OTLK · Outlook Therapeutics, Inc.

$0.64 +0.00 (+0.59%) At close · Aug 28

Market Cap

$156.88M

243.45M

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.

Quarter:

Holders: 70

Total Value: $34,525,988

Total Shares: 21,714,479

Institutional Ownership Trend

26 quarters

Holder Concentration

Across 70 13F filers · Δ vs Mar 31, 2026

Top Holder

20.2%

−17.3 pts

Top 5

59.2%

−12.0 pts

Top 10

82.3%

−1.8 pts

HHI

962

Broadly held−895

Quarterly Activity

vs Mar 31, 2026

New

Increased

Decreased

Sold Out

Unchanged

Holder count: +14

Institutional value: +1406.2%

Shares held: +95.1%

Top Buyers

vs Mar 31, 2026

Institution	Added	Now Holds
Mega VANGUARD CAPITAL MANAGEMENT LLC	+2,409,712	4,376,872
Mega JANE STREET GROUP, LLC	+1,602,870	1,657,370
Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP	+1,512,706	1,689,590
Mega BlackRock, Inc.	+1,191,108	1,668,579
Large HRT FINANCIAL LP	+717,145	784,904

Top Sellers

vs Mar 31, 2026

Institution	Sold	Now Holds
Micro GILPIN WEALTH MANAGEMENT, LLC	−55,162	655,000
Large Vanguard Personalized Indexing Management, LLC	−7,373	24,119
Mid OPPENHEIMER & CO INC	−1,500	14,000
Large Federation des caisses Desjardins du Quebec	−1,287	25
Small Fortitude Family Office, LLC	−1,125	1,429

Top New Positions

vs Mar 31, 2026

Institution	Acquired	Value (USD)
Mid PERCEPTIVE ADVISORS LLC	3,139,216	$4,991,353
Large MARSHALL WACE, LLP	1,987,578	$3,160,248
Large Sanctuary Advisors, LLC	344,529	$547,801
Mid CANTOR FITZGERALD, L. P.	225,000	$357,750
Mega DEUTSCHE BANK AG\	130,700	$207,813

Top Sold-Out Positions

vs Mar 31, 2026

Institution	Previously Held	Last Value (USD)
Mid ARMISTICE CAPITAL, LLC	4,168,000	$858,608
Large COMMONWEALTH EQUITY SERVICES, LLC	470,000	$96,820
Small Warberg Asset Management LLC	275,000	$56,650
Large RENAISSANCE TECHNOLOGIES LLC	255,157	$52,562
Small NINE MASTS CAPITAL Ltd	232,546	$47,904

Filter: New 28 Increased 23 Reduced 7 Sold out 14 Unchanged 12

Showing 77 of 77

All Common Calls Puts

Compact Export CSV

Holder

Value (USD)

% of 13F

VANGUARD CAPITAL MANAGEMENT LLC

$6,959,226

20.16%

4,376,872

PERCEPTIVE ADVISORS LLC

$4,991,353

14.46%

3,139,216

MARSHALL WACE, LLP

$3,160,248

9.15%

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

7.68%

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

6.56%

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

5.74%

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

4.46%

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

3.61%

784,904

VANGUARD FIDUCIARY TRUST CO

$1,052,045

3.05%

661,664

GILPIN WEALTH MANAGEMENT, LLC

$882,450

2.56%

555,000

SUSQUEHANNA INTERNATIONAL GROUP, LLP

$862,098

2.50%

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

2.49%

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

1.59%

344,529

RAYMOND JAMES FINANCIAL INC

$527,960

1.53%

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

1.13%

246,428

NORTHERN TRUST CORP

$377,721

1.09%

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

1.04%

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

CANTOR FITZGERALD, L. P.

$357,750

1.04%

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

0.94%

205,013

LPL Financial LLC

$294,057

0.85%

184,942

SUSQUEHANNA INTERNATIONAL GROUP, LLP

$284,928

0.83%

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

0.80%

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

0.77%

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

0.70%

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

0.60%

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

0.54%

118,170

GILPIN WEALTH MANAGEMENT, LLC

$159,000

0.46%

100,000

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

0.26%

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

0.21%

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

Corient Private Wealth LLC

$55,809

0.16%

35,100

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

Flower City Capital

$31,800

0.09%

20,000

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

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

ORRSTOWN FINANCIAL SERVICES INC

$23,850

0.07%

15,000

TWO SIGMA SECURITIES, LLC

$23,619

0.07%

14,855

OPPENHEIMER & CO INC

$22,260

0.06%

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

Belvedere Trading LLC

$7,950

0.02%

5,000

Bullock Wealth Management Group

$6,538

0.02%

4,112

GoalVest Advisory LLC

$4,770

0.01%

3,000

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

Fortitude Family Office, LLC

$2,272

0.01%

1,429

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

Integrated Wealth Concepts LLC

$1,590

0.00%

1,000

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

BNP PARIBAS ARBITRAGE, SA

$484

0.00%

305

SBI Securities Co., Ltd.

$352

0.00%

222

ARMSTRONG ADVISORY GROUP, INC

$284

0.00%

179

Quarry LP

$279

0.00%

176

ROYAL BANK OF CANADA

$248

0.00%

156

Larson Financial Group LLC

$159

0.00%

100

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

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

Manager	Shares	Value (USD)	% of position	Discretion
Virtu Americas LLC	112,786	$23,233	100.0%	Defined

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	52,994	$10,916	100.0%	Defined

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

Manager	Shares	Value (USD)	% of position	Discretion
STONEX FINANCIAL INC.	13,122	$2,703	100.0%	Defined

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

Manager	Shares	Value (USD)	% of position	Discretion
GOLDMAN SACHS & CO. LLC	10,275	$2,116	100.0%	Defined

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	$226	100.0%	Sole

Key facts CIK 1649989 CUSIP 69012T305 13F (30d) 59 filings 59 filers Visit website Investor relations