RNTX · Rein Therapeutics, Inc.

$0.76 -0.02 (-2.64%)

Market Cap

$66.18M

86.27M

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: 59

Total Value: $42,443,723

Total Shares: 40,811,294

Institutional Ownership Trend

15 quarters

Holder Concentration

Across 59 13F filers · Δ vs Mar 31, 2026

Top Holder

12.9%

−25.6 pts

Top 5

52.2%

−20.6 pts

Top 10

78.9%

−8.1 pts

HHI

755

Broadly held−1,195

Quarterly Activity

vs Mar 31, 2026

New

Increased

Decreased

Sold Out

Unchanged

Holder count: +13

Institutional value: +186.5%

Shares held: +258.1%

Top Buyers

vs Mar 31, 2026

Institution	Added	Now Holds
Mid Cable Car Capital, LP	+4,775,000	5,195,000
Mega VANGUARD CAPITAL MANAGEMENT LLC	+2,379,389	3,377,910
Mid Senvest Management, LLC	+1,000,000	1,230,895
Micro BIOS Capital Management, LP	+1,000,000	2,982,375
Mid Voss Capital, LP	+873,559	5,261,921

Top Sellers

vs Mar 31, 2026

Institution	Sold	Now Holds
Small GAGNON SECURITIES LLC	−10,450	229,070
Large RENAISSANCE TECHNOLOGIES LLC	−5,500	19,000
Small Caitong International Asset Management Co., Ltd	−2	1

Top New Positions

vs Mar 31, 2026

Institution	Acquired	Value (USD)
Mid ADAR1 Capital Management, LLC	4,500,000	$4,680,000
Small Ikarian Capital, LLC	2,950,000	$3,068,000
Small GREAT POINT PARTNERS LLC	2,575,000	$2,678,000
Mega CITADEL ADVISORS LLC	2,438,711	$2,536,259
Small Velan Capital Investment Management LP	1,700,000	$1,768,000

Top Sold-Out Positions

vs Mar 31, 2026

Institution	Previously Held	Last Value (USD)
Small TWO SIGMA SECURITIES, LLC	31,713	$41,226
Mid EXENCIAL WEALTH ADVISORS, LLC	30,528	$39,686
Small SANDERS MORRIS HARRIS LLC	20,000	$26,000
Mid Ancora Advisors LLC	20,000	$26,000
Large HRT FINANCIAL LP	15,486	$20,131

Filter: New 21 Increased 18 Reduced 3 Sold out 8 Unchanged 17

Showing 59 of 59

All Common Calls Puts

Compact Export CSV

Holder

Value (USD)

% of 13F

Voss Capital, LP

$5,472,397

12.89%

5,261,921

Cable Car Capital, LP

$5,402,800

12.73%

5,195,000

ADAR1 Capital Management, LLC

$4,680,000

11.03%

4,500,000

VANGUARD CAPITAL MANAGEMENT LLC

$3,513,026

8.28%

3,377,910

BIOS Capital Management, LP

$3,101,670

7.31%

2,982,375

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

Manager	Shares	Value (USD)	% of position	Discretion
Steelhead Capital Management, LLC	1,758,375	$1,828,710	59.0%	Other
Held directly	1,224,000	$1,272,960	41.0%	Defined

Ikarian Capital, LLC

$3,068,000

7.23%

2,950,000

GREAT POINT PARTNERS LLC

$2,678,000

6.31%

2,575,000

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

Manager	Shares	Value (USD)	% of position	Discretion
JAY JEFFREY R joint	2,575,000	$2,678,000	100.0%	Defined

CITADEL ADVISORS LLC

$2,536,259

5.98%

2,438,711

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	188,711	$196,259	7.7%	Defined
Held directly	2,250,000	$2,340,000	92.3%	Defined

Velan Capital Investment Management LP

$1,768,000

4.17%

1,700,000

Senvest Management, LLC

$1,280,130

3.02%

1,230,895

Prosight Management, LP

$1,144,000

2.70%

1,100,000

Bleichroeder LP

$1,040,000

2.45%

1,000,000

BOOTHBAY FUND MANAGEMENT, LLC

$925,028

2.18%

889,450

GEODE CAPITAL MANAGEMENT, LLC

$762,464

1.80%

733,139

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	84,352	$87,726	11.5%	Defined
Held directly	648,787	$674,738	88.5%	Defined

UNIVERSITY OF TEXAS/TEXAS AM INVESTMENT MANAGEMENT CO

$532,074

1.25%

511,610

VANGUARD FIDUCIARY TRUST CO

$397,815

0.94%

382,515

STATE STREET CORP

$394,788

0.93%

379,604

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	379,604	$394,788	100.0%	Defined

Empery Asset Management, LP

$385,667

0.91%

370,834

Sigma Planning Corp

$367,824

0.87%

353,677

BlackRock, Inc.

