OSTX · OS Therapies Inc

$1.63 -0.03 (-1.87%)

Market Cap

$76.57M

46.13M

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: 29

Total Value: $5,502,274

Total Shares: 2,895,941

Institutional Ownership Trend

8 quarters

Holder Concentration

Across 29 13F filers · Δ vs Mar 31, 2026

Top Holder

26.9%

+10.7 pts

Top 5

68.0%

+0.8 pts

Top 10

87.1%

−0.3 pts

HHI

1,258

Broadly held+205

Quarterly Activity

vs Mar 31, 2026

New

Increased

Decreased

Sold Out

Unchanged

Holder count: 0

Institutional value: +34.7%

Shares held: -0.1%

Top Buyers

vs Mar 31, 2026

Institution	Added	Now Holds
Mega VANGUARD CAPITAL MANAGEMENT LLC	+308,184	777,651
Mega BlackRock, Inc.	+177,707	242,479
Large HighTower Advisors, LLC	+70,350	85,550
Mega VANGUARD FIDUCIARY TRUST CO	+57,469	174,132
Mega STATE STREET CORP	+28,900	120,100

Top Sellers

vs Mar 31, 2026

Institution	Sold	Now Holds
Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP	−435,205	13,532
Mega UBS Group AG	−339,865	8,813
Mega JANE STREET GROUP, LLC	−13,317	26,999

Top New Positions

vs Mar 31, 2026

Institution	Acquired	Value (USD)
Large MARSHALL WACE, LLP	100,640	$191,216
Small AXQ CAPITAL, LP	24,623	$46,783
Large Quadrature Capital Ltd	15,662	$29,757
Large Rockefeller Capital Management L.P.	7,500	$14,250
Large Steward Partners Investment Advisory, LLC	5,681	$10,793

Top Sold-Out Positions

vs Mar 31, 2026

Institution	Previously Held	Last Value (USD)
Small SANDERS MORRIS HARRIS LLC	32,000	$45,120
Mid XTX Topco Ltd	31,622	$44,587
Large MERCER GLOBAL ADVISORS INC /ADV	10,220	$14,410
Mega LPL Financial LLC	10,113	$14,259
Mid Tower Research Capital LLC (TRC)	4,179	$5,892

Filter: New 6 Increased 15 Reduced 3 Sold out 6 Unchanged 5

Showing 29 of 29

All Common Calls Puts

Compact Export CSV

Holder

Value (USD)

% of 13F

VANGUARD CAPITAL MANAGEMENT LLC

$1,477,536

26.85%

777,651

CM Management, LLC

$760,000

13.81%

400,000

GEODE CAPITAL MANAGEMENT, LLC

$573,408

10.42%

301,794

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	55,180	$104,842	18.3%	Defined
Held directly	246,614	$468,566	81.7%	Defined

HOWARD FINANCIAL SERVICES, LTD.

$471,201

8.56%

248,001

BlackRock, Inc.

$460,708

8.37%

242,479

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	7,436	$14,128	3.1%	Sole
BlackRock Fund Advisors	110,432	$209,820	45.5%	Sole
BlackRock Institutional Trust Company, N.A.	124,611	$236,760	51.4%	Sole

VANGUARD FIDUCIARY TRUST CO

$330,850

6.01%

174,132

STATE STREET CORP

$228,190

4.15%

120,100

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	120,100	$228,190	100.0%	Defined

MARSHALL WACE, LLP

$191,216

3.48%

100,640

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	100,640	$191,216	100.0%	Other

HighTower Advisors, LLC

$162,545

2.95%

85,550

NORTHERN TRUST CORP

$134,552

2.45%

70,817

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	70,817	$134,552	100.0%	Defined

Beacon Pointe Advisors, LLC

$118,763

2.16%

62,507

BRIDGEWAY CAPITAL MANAGEMENT, LLC

$85,500

1.55%

45,000

INGALLS & SNYDER LLC

$69,684

1.27%

36,676

TWO SIGMA INVESTMENTS, LP

$57,786

1.05%

30,414

STIFEL FINANCIAL CORP

$53,010

0.96%

27,900

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

Manager	Shares	Value (USD)	% of position	Discretion
STIFEL NICOLAUS & CO INC \MO\	27,900	$53,010	100.0%	Defined

JANE STREET GROUP, LLC

$51,298

0.93%

26,999

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	26,999	$51,298	100.0%	Defined

AXQ CAPITAL, LP

$46,783

0.85%

24,623

Vanguard Global Advisers, LLC

$39,820

0.72%

20,958

Stratos Wealth Advisors, LLC

$36,696

0.67%

19,314

Quadrature Capital Ltd

$29,757

0.54%

15,662

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

Manager	Shares	Value (USD)	% of position	Discretion
Quadrature US Inc.	15,662	$29,757	100.0%	Other

JONES FINANCIAL COMPANIES LLLP

$27,551

0.50%

14,501

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.	14,501	$27,551	100.0%	Sole

SUSQUEHANNA INTERNATIONAL GROUP, LLP

$25,710

0.47%

13,532

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

Manager	Shares	Value (USD)	% of position	Discretion
G1 EXECUTION SERVICES, LLC	13,532	$25,710	100.0%	Other

MORGAN STANLEY

$24,700

0.45%

13,000

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	13,000	$24,700	100.0%	Defined

UBS Group AG

$16,744

0.30%

8,813

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

Manager	Shares	Value (USD)	% of position	Discretion
UBS AG	8,813	$16,744	100.0%	Defined

Rockefeller Capital Management L.P.

$14,250

0.26%

7,500

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

Manager	Shares	Value (USD)	% of position	Discretion
ROCKEFELLER FINANCIAL LLC	7,500	$14,250	100.0%	Defined

Steward Partners Investment Advisory, LLC

$10,793

0.20%

5,681

BARCLAYS PLC

$2,914

0.05%

1,534

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

Manager	Shares	Value (USD)	% of position	Discretion
BARCLAYS CAPITAL INC.	1,534	$2,914	100.0%	Defined

ARMSTRONG ADVISORY GROUP, INC

$190

0.00%

100

Caitong International Asset Management Co., Ltd

$119

0.00%

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	31,622	$44,587	100.0%	Defined

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)	4,179	$5,892	100.0%	Defined

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

Manager	Shares	Value (USD)	% of position	Discretion
STRATEGIC ADVISERS LLC	2	$2	100.0%	Defined

Key facts CIK 1795091 CUSIP 68764Y207 13F (30d) 27 filings 27 filers Visit website Investor relations