Puma Bio Ownership | Who Owns Puma Bio?

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Puma Bio Ownership Summary

Puma Bio is owned by 30.22% institutional investors, 15.39% insiders, and 54.40% retail investors. Acorn capital advisors is the largest institutional shareholder, holding 8.31% of PBYI shares. Vanguard Total Stock Mkt Idx Inv is the top mutual fund, with 2.58% of its assets in Puma Bio shares.

PBYI Ownership Benchmark

Type	Name	% Inst	% Insiders	% Retail
Stock	Puma Bio	30.22%	15.39%	54.40%
Sector	Healthcare Stocks	42.54%	10.83%	46.63%
Industry	Biotech Stocks	45.22%	10.75%	44.04%

Institutional Shareholders

Top Institutional Shareholders by Total Shares

Holder	Shares	% Holding	Value
Acorn capital advisors	4.13M	8.31%	$21.94M
Vanguard group	3.69M	7.43%	$19.60M
Blackrock	3.57M	7.41%	$11.65M
Blackrock funding, inc. /de	3.58M	7.20%	$19.00M
Frazier life sciences management	3.06M	6.36%	$9.98M
Renaissance	2.15M	4.33%	$11.42M
Acadian asset management	2.05M	4.13%	$10.90M
American century companies	1.48M	2.98%	$7.88M
Millennium management	1.39M	2.79%	$4.10M
Athyrium capital management, lp	1.26M	2.61%	$4.10M

Top Institutional Shareholders by % of Total Assets

Holder	Shares	% Assets	Value
Athyrium capital management, lp	1.26M	12.21%	$4.10M
Acorn capital advisors	4.13M	11.14%	$21.94M
Frazier life sciences management	3.06M	0.47%	$9.98M
Globeflex capital l p	452.61K	0.37%	$2.40M
Virtus etf advisers	47.17K	0.16%	$250.48K
C2c wealth management	23.02K	0.10%	$122.24K
Kennedy capital management	867.63K	0.10%	$4.61M
Sherbrooke park advisers	30.53K	0.08%	$162.10K
Perkins capital management	12.20K	0.06%	$64.78K
Round rock advisors	65.40K	0.05%	$329.60K

Top Buyers

Holder	Shares	% Assets	Change
Blackrock	3.57M	0.00%	1.96M
Russell investments group	964.69K	0.01%	964.67K
Marshall wace, llp	557.55K	0.00%	484.13K
O'shaughnessy asset management	828.22K	0.03%	390.56K
Renaissance	2.15M	0.02%	276.50K

Top Sellers

Holder	Shares	% Assets	Change
Camber capital management lp	-	-	-1.65M
Great point partners	-	-	-1.49M
Millennium management	1.39M	0.00%	-508.93K
Blackrock funding, inc. /de	3.58M	0.00%	-257.84K
Affinity asset advisors	-	-	-250.00K

New Positions

Holder	Shares	% Assets	Change	Value
Wellington management group llp	149.55K	0.00%	149.55K	$794.12K
First trust advisors lp	119.78K	0.00%	119.78K	$636.03K
Assenagon asset management	72.98K	0.00%	72.98K	$387.52K
Round rock advisors	65.40K	0.05%	65.40K	$329.60K
Winton group	61.32K	0.01%	61.32K	$325.63K

Sold Out

Holder	Change
Concord wealth partners	-6.00
Capital performance advisors llp	-15.00
Richards, merrill & peterson	-40.00
Southstate	-111.00
Coldstream capital management	-304.00

Institutional Ownership Trends

Date	Holdings	Change %	Shares	Change %	Ownership	Change %	Increased Position	Change %	Decreased Position	Change %
Sep 30, 2025	66	-42.61%	15,017,679	-51.48%	30	0.78%	27	-54.24%	21	-34.38%
Jun 30, 2025	123	4.24%	32,779,375	7.78%	65	1.75%	63	-10.00%	34	36.00%
Mar 31, 2025	4	-96.46%	5,660,761	-80.62%	11	0.32%	-	-100.00%	3	-85.00%
Dec 31, 2024	35	-66.35%	13,117,113	-55.90%	26	0.73%	19	-64.15%	7	-70.83%
Sep 30, 2024	104	2.97%	29,741,440	-3.95%	60	1.47%	53	-8.62%	24	-7.69%

Top Mutual Funds Shareholders

Holder	Shares	% Holding	Change
Vanguard Total Stock Mkt Idx Inv	1.29M	2.58%	-28.37K
Vanguard US Total Market Shares ETF	1.27M	2.56%	-
Avantis US Small Cap Value ETF	1.22M	2.42%	4.37K
iShares Russell 2000 ETF	1.06M	2.10%	-
Vanguard Explorer Inv	777.39K	1.57%	-
Kennedy Micro Cap	650.14K	1.31%	46.15K
Vanguard Strategic Equity Inv	540.43K	1.09%	-
Fidelity Small Cap Index	427.26K	0.86%	-7.37K
Vanguard Institutional Extnd Mkt Idx Tr	402.46K	0.81%	-183.39K
Janus Henderson Small/Md Cp Gr Alpha ETF	368.14K	0.74%	-

Recent Insider Transactions

Date	Name	Role	Activity	Value
Nov 11, 2025	MILLER MICHAEL PATRICK	-	Sell	$97.23K
Jul 18, 2025	Cesano Alessandra	-	Sell	$90.91K
Jul 09, 2025	NOUGUES MAXIMO F	Chief Financial Officer	Sell	$13.91K
Jul 08, 2025	NOUGUES MAXIMO F	Chief Financial Officer	Sell	$19.74K
Jul 08, 2025	HUNT DOUGLAS M	See Remarks	Sell	$15.45K

Insider Transactions Trends

Date	Buy	Sell
2025 Q4	-	1
2025 Q3	-	7
2025 Q2	-	6
2025 Q1	-	4
2024 Q3	-	9

PBYI Ownership FAQ

Who Owns Puma Bio?

Puma Bio shareholders are primarily institutional investors at 30.22%, followed by 15.39% insiders and 54.39% retail investors. The average institutional ownership in Puma Bio's industry, Biotech Stocks , is 45.22%, which Puma Bio falls below.

Who owns the most shares of Puma Bio?

Puma Bio’s largest shareholders are Acorn capital advisors (4.13M shares, 8.31%), Vanguard group (3.69M shares, 7.43%), and Blackrock (3.57M shares, 7.41%). Together, they hold 23.15% of Puma Bio’s total shares outstanding.

Does Blackrock own Puma Bio?

Yes, BlackRock owns 7.41% of Puma Bio, totaling 3.57M shares as of Jun 2024. This represents 0.00% of BlackRock's total assets, with a market value of 11.65M$. In the last quarter, BlackRock increased its holdings by 1.96M shares, a 120.88% change.

Who is Puma Bio’s biggest shareholder by percentage of total assets invested?

Athyrium capital management, lp is Puma Bio’s biggest shareholder by percentage of total assets invested, with 12.21% of its assets in 1.26M Puma Bio shares, valued at 4.1M$.

Who is the top mutual fund holder of Puma Bio shares?

Vanguard Total Stock Mkt Idx Inv is the top mutual fund holder of Puma Bio shares, with 2.58% of its total shares outstanding invested in 1.29M Puma Bio shares.

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