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Two Sigma Securities’s Actinium Pharmaceuticals ATNM Stock Holding History

Two Sigma Securities’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 		$35.7K Buy
35,887
+22,922
+177% +$27.3K ﹤0.01% 1303
2025
Q4 		$17.6K Buy
+12,965
New +$18.9K ﹤0.01% 1199
2022
Q3 		– Sell
-12,624
Closed -$61K – 2590
2022
Q2 		$61K Buy
+12,624
New +$71.7K ﹤0.01% 1821
2020
Q3 		– Sell
-1,242
Closed -$13K – 1291
2020
Q2 		$13K Buy
1,242
+785
+172% +$5.95K ﹤0.01% 1304
2020
Q1 		$3K Buy
457
+81
+22% +$575 ﹤0.01% 1270
2019
Q4 		$2K Buy
+376
New +$2.6K ﹤0.01% 2287
2019
Q3 		– Sell
-878
Closed -$6K – 2045
2019
Q2 		$6K Buy
878
+393
+81% +$3.95K ﹤0.01% 2019
2019
Q1 		$7K Sell
485
-210
-30% -$3.35K ﹤0.01% 1740
2018
Q4 		$8K Sell
695
-513
-42% -$8.75K ﹤0.01% 2034
2018
Q3 		$27K Buy
1,208
+826
+216% +$16.8K ﹤0.01% 2405
2018
Q2 		$7K Buy
+382
New +$4.84K ﹤0.01% 2595
2018
Q1 		– Sell
-692
Closed -$14K – 2661
2017
Q4 		$14K Buy
692
+100
+17% +$2.01K ﹤0.01% 1654
2017
Q3 		$10K Buy
+592
New +$13K ﹤0.01% 867
2017
Q2 		– Sell
-433
Closed -$20K – 857
2017
Q1 		$20K Sell
433
-700
-62% -$26.9K ﹤0.01% 842
2016
Q4 		$30K Buy
1,133
+709
+167% +$22.2K 0.01% 630
2016
Q3 		$17K Buy
+424
New +$21.8K 0.01% 610

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

Two Sigma Securities's ATNM Position: Q1 2026 in Review

Two Sigma Securities increased its Actinium Pharmaceuticals (ATNM) stake by 177% in Q1 2026, buying an estimated $27.3K and bringing the position to 35,887 shares worth $35.7K. The position accounts for ﹤0.01% of the portfolio, ranked #1303.

Two Sigma Securities first reported a position in ATNM in Q3 2016 and has held it in 16 quarters since. The position peaked at $61K in Q2 2022. 54 funds tracked by Wall St. Rank hold ATNM as of Q1 2026.

  • Two Sigma Securities held 35,887 shares of Actinium Pharmaceuticals worth $35.7K as of Q1 2026.
  • Two Sigma Securities bought 22,922 Actinium Pharmaceuticals shares in Q1 2026, an estimated $27.3K.
  • Actinium Pharmaceuticals made up ﹤0.01% of Two Sigma Securities's portfolio in Q1 2026, its #1303 holding.
  • Two Sigma Securities first reported a position in Actinium Pharmaceuticals in Q3 2016 and has held it in 16 quarters since.
  • Two Sigma Securities's Actinium Pharmaceuticals position peaked at $61K in Q2 2022.
  • 54 funds tracked by Wall St. Rank held Actinium Pharmaceuticals as of Q1 2026.

Based on Two Sigma Securities's 13F filing for Q1 2026, filed 15 May 2026.