Rein Therapeutics RNTX Institutional Ownership

NASDAQ RNTX

$0.60 -0.02 (-3.59%)

At close: Oct 22, 2026 · 4:00 PM EDT

Institutions by Trading Activity

58 Institutions

Increased 38 65.5%

Unchanged 17 29.3%

Reduced 3 5.2%

Ownership Statistics

13F · as of 30 Jun, 2026

Institutional Ownership

47.44%

▲+11.32 pp QoQ

Shares Held by Institutions

40.69Mn

of 85.77Mn outstanding

▲+271.06% QoQ

Shares Outstanding

85.77Mn

45.08Mn held outside 13F filers

Institutional Investors

filed 13F for Jun 2026

▲+14 vs prior quarter

Net Shares Added (QoQ)

+29.72Mn

accumulated since last quarter

Value of Holdings

$25.23Mn

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

Updated Oct 10, 2026

Rein Therapeutics, Inc. (NASDAQ:RNTX) appeared in the 13F filings of 58 institutional investors for the quarter ended June 30, 2026.

These investors held 47.44% of outstanding shares in Q2 2026, up from 36.12% the quarter before.
Total shares held in RNTX rose 271.06% from Q1 2026; the number of holders rose 65.71% from Q2 2025.
Of the 58 holders of RNTX in Q2 2026, 38 added to their positions, 3 reduced their stakes and 17 left their positions unchanged.
Combined, institutional investors held 40.69Mn shares of RNTX as of Q2 2026, up 29.72Mn from the prior quarter and up 34.08Mn from a year earlier.
As of June 30, 2026, the biggest holder of Rein Therapeutics was Voss Capital, LP with 5.26Mn shares, or 6.14% of shares outstanding.
The largest position increases in RNTX for Q2 2026 were by Cable Car Capital, LP (+4.78Mn shares), Vanguard Capital Management LLC (+2.38Mn shares), Senvest Management, LLC (+1Mn shares), BIOS Capital Management, LP (+1Mn shares) and Voss Capital, LP (+873.56K shares).
On the other side, among holders that kept a position in Rein Therapeutics, the largest reductions in Q2 2026 came from Gagnon Securities LLC (-10.45K shares), Renaissance Technologies LLC (-5.5K shares) and Caitong International Asset Management Co., Ltd (-2 shares).
According to Business Quant data, the leading holders of RNTX for Q2 2026 were Voss Capital, LP (5.26Mn shares), Cable Car Capital, LP (5.2Mn shares), ADAR1 Capital Management, LLC (4.5Mn shares), Vanguard Capital Management LLC (3.38Mn shares), BIOS Capital Management, LP (2.98Mn shares), Ikarian Capital, LLC (2.95Mn shares), Great Point Partners LLC (2.58Mn shares), Citadel Advisors LLC (2.44Mn shares), Velan Capital Investment Management LP (1.7Mn shares) and Senvest Management, LLC (1.23Mn shares).

Form 13F Holdings

58 Institutional Holders

Report period 30 Jun, 2026

Total shares held 40.69Mn

Of outstanding 47.44%

#	Institution	CIK	Shares Held	% of Outstanding	Change (QoQ)	Change (%)	Value (USD)
1	Voss Capital, LP	0001730145	5,261,921	6.14%	▲873,559	+19.91%	$5.47Mn
2	Cable Car Capital, LP	0001699575	5,195,000	6.06%	▲4,775,000	+1,136.90%	$5.40Mn
3	ADAR1 Capital Management, LLC	0001940272	4,500,000	5.25%	▲4,500,000	0.00%	$4.68Mn
4	VANGUARD CAPITAL MANAGEMENT LLC	0002100119	3,377,910	3.94%	▲2,379,389	+238.29%	$3.51Mn
5	BIOS Capital Management, LP	0001813845	2,982,375	3.48%	▲1,000,000	+50.44%	$3.10Mn
6	Ikarian Capital, LLC	0001778253	2,950,000	3.44%	▲2,950,000	0.00%	$3.07Mn
7	GREAT POINT PARTNERS LLC	0001281446	2,575,000	3.00%	▲2,575,000	0.00%	$2.68Mn
8	CITADEL ADVISORS LLC	0001423053	2,438,711	2.84%	▲2,438,711	0.00%	$2.54Mn
9	Velan Capital Investment Management LP	0001848809	1,700,000	1.98%	▲1,700,000	0.00%	$1.77Mn
10	Senvest Management, LLC	0001328785	1,230,895	1.44%	▲1,000,000	+433.10%	$1.28Mn
11	Prosight Management, LP	0001617201	1,100,000	1.28%	▲1,100,000	0.00%	$1.14Mn
12	Bleichroeder LP	0001781002	1,000,000	1.17%	▲1,000,000	0.00%	$1.04Mn
13	BOOTHBAY FUND MANAGEMENT, LLC	0001549230	889,450	1.04%	▲889,450	0.00%	$925.03K
14	GEODE CAPITAL MANAGEMENT, LLC	0001214717	733,139	0.85%	▲388,449	+112.70%	$762.54K
15	UNIVERSITY OF TEXAS/TEXAS AM INVESTMENT MANAGEMENT CO	0001019231	511,610	0.60%	0	0.00%	$532.07K
16	VANGUARD FIDUCIARY TRUST CO	0000933478	382,515	0.45%	▲228,003	+147.56%	$397.82K
17	State Street Corp	0000093751	379,604	0.44%	▲303,700	+400.11%	$394.79K
18	Empery Asset Management, LP	0001469336	370,834	0.43%	▲370,834	0.00%	$385.67K
19	Sigma Planning Corp	0001449126	353,677	0.41%	▲5,000	+1.43%	$367.82K
20	BlackRock, Inc.	0002012383	326,204	0.38%	▲257,676	+376.02%	$339.25K

Showing 1 to 20 of 58 holders