OTLK · Outlook Therapeutics, Inc. · Holdings

$0.53 +0.01 (+1.73%)

Market Cap

$126.59M

243.45M

Volume · Oct 20 3.31M Avg daily vol (3M) 12.63M

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 OTLK: 13F, 13D and 13G, insiders and funds →

Institutional holdings are being reconciled with SEC filings. Holder totals and changes may be incomplete until reconciliation finishes.

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: 69

Total Value: $33,819,157

Total Shares: 21,782,479

Institutional Ownership Trend

27 quarters

Holder Concentration

Across 69 13F filers

Top Holder

20.2%

of institutional value

Top 5

59.3%

of institutional value

Top 10

82.4%

of institutional value

HHI

966

Broadly held

Who Holds OTLK

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: 68 filers, like-for-like change +88.5%; actively managed books +58.2%; index-like books +151.1%.

Holder type	Share	Filers	Change	New	Exited
Registered adviser	48.3%	27	+15.9%	10	7
Exempt adviser	9.8%	1	+754.7%	1	1
Bank	4.9%	10	+155.3%	3	0
Broker-dealer	2.1%	2	+192.8%	0	0
Non-US	0.6%	3	+24800.8%	1	0
Holding company	8.7%	5	+252.7%	2	1
Adviser	0.0%	0	—	0	0
Insurer	0.0%	0	—	0	0
Benefit plan	0.0%	0	—	0	0
Unknown	25.5%	20	+400.7%	9	4

Style	Share	Filers	Change	New	Exited
Index-like	43.5%	9	+151.1%	1	1
Systematic-like	11.7%	5	+1022.9%	3	2
Concentrated	1.8%	10	-59.8%	4	4
Diversified active	43.1%	44	+42.4%	18	6
Not measured	0.0%	0	—	0	0
Unknown	0.0%	0	—	0	0

Turnover	Share	Filers	Change	New	Exited
Low turnover	25.4%	38	+151.4%	11	4
Medium turnover	17.7%	11	-28.9%	6	5
High turnover	29.0%	13	+558.0%	8	4
Unknown	28.0%	6	+105.5%	1	0
Not measured	0.0%	0	—	0	0

Holding horizon	Share	Filers	Change	New	Exited
Short horizon	28.0%	6	+65.3%	2	4
Medium horizon	14.6%	14	+239.2%	8	1
Long horizon	26.9%	43	+164.9%	13	6
Unknown	30.5%	5	+41.0%	3	2
Not measured	0.0%	0	—	0	0

13F book size	Share	Filers	Change	New	Exited
Under $1B	3.8%	12	-43.4%	6	3
$1B to $10B	19.9%	19	-13.2%	7	5
$10B to $100B	16.4%	11	+271.4%	6	4
$100B or more	59.9%	26	+215.8%	7	1
Not measured	0.0%	0	—	0	0

Client base	Share	Filers	Change	New	Exited
Individuals and high net worth	4.3%	18	-26.2%	6	3
Pooled investment vehicles	16.0%	3	-30.5%	2	4
Registered funds and BDCs	27.8%	2	+118.7%	0	0
Corporations	0.0%	1	0.0%	0	0
Other investment advisers	0.2%	2	+12.5%	1	0
Diversified	0.0%	1	new	1	0
Pension and profit sharing plans	0.0%	0	—	0	0
Insurance companies	0.0%	0	—	0	0
Governments and sovereign funds	0.0%	0	—	0	0
Unknown	51.7%	41	+354.9%	16	6

Private funds	Share	Filers	Change	New	Exited
Hedge funds	25.6%	3	+6.1%	3	5
Private equity funds	0.0%	0	—	0	0
Real estate funds	0.1%	3	+273.1%	1	0
Other private funds	0.1%	2	+31.3%	1	0
Mixed private funds	0.0%	1	new	1	0
No private funds	32.3%	19	+74.0%	5	3
Private funds, type not stated	0.0%	0	—	0	0
Securitized asset funds	0.0%	0	—	0	0
Unknown	41.9%	40	+309.9%	15	5

Location	Share	Filers	Change	New	Exited
United States	88.5%	60	+73.7%	22	11
Outside the US	11.5%	8	+453.2%	4	2

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.