$339,251

0.80%

326,204

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	5,739	$5,968	1.8%	Sole
BlackRock Fund Advisors	87,065	$90,547	26.7%	Sole
BlackRock Institutional Trust Company, N.A.	233,400	$242,736	71.6%	Sole

Texas Capital Bank Wealth Management Services Inc

$312,787

0.74%

300,758

Sequoia Financial Advisors, LLC

$260,000

0.61%

250,000

GAGNON SECURITIES LLC

$238,232

0.56%

229,070

Stonepine Capital Management, LLC

$226,759

0.53%

218,038

Palogic Value Management, L.P.

$187,200

0.44%

180,000

NORTHERN TRUST CORP

$166,108

0.39%

159,720

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	159,720	$166,108	100.0%	Defined

ABS Direct Equity Fund LLC

$130,000

0.31%

125,000

ABS Investment Management LLC

$130,000

0.31%

125,000

Rock Creek Group LLC

$130,000

0.31%

125,000

Warberg Asset Management LLC

$102,960

0.24%

99,000

CORSAIR CAPITAL MANAGEMENT, L.P.

$83,200

0.20%

80,000

GOLDMAN SACHS GROUP INC

$82,976

0.20%

79,785

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	79,785	$82,976	100.0%	Defined

UBS Group AG

$59,706

0.14%

57,410

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

Manager	Shares	Value (USD)	% of position	Discretion
UBS AG	57,375	$59,670	99.9%	Defined
UBS Europe SE	35	$36	0.1%	Defined

MERCER GLOBAL ADVISORS INC /ADV

$52,479

0.12%

50,461

XTX Topco Ltd

$47,590

0.11%

45,760

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	45,760	$47,590	100.0%	Defined

NORTHWESTERN MUTUAL WEALTH MANAGEMENT CO

$44,137

0.10%

42,440

Americana Partners, LLC

$43,513

0.10%

41,840

Chicago Partners Investment Group LLC

$42,689

0.10%

41,048

Prime Capital Investment Advisors, LLC

$37,555

0.09%

36,111

SteelPeak Wealth, LLC

$34,320

0.08%

33,000

Qube Research & Technologies Ltd

$32,018

0.08%

30,787

Savant Capital, LLC

$31,749

0.07%

30,528

Meridian Wealth Advisors, LLC

$29,625

0.07%

28,486

Gleason Group, Inc.

$23,284

0.05%

22,389

Global Retirement Partners, LLC

$20,088

0.05%

19,316

RENAISSANCE TECHNOLOGIES LLC

$19,760

0.05%

19,000

Cane Capital Partners, LLC

$18,720

0.04%

18,000

Annandale Capital, LLC

$15,627

0.04%

15,026

MORGAN STANLEY

$14,890

0.04%

14,318

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

Manager	Shares	Value (USD)	% of position	Discretion
MORGAN STANLEY CAPITAL SERVICES, LLC	6,710	$6,978	46.9%	Defined
MORGAN STANLEY SMITH BARNEY LLC	7,608	$7,912	53.1%	Defined

Vanguard Global Advisers, LLC

$13,284

0.03%

12,774

Cetera Investment Advisers

$12,211

0.03%

11,742

Rockefeller Capital Management L.P.

$5,300

0.01%

5,097

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

Manager	Shares	Value (USD)	% of position	Discretion
ROCKEFELLER FINANCIAL LLC	5,097	$5,300	100.0%	Defined

BARCLAYS PLC

$2,672

0.01%

2,570

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

Manager	Shares	Value (USD)	% of position	Discretion
BARCLAYS CAPITAL INC.	2,570	$2,672	100.0%	Defined

JFS WEALTH ADVISORS, LLC

$1,653

0.00%

1,590

US BANCORP \DE\

$1,300

0.00%

1,250

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

Manager	Shares	Value (USD)	% of position	Discretion
US BANK NATIONAL ASSOCIATION	1,250	$1,300	100.0%	Defined

NFSG Corp

$100

0.00%

Blue Trust, Inc.

$20

0.00%

ACADIAN ASSET MANAGEMENT LLC

$17

0.00%

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

Manager	Shares	Value (USD)	% of position	Discretion
Acadian Inc	17	$17	100.0%	Defined

Caitong International Asset Management Co., Ltd

0.00%

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	20,000	$26,000	100.0%	Sole

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

Manager	Shares	Value (USD)	% of position	Discretion
Tower Research Capital Investments LLC	35	$45	1.0%	Other
Latour Trading LLC (Latour)	3,356	$4,362	99.0%	Defined

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

Manager	Shares	Value (USD)	% of position	Discretion
WELLS FARGO CLEARING SERVICES, LLC	20	$26	100.0%	Defined

Key facts CIK 1420565 CUSIP 00887A204 13F (30d) 57 filings 56 filers Visit website Investor relations