Institutional HoldersBeta

Who holds a company, from every 13F filed for the quarter, one row per filer exactly as filed, against the latest share count the company reported.

Actinium Pharmaceuticals, Inc.

CIK 0001388320ATNM· quarter ending 2026-06-30

Shares outstanding

31,441,436

as of 2026-08-06 · 10-Q cover page, filed 2026-08-07

Held by 13F filers

5,290,769

16.8% of shares outstanding

Holders

-7 vs 2026-03-31 · 6 new, 13 exited

Value

$5.2M

shares -0.2% vs prior quarter

Share classes (cover page of the 10-Q filed 2026-08-07, as of 2026-08-06)

Class	Listed	Shares outstanding	Held by 13F filers	% of class	Holders	CUSIP
Common stock	ATNM · NYSEAMER	31,441,436	5,290,769	16.8%	47	00507W206

Each class is compared with its own share count; classes are not added together. A class that is not exchange-listed cannot be held by 13F filers.

Securities (CUSIPs held in 13F this quarter)

tick to combine

Count	CUSIP	Class (as filers write it)	Holders	Shares held	Class shares	% of class	Value	Options	Mapped via
	00507W206	COM	47	5,290,769	31,441,436	16.8%	$5.2M	1 call / 0 put	13DG	holders →

Totals combine the ticked CUSIPs and update as you tick: common-stock classes by default; preferreds, notes, warrants and depositary shares are listed but not counted. "holders →" shows a single CUSIP on its own. Bonds are held as a principal amount, not shares. Options positions are never counted as holdings.

Top holders (47 of 47 · 00507W206)

change vs 2026-03-31

#	Filer	Shares	% of class	Value	Change
1	VANGUARD CAPITAL MANAGEMENT LLC	1,238,302	3.94%	$1.2M	-17,214 (-1.4%)
2	COMPASS FINANCIAL MANAGEMENT LLC	600,230	1.91%	$588K	NEW
3	MILLENNIUM MANAGEMENT LLC	514,580	1.64%	$504K	-50,020 (-8.9%)
4	ACADIAN ASSET MANAGEMENT LLC	496,288	1.58%	$485K	-104,531 (-17.4%)
5	BlackRock, Inc.	395,896	1.26%	$388K	+24,686 (+6.7%)
6	RENAISSANCE TECHNOLOGIES LLC	380,491	1.21%	$373K	-91,109 (-19.3%)
7	GEODE CAPITAL MANAGEMENT, LLC	324,945	1.03%	$319K	-11,128 (-3.3%)
8	TWO SIGMA INVESTMENTS, LP	259,179	0.82%	$254K	-77,989 (-23.1%)
9	GAGNON SECURITIES LLC	182,142	0.58%	$178K	-19,158 (-9.5%)
10	VANGUARD FIDUCIARY TRUST CO	161,526	0.51%	$158K	+1,261 (+0.8%)
11	STATE STREET CORP	122,215	0.39%	$120K	-4,000 (-3.2%)
12	Gen-Wealth Partners Inc	105,111	0.33%	$103K	-2,000 (-1.9%)
13	NORTHERN TRUST CORP	69,743	0.22%	$68K	-6,112 (-8.1%)
14	Qube Research & Technologies Ltd	57,812	0.18%	$57K	+39,764 (+220.3%)
15	SUSQUEHANNA INTERNATIONAL GROUP, LLP	56,822	0.18%	$56K	-67,176 (-54.2%)
16	Vontobel Holding Ltd.	50,000	0.16%	$49K	+20,000 (+66.7%)
17	Bluespring Wealth Management, LLC	43,000	0.14%	$42K	NEW
18	BRIDGEWAY CAPITAL MANAGEMENT, LLC	40,000	0.13%	$39K	—
19	AM INVESTMENT STRATEGIES LLC	29,356	0.09%	$29K	—
20	Gerald Baker Financial Group LLC	22,691	0.07%	$22K	—
21	MAYPORT, LLC	22,000	0.07%	$22K	—
22	NORTH STAR ASSET MANAGEMENT INC	20,000	0.06%	$20K	—
23	WELLS FARGO & COMPANY/MN	19,800	0.06%	$19K	—
24	OSAIC HOLDINGS, INC.	18,865	0.06%	$18K	-1,000 (-5.0%)
25	XTX Topco Ltd	13,731	0.04%	$13K	-16,479 (-54.5%)
26	Savvy Advisors, Inc.	10,000	0.03%	$10K	—
27	Vanguard Global Advisers, LLC	8,893	0.03%	$9K	—
28	UBS Group AG	6,758	0.02%	$7K	-7,860 (-53.8%)
29	MORGAN STANLEY	6,341	0.02%	$6K	-7,256 (-53.4%)
30	Rockefeller Capital Management L.P.	4,000	0.01%	$4K	—
31	Steward Partners Investment Advisory, LLC	2,000	0.01%	$2K	-166 (-7.7%)
32	NORTHWESTERN MUTUAL WEALTH MANAGEMENT CO	1,657	0.01%	$2K	+1,550 (+1448.6%)
33	JPMORGAN CHASE & CO	1,494	0.00%	$1K	—
34	JONES FINANCIAL COMPANIES LLLP	1,351	0.00%	$1K	+1,000 (+284.9%)
35	NATIONAL BANK OF CANADA /FI/	921	0.00%	$903	-100 (-9.8%)
36	SBI Securities Co., Ltd.	492	0.00%	$482	-50 (-9.2%)
37	PITTENGER & ANDERSON INC	341	0.00%	$335	—
38	HARBOUR INVESTMENTS, INC.	334	0.00%	$327	NEW
39	NISA INVESTMENT ADVISORS, LLC	330	0.00%	$323	—
40	Investors Research Corp	300	0.00%	$294	—
41	Allied Private Wealth LLC	240	0.00%	$232	NEW
42	BARCLAYS PLC	203	0.00%	$199	NEW
43	BNP PARIBAS FINANCIAL MARKETS	201	0.00%	$197	-36 (-15.2%)
44	FEDERATED HERMES, INC.	137	0.00%	$134	-1,266 (-90.2%)
45	ROYAL BANK OF CANADA	45	0.00%	$0	—
46	Axiom Investment Management LLC	5	0.00%	$5	NEW
47	Caitong International Asset Management Co., Ltd	1	0.00%	$1	—

