		$31.9K Buy
19,961
+6,712
+51% +$10.9K ﹤0.01% 2252
2025
Q2 		$18.5K Buy
+13,249
New +$19.8K ﹤0.01% 2177
2025
Q1 		– Sell
-25,606
Closed -$32.3K – 2400
2024
Q4 		$32.3K Sell
25,606
-116,887
-82% -$181K ﹤0.01% 1969
2024
Q3 		$268K Buy
+142,493
New +$563K 0.02% 1264

Other funds holding ATNM

VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
Acadian Asset Management
Acadian Asset Management Boston, Massachusetts $70.5B AUM 36% 1-Year Est. Return
Millennium Management
Millennium Management New York $240B AUM 35.51% 1-Year Est. Return
Renaissance Technologies
Renaissance Technologies New York $63.9B AUM 45.56% 1-Year Est. Return
BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
Two Sigma Investments
Two Sigma Investments New York $124B AUM 33.93% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return
GS
Gagnon Securities New York $433M AUM 29.08% 1-Year Est. Return
VFT
Vanguard Fiduciary Trust Malvern, Pennsylvania $396B AUM
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return

XTX Topco's ATNM Position: Q1 2026 in Review

XTX Topco increased its Actinium Pharmaceuticals (ATNM) stake by 16% in Q1 2026, buying an estimated $5.04K and bringing the position to 30,210 shares worth $30.1K. The position accounts for ﹤0.01% of the portfolio, ranked #3451.

XTX Topco first reported a position in ATNM in Q3 2024 and has held it in 6 quarters since. The position peaked at $268K in Q3 2024. 54 funds tracked by Wall St. Rank hold ATNM as of Q1 2026.

  • XTX Topco held 30,210 shares of Actinium Pharmaceuticals worth $30.1K as of Q1 2026.
  • XTX Topco bought 4,234 Actinium Pharmaceuticals shares in Q1 2026, an estimated $5.04K.
  • Actinium Pharmaceuticals made up ﹤0.01% of XTX Topco's portfolio in Q1 2026, its #3451 holding.
  • XTX Topco first reported a position in Actinium Pharmaceuticals in Q3 2024 and has held it in 6 quarters since.
  • XTX Topco's Actinium Pharmaceuticals position peaked at $268K in Q3 2024.
  • 54 funds tracked by Wall St. Rank held Actinium Pharmaceuticals as of Q1 2026.

Based on XTX Topco's 13F filing for Q1 2026, filed 15 May 2026.