AYTU · Aytu Biopharma, Inc · Holdings

$1.93 +0.03 (+1.58%) At close · Oct 26

Market Cap

$20.97M

10.87M

Volume · Oct 26 16.56K Avg daily vol (3M) 34.93K

Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.

Use institutional holdings through the 13F API or MCP → See every holder of AYTU: 13F, 13D and 13G, insiders and funds →

The Sep 30, 2026 filing window is still open — showing the latest known positions. Funds that have not filed yet carry their prior-quarter positions; a fund that filed without this stock counts as sold out. Each fund's Change is measured against its own previous reported quarter, shown in the Reported column. Pick a completed quarter in the Quarter selector below to put every fund on one quarter and see the stock-wide activity breakdown.

Quarter:

Holders: 36

Total Value: $8,247,160

Total Shares: 3,835,944

Institutional Ownership Trend

27 quarters

Holder Concentration

Across 38 13F filers

Top Holder

28.3%

of institutional value

Top 5

80.3%

of institutional value

Top 10

93.4%

of institutional value

HHI

1,747

Moderately concentrated

Who Holds AYTU

Last 8 quarters through Sep 30, 2026 (filing window open)

Each kind of 13F filer's share of the common shares 13F filers report. Holder type comes from regulatory records, never the filer's name; style, turnover and horizon are measured from each filer's own 13F book. The quarter selector does not change this card.

Jun 30, 2026, the newest closed quarter: 38 filers, like-for-like change -1.7%; actively managed books -2.2%; index-like books +2.2%.

Holder type	Share	Filers	Change	New	Exited
Registered adviser	90.0%	14	-2.2%	2	2
Exempt adviser	1.0%	1	-59.1%	0	0
Bank	0.8%	6	+46.6%	1	0
Broker-dealer	0.0%	1	0.0%	0	0
Non-US	0.0%	2	-2.9%	0	0
Holding company	0.6%	3	0.0%	0	0
Adviser	0.0%	0	—	0	0
Unknown	7.6%	11	+23.6%	0	0

Style	Share	Filers	Change	New	Exited
Index-like	11.8%	6	+2.2%	0	0
Systematic-like	4.6%	5	-2.3%	0	0
Concentrated	4.5%	4	-54.1%	0	0
Diversified active	79.1%	23	+4.5%	3	2
Not measured	0.0%	0	—	0	0
Unknown	0.0%	0	—	0	0

Turnover	Share	Filers	Change	New	Exited
Low turnover	10.8%	17	+17.9%	1	2
Medium turnover	71.3%	9	+5.1%	2	0
High turnover	9.5%	9	-41.9%	0	0
Unknown	8.3%	3	0.0%	0	0
Not measured	0.0%	0	—	0	0

Holding horizon	Share	Filers	Change	New	Exited
Short horizon	13.7%	7	-33.0%	0	0
Medium horizon	24.4%	4	+14.8%	0	0
Long horizon	30.8%	23	+8.1%	3	2
Unknown	31.1%	4	-1.4%	0	0
Not measured	0.0%	0	—	0	0

13F book size	Share	Filers	Change	New	Exited
Under $1B	34.8%	10	-5.9%	0	0
$1B to $10B	45.1%	6	0.0%	0	0
$10B to $100B	3.0%	6	+7.0%	2	2
$100B or more	17.1%	16	+1.3%	1	0
Not measured	0.0%	0	—	0	0

Client base	Share	Filers	Change	New	Exited
Individuals and high net worth	0.7%	4	-12.5%	2	2
Pooled investment vehicles	55.1%	6	-8.5%	0	0
Registered funds and BDCs	10.4%	3	+0.7%	0	0
Unknown	33.8%	25	+11.3%	1	0

Private funds	Share	Filers	Change	New	Exited
Hedge funds	79.9%	8	-4.1%	0	0
Private equity funds	0.0%	0	—	0	0
Other private funds	1.2%	2	+4.0%	0	0
No private funds	9.9%	4	+0.3%	1	1
Real estate funds	0.0%	1	-99.9%	1	1
Venture capital funds	0.0%	0	—	0	0
Unknown	9.0%	23	+23.3%	1	0

Location	Share	Filers	Change	New	Exited
United States	98.4%	31	-0.4%	2	2
Outside the US	1.6%	7	-46.5%	1	0

The Sep 30, 2026 filing window is still open, so its bar carries the Jun 30, 2026 positions of filers that have not filed yet.

How the mix is measured

Shares are 13F common shares restated to today's split basis; options and principal amounts are left out. The change compares only filers with a 13F in both quarters and keeps each filer in its bucket of the later quarter on both sides; a filer that continues under a new CIK is compared through its successor. Holder type comes from each filer's current regulatory profile; client base and private funds come from the Form ADV roster current at each quarter end (rosters from December 2019, so an earlier quarter reads Unknown). Style, turnover, horizon and book size are measured from each filer's 13F book in the newest measured quarter, and Not measured means none was. Actively managed books are those measured systematic-like, concentrated or diversified active.