Exited since 2026-03-31 (13 filers; largest 13 shown)

GOLDMAN SACHS GROUP INC	−70,241
TWO SIGMA SECURITIES, LLC	−35,887
NINE MASTS CAPITAL Ltd	−35,227
DIMENSIONAL FUND ADVISORS LP	−34,923
JANE STREET GROUP, LLC	−34,299
Virtu Financial LLC	−12,324
Callan Family Office, LLC	−11,944
Intrepid Financial Planning Group LLC	−10,500
LEVEL FOUR ADVISORY SERVICES, LLC	−10,000
Advisory Services Network, LLC	−1,460
CITIGROUP INC	−678
CWM, LLC	−351
FMR LLC	−79

Large holders from 13D/13G (latest per reporting person, last 2 years)

Filed when a holder crosses 5% or changes materially, so often more current than the quarter-end 13F. Percentages are the filer's own, against the share count they used.

Reporting person	Form	Filed	Event	Shares	% of class
The Vanguard Group	SCHEDULE 13G/A	2025-07-29	2025-06-30	1,371,840	4.39%
BlackRock, Inc.	SCHEDULE 13G/A	2025-07-16	2025-06-30	462,969	1.5%

Source: SEC Form 13F-HR information tables for the quarter ending 2026-06-30 (filed within 45 days of quarter end; amendments applied; values normalised to dollars), the share count from the company's latest 10-K/10-Q XBRL cover page, and Schedule 13D/13G filings. Each row is a legal 13F filer as filed — related entities (e.g. Vanguard's advisers) are not merged. Retail brokerage accounts are not reported on 13F, so the remainder is mostly retail and insiders.