Excluded 1 holder with no observed 2026-03-31 13F and 1 holder with no observed 2026-06-30 13F.

Conviction and Crowding

68 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

7.48%

of shares outstanding, 22nd percentile

Mar 31, 2026: 7.00%

Private-fund advisers

4.32%

of shares outstanding

Institutional ownership

16.7%

20.6% of the estimated free float

Top 10 holders

83.1%

of 13F shares, Herfindahl 0.104

Active holders

+58.2%

like-for-like share change of active filers

5% stakes on record

3 13D, 1 13G (0 institutional, 1 passive, 0 exempt)

How long holders have held it value-weighted 4.9 quarters

Under 1 year 72.1% 1 to 3 years 17.6% 3 years or more 10.2% Since coverage start 0.000%

Managers in the top fifth by current three-year FundScore alpha were net buyers of $0 (0 buying, 0 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

$0.68

estimated per share

Mar 31, 2026: $0.59

Quarter-end price

$1.59

implied by 13F values

Estimated gain or loss

+133.9%

price against the estimated cost

Estimated at a loss

0.952%

of costed 13F value

Estimated cost covers 52.9% 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 OTLK's active holders also own, quarter ended Jun 30, 2026

#	Company	Shared holders	Similarity
1	ITW Illinois Tool Works Inc	3	0.037
2	AMD Advanced Micro Devices Inc	6	0.036
3	GE General Electric Co	5	0.034
4	GEV GE Vernova Inc.	5	0.033
5	NVDA Nvidia Corp	7	0.033
6	AMAT Applied Materials Inc /De	5	0.032
7	AMZN Amazon Com Inc	7	0.032
8	AAPL Apple Inc.	7	0.032
9	ABT Abbott Laboratories	4	0.032
10	MSFT Microsoft Corp	7	0.032

Shareholder Targets

13F filers that own its peers but not OTLK, quarter ended Jun 30, 2026

Found through its holder-overlap peers: ITW, AMD, GE, GEV, NVDA, AMAT, AMZN, AAPL, ABT, MSFT, GOOGL, ISRG, BRK-B, QCOM, IVZ, MU, PANW, HD, TSLA, COST. 7,317 filers in all.

#	Filer	In peers	Of book	Largest peers
1	VANGUARD PORTFOLIO MANAGEMENT LLC Registered adviser, Diversified active	$506,915,420,374 20 held	22.8%	NVDA, AAPL, GOOGL
2	Invesco Ltd. Adviser, Diversified active	$412,016,676,037 20 held	32.7%	NVDA, GOOGL, AAPL
3	NORGES BANK Non-US, Index-like	$346,664,461,314 20 held	34.5%	NVDA, GOOGL, AAPL
4	PRICE T ROWE ASSOCIATES INC /MD/ Registered adviser, Diversified active	$325,160,979,251 20 held	32.8%	NVDA, GOOGL, AAPL
5	BANK OF AMERICA CORP /DE/ Bank, Diversified active	$236,010,717,632 20 held	18.2%	NVDA, GOOGL, AAPL
6	GOLDMAN SACHS GROUP INC Holding company, Index-like	$220,507,125,293 20 held	24.6%	NVDA, GOOGL, AAPL
7	Capital Research Global Investors Adviser, Diversified active	$210,415,649,771 19 held	29.2%	NVDA, GOOGL, MSFT
8	UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC Registered adviser, Index-like	$194,668,303,560 20 held	35.6%	NVDA, AAPL, GOOGL
9	Capital World Investors Adviser, Diversified active	$191,739,860,383 15 held	22.7%	GOOGL, MU, NVDA
10	CHARLES SCHWAB INVESTMENT MANAGEMENT INC Registered adviser, Diversified active	$185,188,199,708 20 held	24.8%	NVDA, AAPL, GOOGL

Fund Ownership of OTLK by Fund Type

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

Index funds and index ETFs hold 2.00% of shares outstanding.