Conviction and Crowding

38 13F filers, quarter ended Jun 30, 2026

Measured across every 13F filer's common-share book once the quarter's filing window closed. Crowding counts filers with high turnover or that advise private funds on Form ADV.

Conviction holders

0.000% of filers hold it in their top 10

Mar 31, 2026: 0

Holders above 5%

median weight 0.000%

Mar 31, 2026: 0

Crowding

29.2%

of shares outstanding, 80th percentile

Mar 31, 2026: 30.4%

Private-fund advisers

29.0%

of shares outstanding

Institutional ownership

35.7%

37.2% of the estimated free float

Top 10 holders

93.4%

of 13F shares, Herfindahl 0.175

Active holders

-2.2%

like-for-like share change of active filers

5% stakes on record

1 13D, 1 13G (0 institutional, 1 passive, 0 exempt)

How long holders have held it value-weighted 10.0 quarters

Under 1 year 16.8% 1 to 3 years 25.5% 3 years or more 57.7% Since coverage start 0.000%

Managers in the top fifth by current three-year FundScore alpha were net sellers of $483,056 (0 buying, 1 selling).

Estimated Holder Cost Basis

Quarter ended Jun 30, 2026, on that quarter's share basis

Estimated, never filed: each 13F buy is costed at its quarter's average traded price and each sale keeps the average cost, so this is what holders paid on average if they traded evenly through each quarter.

Estimated avg cost

$2.74

estimated per share

Mar 31, 2026: $2.72

Quarter-end price

$2.15

implied by 13F values

Estimated gain or loss

-21.5%

price against the estimated cost

Estimated at a loss

28.8%

of costed 13F value

Estimated cost covers 59.9% of the 13F shares; positions already held when a filer's 13F history starts, or bought in a quarter without a trusted average price, have no estimate.

Shared Holders

Companies AYTU's active holders also own, quarter ended Mar 31, 2026

#	Company	Shared holders	Similarity
1	UPB Upstream Bio, Inc.	3	0.306
2	ABEO Abeona Therapeutics Inc.	3	0.297

Shareholder Targets

13F filers that own its peers but not AYTU, quarter ended Mar 31, 2026

Found through its holder-overlap peers: UPB, ABEO. 158 filers in all.

#	Filer	In peers	Of book	Largest peers
1	FMR LLC Holding company, Diversified active	$73,786,829 2 held	0.000%	UPB, ABEO
2	ORBIMED ADVISORS LLC Registered adviser, Diversified active	$51,242,301 1 held	1.22%	UPB
3	Decheng Capital LLC Unknown, Concentrated	$24,523,812 1 held	3.71%	UPB
4	ENAVATE SCIENCES GP, LLC Unknown, Concentrated	$22,137,327 1 held	6.30%	UPB
5	AIGH Capital Management LLC Unknown, Concentrated	$13,888,000 1 held	2.92%	ABEO
6	Cable Car Capital, LP Registered adviser, Diversified active	$13,472,833 1 held	6.10%	ABEO
7	SUVRETTA CAPITAL MANAGEMENT, LLC Registered adviser, Diversified active	$11,988,480 1 held	0.350%	ABEO
8	STATE STREET CORP Bank, Index-like	$10,636,979 2 held	0.000%	UPB, ABEO
9	MILLENNIUM MANAGEMENT LLC Registered adviser, Systematic-like	$10,341,815 2 held	0.010%	UPB, ABEO
10	Propel Bio Management, LLC Registered adviser, Diversified active	$9,033,958 2 held	5.69%	ABEO, UPB

Fund Ownership of AYTU by Fund Type

Registered funds' Form N-PORT reports for the quarter ended Jun 30, 2026

Index funds and index ETFs hold 3.07% of shares outstanding.

Fund type	Of shares outstanding	Change	Shares	Funds
Index funds	0.66%	+0.07 pp	71,915	3
Index ETFs	2.40%	+0.10 pp	261,146	2
Active ETFs	0.14%	+0.04 pp	15,476	4
Active funds	0.16%	-0.09 pp	17,631	6
Unclassified	0.00%	0.00 pp	0	0
All registered funds	3.37%	+0.12 pp	366,168	15

How fund types are measured

Each fund series counts once, with its latest Form N-PORT report dated inside the quarter; only long share positions count, restated to today's split basis. The fund type is the series' latest Form N-CEN answer on or before the quarter end (the index-fund box and the exchange-traded flag), never its name. Unclassified funds have no usable N-CEN; unit investment trusts are among them, so index ownership is a floor. Funds sit inside their advisers' 13F reports, so these shares overlap the 13F figures and are never added to them.

