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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
Q2 		– Sell
-35,887
Closed -$35.7K – 1725
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

Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
CFM
Compass Financial Management Tampa, Florida $829M AUM
Millennium Management
Millennium Management New York $276B AUM 44.8% 1-Year Est. Return
Acadian Asset Management
Acadian Asset Management Boston, Massachusetts $84.2B AUM 55.88% 1-Year Est. Return
BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Renaissance Technologies
Renaissance Technologies New York $72.6B AUM 54.88% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
Two Sigma Investments
Two Sigma Investments New York $138B AUM 41.87% 1-Year Est. Return
GS
Gagnon Securities New York $519M AUM 44.91% 1-Year Est. Return
Vanguard Fiduciary Trust
Vanguard Fiduciary Trust Malvern, Pennsylvania $454B AUM

Two Sigma Securities's ATNM Position: Q2 2026 in Review

Two Sigma Securities sold out of Actinium Pharmaceuticals (ATNM) in Q2 2026, closing a stake of 35,887 shares — an estimated $35.7K sold.

Two Sigma Securities first reported a position in ATNM in Q3 2016 and held it in 16 quarters. The position peaked at $61K in Q2 2022. 47 funds tracked by Wall St. Rank hold ATNM as of Q2 2026.

  • Two Sigma Securities reported no remaining Actinium Pharmaceuticals position as of Q2 2026 after selling out during the quarter.
  • Two Sigma Securities sold 35,887 Actinium Pharmaceuticals shares in Q2 2026, an estimated $35.7K.
  • Two Sigma Securities first reported a position in Actinium Pharmaceuticals in Q3 2016 and held it in 16 quarters.
  • Two Sigma Securities's Actinium Pharmaceuticals position peaked at $61K in Q2 2022.
  • 47 funds tracked by Wall St. Rank held Actinium Pharmaceuticals as of Q2 2026.

Based on Two Sigma Securities's 13F filing for Q2 2026, filed 14 Aug 2026.