Fund type	Of shares outstanding	Change	Shares	Funds
Index funds	0.24%	+0.13 pp	576,785	7
Index ETFs	1.77%	+0.90 pp	4,301,146	2
Active ETFs	0.00%	0.00 pp	0	0
Active funds	0.00%	0.00 pp	0	0
Unclassified	0.00%	0.00 pp	0	0
All registered funds	2.00%	+1.03 pp	4,877,931	9

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 28 Exempt adviser 1 Bank 10 Broker-dealer 2 Non-US 3 Holding company 5 Unknown 20

Showing 76 of 76

All Common Calls Puts

Compact Export CSV

Holder

Value (USD)

% of 13F

VANGUARD CAPITAL MANAGEMENT LLC

$6,959,226

20.58%

4,376,872

PERCEPTIVE ADVISORS LLC

$4,991,353

14.76%

3,139,216

MARSHALL WACE, LLP

$3,160,248

9.34%

1,987,578

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

Manager	Shares	Value (USD)	% of position	Discretion
Marshall Wace North America L.P. joint	1,987,578	$3,160,248	100.0%	Other

BlackRock, Inc.

$2,653,040

7.84%

1,668,579

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

Manager	Shares	Value (USD)	% of position	Discretion
BlackRock Investment Management, LLC	13,085	$20,805	0.8%	Sole
BlackRock Institutional Trust Company, N.A.	1,655,494	$2,632,235	99.2%	Sole

JANE STREET GROUP, LLC

$2,266,179

6.70%

1,425,270

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

Manager	Shares	Value (USD)	% of position	Discretion
Jane Street Capital, LLC	1,425,270	$2,266,179	100.0%	Defined

GEODE CAPITAL MANAGEMENT, LLC

$1,980,929

5.86%

1,245,868

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	248,432	$395,006	19.9%	Defined
Held directly	997,436	$1,585,923	80.1%	Defined

SUSQUEHANNA INTERNATIONAL GROUP, LLP

$1,539,421

4.55%

968,190

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

Manager	Shares	Value (USD)	% of position	Discretion
SUSQUEHANNA SECURITIES, LLC	955,813	$1,519,742	98.7%	Other
G1 EXECUTION SERVICES, LLC	12,377	$19,679	1.3%	Other

HRT FINANCIAL LP

$1,247,997

3.69%

784,904

VANGUARD FIDUCIARY TRUST CO

$1,052,045

3.11%

661,664

SUSQUEHANNA INTERNATIONAL GROUP, LLP

$862,098

2.55%

542,200

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

Manager	Shares	Value (USD)	% of position	Discretion
SUSQUEHANNA SECURITIES, LLC	542,200	$862,098	100.0%	Other

STATE STREET CORP

$858,285

2.54%

539,802

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

Manager	Shares	Value (USD)	% of position	Discretion
STATE STREET GLOBAL ADVISORS TRUST COMPANY	539,802	$858,285	100.0%	Defined

Sanctuary Advisors, LLC

$547,801

1.62%

344,529

RAYMOND JAMES FINANCIAL INC

$527,960

1.56%

332,051

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

Manager	Shares	Value (USD)	% of position	Discretion
RAYMOND JAMES & ASSOCIATES	6,876	$10,932	2.1%	Defined
Raymond James Financial Services Advisors, Inc.	325,175	$517,028	97.9%	Defined

GROUP ONE TRADING LLC

$391,820

1.16%

246,428

NORTHERN TRUST CORP

$377,721

1.12%

237,561

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	237,561	$377,721	100.0%	Defined

CITADEL ADVISORS LLC

$360,294

1.07%

226,600

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	226,600	$360,294	100.0%	Defined

GILPIN WEALTH MANAGEMENT, LLC

$358,437

1.06%

625,000

CANTOR FITZGERALD, L. P.

