Rein Therapeutics RNTX Institutional Ownership

NASDAQ RNTX

$0.83 -0.04 (-4.06%)

At close: Sep 9, 2026 · 4:00 PM EDT

Institutions by Trading Activity

59 Institutions

Increased 39 66.1%

Unchanged 17 28.8%

Reduced 3 5.1%

Ownership Statistics

13F · as of 30 Jun, 2026

Institutional Ownership

60.84%

▲+24.71 pp QoQ

Shares Held by Institutions

40.81Mn

of 67.08Mn outstanding

▲+276.01% QoQ

Shares Outstanding

67.08Mn

26.27Mn held outside 13F filers

Institutional Investors

filed 13F for Jun 2026

▲+15 vs prior quarter

Net Shares Added (QoQ)

+29.96Mn

accumulated since last quarter

Value of Holdings

$36.32Mn

reported market value

Shares Owned by Institutions

Shares held % of outstanding

Latest —

Average ownership —

Peak ownership —

Shares Purchased/Sold by Institutions

Accumulated Distributed

Latest quarter —

Net over range —

Accumulating quarters —

Ownership Summary

Quarter ending 30 Jun, 2026

Rein Therapeutics, Inc. (NASDAQ:RNTX) appears in 59 institutional 13F filings for the quarter ending June 2026.

These investors collectively held 60.8% of Rein Therapeutics's outstanding shares in June 2026, up from 36.1% in March 2026.
They increased total shares held in Rein Therapeutics by 276.01% from the prior quarter, while the number of investors in RNTX increased 63.89% year over year.
During the quarter, 39 of these 59 funds increased positions in RNTX, 3 reduced exposure, and 17 held steady.
Combined, these investors held 40.81Mn shares in RNTX for June 2026, up by 29.96Mn shares quarter on quarter, and up 33.78Mn shares year over year.
Voss Capital, LP is the top holder of Rein Therapeutics as of June 30, 2026, with 5.26Mn shares representing 7.84% of outstanding stock.
Top purchasers of RNTX stock for the quarter ending June 2026 included Cable Car Capital, LP (4.77Mn), ADAR1 Capital Management, LLC (4.5Mn), Ikarian Capital, LLC (2.95Mn), GREAT POINT PARTNERS LLC (2.58Mn), CITADEL ADVISORS LLC (2.44Mn).
The largest sellers of Rein Therapeutics for the quarter ending June 2026 were GAGNON SECURITIES LLC (10.45K), RENAISSANCE TECHNOLOGIES LLC (5.5K), Caitong International Asset Management Co., Ltd (2).
Business Quant data shows the 10 biggest positions in Rein Therapeutics as of June 2026 are held by Voss Capital, LP (5.26Mn), Cable Car Capital, LP (5.19Mn), ADAR1 Capital Management, LLC (4.5Mn), VANGUARD CAPITAL MANAGEMENT LLC (3.38Mn), BIOS Capital Management, LP (2.98Mn), Ikarian Capital, LLC (2.95Mn), GREAT POINT PARTNERS LLC (2.58Mn), CITADEL ADVISORS LLC (2.44Mn), Velan Capital Investment Management LP (1.7Mn), Senvest Management, LLC (1.23Mn).

Form 13F Holdings

59 Institutional Holders

Report period 30 Jun, 2026

Total shares held 40.81Mn

Of outstanding 60.84%

#	Institution	CIK	Shares Held	% of Outstanding	Change (QoQ)	Change (%)	Value (USD)
1	Voss Capital, LP	0001730145	5,261,921	7.84%	▲873,559	+19.91%	$5.47Mn
2	Cable Car Capital, LP	0001699575	5,195,000	7.74%	▲4,775,000	+1,136.90%	$5.40Mn
3	ADAR1 Capital Management, LLC	0001940272	4,500,000	6.71%	▲4,500,000	0.00%	$4.68Mn
4	VANGUARD CAPITAL MANAGEMENT LLC	0002100119	3,377,910	5.04%	▲2,379,389	+238.29%	$3.51Mn
5	BIOS Capital Management, LP	0001813845	2,982,375	4.45%	▲1,000,000	+50.44%	$3.10Mn
6	Ikarian Capital, LLC	0001778253	2,950,000	4.40%	▲2,950,000	0.00%	$3.07Mn
7	GREAT POINT PARTNERS LLC	0001281446	2,575,000	3.84%	▲2,575,000	0.00%	$2.68Mn
8	CITADEL ADVISORS LLC	0001423053	2,438,711	3.64%	▲2,438,711	0.00%	$2.54Mn
9	Velan Capital Investment Management LP	0001848809	1,700,000	2.53%	▲1,700,000	0.00%	$1.77Mn
10	Senvest Management, LLC	0001328785	1,230,895	1.83%	▲1,000,000	+433.10%	$1.28Mn
11	Prosight Management, LP	0001617201	1,100,000	1.64%	▲1,100,000	0.00%	$1.14Mn
12	Bleichroeder LP	0001781002	1,000,000	1.49%	▲1,000,000	0.00%	$1.04Mn
13	BOOTHBAY FUND MANAGEMENT, LLC	0001549230	889,450	1.33%	▲889,450	0.00%	$925.03K
14	GEODE CAPITAL MANAGEMENT, LLC	0001214717	733,139	1.09%	▲388,449	+112.70%	$762.54K
15	UNIVERSITY OF TEXAS/TEXAS AM INVESTMENT MANAGEMENT CO	0001019231	511,610	0.76%	0	0.00%	$532.07K
16	VANGUARD FIDUCIARY TRUST CO	0000933478	382,515	0.57%	▲228,003	+147.56%	$397.82K
17	State Street Corp	0000093751	379,604	0.57%	▲303,700	+400.11%	$394.79K
18	Empery Asset Management, LP	0001469336	370,834	0.55%	▲370,834	0.00%	$385.67K
19	Sigma Planning Corp	0001449126	353,677	0.53%	▲5,000	+1.43%	$367.82K
20	BlackRock, Inc.	0002012383	326,204	0.49%	▲257,676	+376.02%	$339.25K

Showing 1 to 20 of 59 holders