Puma Bio Ownership | Who Owns Puma Bio?

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Puma Bio Ownership Summary

Puma Bio is owned by 75.62% institutional investors, 15.38% insiders, and 9.00% retail investors. Acorn capital advisors is the largest institutional shareholder, holding 8.26% of PBYI shares. Avantis US Small Cap Value ETF is the top mutual fund, with 3.51% of its assets in Puma Bio shares.

PBYI Ownership Benchmark

Type	Name	% Inst	% Insiders	% Retail
Stock	Puma Bio	75.62%	15.38%	9.00%
Sector	Healthcare Stocks	35.58%	11.87%	52.55%
Industry	Biotech Stocks	35.75%	11.83%	52.41%

Institutional Shareholders

Top Institutional Shareholders by Total Shares

Holder	Shares	% Holding	Value
Acorn capital advisors	4.13M	8.26%	$26.40M
Vanguard group	3.80M	7.54%	$22.60M
Blackrock	3.57M	7.41%	$11.65M
Blackrock funding, inc. /de	3.60M	7.20%	$23.00M
Frazier life sciences management	3.06M	6.36%	$9.98M
Acadian asset management	2.04M	4.08%	$13.04M
Renaissance	1.94M	3.88%	$12.41M
American century companies	1.92M	3.83%	$12.25M
Millennium management	1.48M	2.95%	$9.44M
Dimensional fund advisors lp	1.44M	2.87%	$9.17M

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	7.50%	$26.40M
Frazier life sciences management	3.06M	0.47%	$9.98M
Haven private	155.26K	0.43%	$992.11K
Globeflex capital l p	349.65K	0.34%	$2.23M
C2c wealth management	23.62K	0.13%	$150.93K
Round rock advisors	128.91K	0.13%	$823.75K
Kennedy capital management	889.60K	0.12%	$5.68M
Entrypoint capital	53.46K	0.10%	$341.63K
Bridgeway capital management	775.34K	0.10%	$4.95M

Top Buyers

Holder	Shares	% Assets	Change
Blackrock	3.57M	0.00%	1.96M
Millennium management	1.48M	0.00%	1.46M
Lsv asset management	1.18M	0.02%	778.07K
Ubs group	534.23K	0.00%	406.92K
American century companies	1.92M	0.01%	266.21K

Top Sellers

Holder	Shares	% Assets	Change
Camber capital management lp	-	-	-1.65M
Great point partners	-	-	-1.49M
Marshall wace, llp	-	-	-557.55K
Affinity asset advisors	-	-	-250.00K
Eversept partners, lp	-	-	-240.69K

New Positions

Holder	Shares	% Assets	Change	Value
Vanguard fiduciary trust	251.68K	0.00%	251.68K	$1.61M
Wellington management group llp	149.55K	0.00%	149.55K	$794.12K
Vanguard global advisers	29.17K	0.00%	29.17K	$186.41K
Envestnet asset management	26.56K	-	26.56K	$169.71K
Creative planning	23.11K	0.00%	23.11K	$147.69K

Sold Out

Holder	Change
Concord wealth partners	-6.00
National bank of canada /fi/	-10.00
Capital performance advisors llp	-15.00
Clearstead advisors	-17.00
Richards, merrill & peterson	-40.00

Institutional Ownership Trends

Date	Holdings	Change %	Shares	Change %	Ownership	Change %	Increased Position	Change %	Decreased Position	Change %
Mar 31, 2026	154	0.65%	37,817,792	7.00%	75	1.53%	90	8.43%	35	-14.63%
Dec 31, 2025	79	-42.34%	17,154,333	-50.16%	34	0.71%	42	-44.00%	16	-52.94%
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%

Top Mutual Funds Shareholders

Holder	Shares	% Holding	Change
Avantis US Small Cap Value ETF	1.79M	3.51%	-
Vanguard Total Stock Mkt Idx Inv	1.34M	2.64%	-
Vanguard US Total Market Shares ETF	1.27M	2.56%	-
iShares Russell 2000 ETF	1.04M	2.05%	8.79K
Vanguard Explorer Inv	777.39K	1.53%	-
Vanguard Strategic Equity Inv	540.43K	1.06%	-
Kennedy Micro Cap	515.62K	1.01%	9.33K
Vanguard Institutional Extnd Mkt Idx Tr	439.31K	0.86%	15.22K
Fidelity Small Cap Index	420.80K	0.83%	3.25K
Janus Henderson Small/Md Cp Gr Alpha ETF	368.14K	0.74%	-

Recent Insider Transactions

Date	Name	Role	Activity	Value
Jan 06, 2026	AUERBACH ALAN H	President and CEO	Sell	$98.99K
Jan 07, 2026	AUERBACH ALAN H	President and CEO	Sell	$105.89K
Jan 07, 2026	HUNT DOUGLAS M	See Remarks	Sell	$29.48K
Jan 06, 2026	HUNT DOUGLAS M	See Remarks	Sell	$23.22K
Jan 06, 2026	NOUGUES MAXIMO F	Chief Financial Officer	Sell	$26.53K

Insider Transactions Trends

Date	Buy	Sell
2026 Q1	-	6
2025 Q4	-	1
2025 Q3	-	7
2025 Q2	-	6
2025 Q1	-	4

PBYI Ownership FAQ

Who Owns Puma Bio?

Puma Bio shareholders are primarily institutional investors at 75.62%, followed by 15.38% insiders and 9.00% retail investors. The average institutional ownership in Puma Bio's industry, Biotech Stocks , is 35.75%, which Puma Bio exceeds.

Who owns the most shares of Puma Bio?

Puma Bio’s largest shareholders are Acorn capital advisors (4.13M shares, 8.26%), Vanguard group (3.8M shares, 7.54%), and Blackrock (3.57M shares, 7.41%). Together, they hold 23.22% 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?

Avantis US Small Cap Value ETF is the top mutual fund holder of Puma Bio shares, with 3.51% of its total shares outstanding invested in 1.79M Puma Bio shares.

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