$357,750

1.06%

225,000

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

Manager	Shares	Value (USD)	% of position	Discretion
Cantor Fitzgerald & Co.	225,000	$357,750	100.0%	Defined

SIMPLEX TRADING, LLC

$325,970

0.96%

205,013

LPL Financial LLC

$294,057

0.87%

184,942

SUSQUEHANNA INTERNATIONAL GROUP, LLP

$284,928

0.84%

179,200

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

Manager	Shares	Value (USD)	% of position	Discretion
SUSQUEHANNA SECURITIES, LLC	179,200	$284,928	100.0%	Other

JANE STREET GROUP, LLC

$277,137

0.82%

174,300

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

Manager	Shares	Value (USD)	% of position	Discretion
Jane Street Capital, LLC	174,300	$277,137	100.0%	Defined

CITADEL ADVISORS LLC

$265,689

0.79%

167,100

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	167,100	$265,689	100.0%	Defined

UBS Group AG

$242,021

0.72%

152,215

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

Manager	Shares	Value (USD)	% of position	Discretion
UBS AG	111,696	$177,596	73.4%	Defined
UBS Switzerland AG	40,519	$64,425	26.6%	Defined

DEUTSCHE BANK AG\

$207,813

0.61%

130,700

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

Manager	Shares	Value (USD)	% of position	Discretion
Deutsche Bank S.p.A	130,000	$206,700	99.5%	Defined
Held directly	700	$1,113	0.5%	Sole

Wealth Management Partners, LLC

$187,890

0.56%

118,170

Jefferies Financial Group Inc.

$99,375

0.29%

62,500

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

Manager	Shares	Value (USD)	% of position	Discretion
JEFFERIES LLC	62,500	$99,375	100.0%	Defined

MILLENNIUM MANAGEMENT LLC

$91,964

0.27%

57,839

JANE STREET GROUP, LLC

$91,902

0.27%

57,800

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

Manager	Shares	Value (USD)	% of position	Discretion
Jane Street Capital, LLC	57,800	$91,902	100.0%	Defined

Tower Research Capital LLC (TRC)

$91,251

0.27%

57,391

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)	57,391	$91,251	100.0%	Defined

Royal Fund Management, LLC

$75,048

0.22%

47,200

SCOTIA CAPITAL INC.

$73,617

0.22%

46,300

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

Manager	Shares	Value (USD)	% of position	Discretion
BANK OF NOVA SCOTIA	46,300	$73,617	100.0%	Defined

Vanguard Global Advisers, LLC

$65,407

0.19%

41,137

Belvedere Trading LLC

$65,029

0.19%

40,899

GILPIN WEALTH MANAGEMENT, LLC

$57,350

0.17%

100,000

Steward Partners Investment Advisory, LLC

$46,905

0.14%

29,500

Christensen, King & Associates Investment Services, Inc.

$45,039

0.13%

28,327

PNC FINANCIAL SERVICES GROUP, INC.

$39,750

0.12%

25,000

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

Manager	Shares	Value (USD)	% of position	Discretion
PNC Bank, National Association	25,000	$39,750	100.0%	Defined

Vanguard Personalized Indexing Management, LLC

$38,349

0.11%

24,119

Bank of New York Mellon Corp

$29,675

0.09%

18,664

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

Manager	Shares	Value (USD)	% of position	Discretion
The Bank of New York Mellon	18,662	$29,672	100.0%	Defined
Held directly	2	$3	0.0%	Defined

Flower City Capital

$28,675

0.08%

50,000

Signet Private Wealth LLC

$27,912

0.08%

17,555

SG Americas Securities, LLC

$27,460

0.08%

17,271

MORGAN STANLEY

$26,958

0.08%

16,956

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

Manager	Shares	Value (USD)	% of position	Discretion
MORGAN STANLEY & CO INTERNATIONAL PLC	68	$108	0.4%	Defined
MORGAN STANLEY & CO. LLC	21	$33	0.1%	Defined
MORGAN STANLEY CAPITAL SERVICES, LLC	12,757	$20,283	75.2%	Defined
MORGAN STANLEY SMITH BARNEY LLC	4,110	$6,534	24.2%	Defined

