TWO SIGMA INVESTMENTS, LP

Position in ATNM — Actinium Pharmaceuticals, Inc.

CIK 1179392 NEW YORK, NY

Position in ATNM

as of Mar 31, 2026 · filed May 15, 2026 Compact

Position Value

$335,482

+$50,301 QoQ

Shares Held

337,168

+60.8% QoQ

Ownership

1.07%

of shares outstanding

% of Portfolio

0.00%

of 13F equity value

Holder Rank

—

not a current holder

Holding Since

Jun 2022

9 quarters on record

Voting authority Sole 98% Shared 0% None 2%

Healthcare · as of Mar 31, 2026

TWO SIGMA INVESTMENTS, LP holds $5,506,832,621 across 316 Biotechnology names. ATNM ranks #244 (0.0% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	ALNY	Alnylam Pharmaceuticals, Inc.	1,992,577	$659,283,951
2	REGN	Regeneron Pharmaceuticals, Inc.	812,236	$627,566,023
3	MRNA	Moderna, Inc.	9,086,404	$461,589,323
4	IONS	Ionis Pharmaceuticals Inc	5,857,629	$439,849,361
5	BBIO	BridgeBio Pharma, Inc.	3,120,631	$231,738,058
6	VRTX	Vertex Pharmaceuticals Inc / Ma	378,146	$168,857,314
7	RVMD	Revolution Medicines, Inc.	1,558,807	$151,593,980
8	VKTX	Viking Therapeutics, Inc.	4,432,142	$144,221,900

9 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-03-31	$335,482	337,168	+60.8%	Shares	Sole	2026-05-15
2025-12-31	$285,181	209,692	-10.5%	Shares	Sole	2026-02-17
2025-09-30	$374,868	234,293	+403.4%	Shares	Sole	2025-11-14
2025-06-30	$65,163	46,545	+139.1%	Shares	Sole	2025-08-14
2023-06-30	$144,452	19,468	-57.3%	Shares	Sole	2023-08-14
2023-03-31	$430,381	45,543	-78.7%	Shares	Sole	2023-05-15
2022-12-31	$2,271,858	213,320	+1247.9%	Shares	Sole	2023-02-14
2022-09-30	$116,795	15,826	-72.3%	Shares	Sole	2022-11-14
2022-06-30	$275,218	57,218	—	Shares	Sole	2022-08-15
No filing history on record for this holder in this stock.