Holder type: Registered adviser 13 Exempt adviser 1 Bank 6 Broker-dealer 1 Non-US 2 Holding company 3 Unknown 10

Showing 36 of 36

All Common Calls Puts

Compact Export CSV

Holder

Value (USD)

% of 13F

Nantahala Capital Management, LLC

$2,336,645

28.33%

1,086,812

Stonepine Capital Management, LLC

$1,962,780

23.80%

912,921

AWM Investment Company, Inc.

$1,332,084

16.15%

619,574

VANGUARD CAPITAL MANAGEMENT LLC

$561,463

6.81%

261,146

CROWN ADVISORS MANAGEMENT, INC.

$430,000

5.21%

200,000

DIADEMA PARTNERS LP

$319,373

3.87%

148,546

TWO SIGMA INVESTMENTS, LP

$226,450

2.75%

105,326

RENAISSANCE TECHNOLOGIES LLC

$225,369

2.73%

104,823

GEODE CAPITAL MANAGEMENT, LLC

$201,340

2.44%

93,647

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
GEODE CAPITAL MANAGEMENT TRUST COMPANY, LLC	20,758	$44,629	22.2%	Defined
Held directly	72,889	$156,711	77.8%	Defined

CITADEL ADVISORS LLC

$106,240

1.29%

49,414

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Citadel Securities GP LLC	49,414	$106,240	100.0%	Defined

VANGUARD FIDUCIARY TRUST CO

$101,153

1.23%

47,048

DIMENSIONAL FUND ADVISORS LP

$97,450

1.18%

45,326

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Dimensional Ireland Ltd	1,336	$2,872	2.9%	Defined
Held directly	43,990	$94,578	97.1%	Sole

Persistent Asset Partners Ltd

$81,665

0.99%

37,984

NORTHERN TRUST CORP

$60,038

0.73%

27,925

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
NORTHERN TRUST CO joint	27,925	$60,038	100.0%	Defined

BELLEVUE ASSET MANAGEMENT, LLC

$53,777

0.65%

25,013

BlackRock, Inc.

$49,004

0.59%

22,793

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
BlackRock Institutional Trust Company, N.A.	22,793	$49,004	100.0%	Sole

XTX Topco Ltd

$46,044

0.56%

21,416

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
XTX EXECUTION SERVICES LLC joint	21,416	$46,044	100.0%	Defined

ACADIAN ASSET MANAGEMENT LLC

$22,009

0.27%

10,237

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Acadian Inc	10,237	$22,009	100.0%	Defined

Daytona Street Capital LLC

$21,400

0.26%

10,000

UBS Group AG

$5,109

0.06%

2,377

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
UBS Financial Services Inc	260	$559	10.9%	Defined
UBS AG	2	$4	0.1%	Defined
UBS Switzerland AG	2	$4	0.1%	Defined
UBS Securities LLC	2,113	$4,542	88.9%	Defined

Tower Research Capital LLC (TRC)

$4,798

0.06%

2,232

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Latour Trading LLC (Latour)	2,232	$4,798	100.0%	Defined

OSAIC HOLDINGS, INC.

$993

0.01%

462

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
OSAIC WEALTH, INC.	462	$993	100.0%	Defined

ROYAL BANK OF CANADA

$812

0.01%

378

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
RBC Capital Markets, LLC	378	$812	100.0%	Defined

JPMORGAN CHASE & CO

$331

0.00%

154

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
J.P. Morgan Securities LLC	154	$331	100.0%	Defined

WELLS FARGO & COMPANY/MN

$272

0.00%

127

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
WELLS FARGO ADVISORS FINANCIAL NETWORK, LLC	12	$25	9.2%	Defined
WELLS FARGO CLEARING SERVICES, LLC	115	$247	90.8%	Defined

MORGAN STANLEY

$268

0.00%

125

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
MORGAN STANLEY SMITH BARNEY LLC	125	$268	100.0%	Defined

BARCLAYS PLC

$107

0.00%

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
BARCLAYS CAPITAL INC.	50	$107	100.0%	Defined

GROUP ONE TRADING LLC

$79

0.00%

BNP PARIBAS ARBITRAGE, SA

$49

0.00%

SBI Securities Co., Ltd.

$21

0.00%

Rockefeller Capital Management L.P.

$21

0.00%

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
ROCKEFELLER & CO. LLC	10	$21	100.0%	Defined

Arax Advisory Partners

0.00%

Caitong International Asset Management Co., Ltd

0.00%

VISION FINANCIAL MARKETS LLC

0.00%

TSFG, LLC

0.00%

JONES FINANCIAL COMPANIES LLLP

0.00%

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Edward D. Jones & Co., L.P.	1	$2	100.0%	Sole

Key facts CIK 1385818 CUSIP 054754858 13F (30d) 4 filings 4 filers Visit website Investor relations