NewEdge Advisors, LLC

$26,587

0.08%

16,722

TWO SIGMA SECURITIES, LLC

$23,619

0.07%

14,855

OPPENHEIMER & CO INC

$22,260

0.07%

14,000

HARBOUR INVESTMENTS, INC.

$19,563

0.06%

12,304

OSAIC HOLDINGS, INC.

$18,230

0.05%

11,466

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

Manager	Shares	Value (USD)	% of position	Discretion
OSAIC WEALTH, INC.	11,466	$18,230	100.0%	Defined

Simplicity Wealth,LLC

$17,982

0.05%

11,310

Fifth Third Wealth Advisors LLC

$15,900

0.05%

10,000

JPMORGAN CHASE & CO

$12,671

0.04%

7,970

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

Manager	Shares	Value (USD)	% of position	Discretion
JPMorgan Chase Bank, N.A.	7,955	$12,648	99.8%	Defined
J.P. Morgan Securities plc	15	$23	0.2%	Defined

Caitong International Asset Management Co., Ltd

$11,645

0.03%

7,324

Rockefeller Capital Management L.P.

$9,937

0.03%

6,250

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

Manager	Shares	Value (USD)	% of position	Discretion
ROCKEFELLER FINANCIAL LLC	6,250	$9,937	100.0%	Defined

ORRSTOWN FINANCIAL SERVICES INC

$8,602

0.03%

15,000

Belvedere Trading LLC

$7,950

0.02%

5,000

Bullock Wealth Management Group

$4,078

0.01%

7,112

JONES FINANCIAL COMPANIES LLLP

$3,975

0.01%

2,500

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.	2,500	$3,975	100.0%	Sole

NORTHWESTERN MUTUAL WEALTH MANAGEMENT CO

$3,378

0.01%

2,125

Global Retirement Partners, LLC

$2,385

0.01%

1,500

WELLS FARGO & COMPANY/MN

$2,241

0.01%

1,410

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	1,409	$2,240	100.0%	Defined
WELLS FARGO CLEARING SERVICES, LLC	1	$1	0.0%	Defined

Ancora Advisors LLC

$1,749

0.01%

1,100

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

Manager	Shares	Value (USD)	% of position	Discretion
ANCORA PRIVATE WEALTH ADVISORS, LLC	1,100	$1,749	100.0%	Sole

GoalVest Advisory LLC

$1,720

0.01%

3,000

CITIGROUP INC

$1,216

0.00%

765

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

Manager	Shares	Value (USD)	% of position	Discretion
Citigroup Financial Products Inc. joint	765	$1,216	100.0%	Defined

EverSource Wealth Advisors, LLC

$1,106

0.00%

696

Fortitude Family Office, LLC

$819

0.00%

1,429

BNP PARIBAS ARBITRAGE, SA

$484

0.00%

305

SBI Securities Co., Ltd.

$352

0.00%

222

Quarry LP

$279

0.00%

176

ROYAL BANK OF CANADA

$248

0.00%

156

Larson Financial Group LLC

$159

0.00%

100

ARMSTRONG ADVISORY GROUP, INC

$102

0.00%

179

Prestige Wealth Management Group LLC

$98

0.00%

Federation des caisses Desjardins du Quebec

$39

0.00%

Bogart Wealth, LLC

0.00%

FMR LLC

0.00%

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

Manager	Shares	Value (USD)	% of position	Discretion
STRATEGIC ADVISERS LLC	1	$1	100.0%	Defined

Key facts CIK 1649989 CUSIP 69012T305 13F (30d) 19 filings 8 filers Visit website Investor relations