Who owns Rein Therapeutics Inc.?
Institutional ownership of RNTX from SEC Form 13F filings across 35 reporting managers. All positions are from one synchronized reporting period — 2026-06-30 books, filed up to 45 days after quarter end — so every row is comparable.
35
13F holders
$13.1M
value, 2026 filers
45.3%
of shares outstanding (12.7M sh)
14
new positions (2026 filers)
Top institutional holders
ordered by shares owned · positions as of 2026-06-30· % of fund = share of the manager's own book · % of co. = share of RNTX's shares outstanding
| # | Manager | Shares | Value | % of fund | % of co. | Δ shares QoQ |
|---|---|---|---|---|---|---|
| 1 | VANGUARD CAPITAL MANAGEMENT LLC | 3.4M | $3.5M | 0.0% | 12.1% | +69.1% |
| 2 | GREAT POINT PARTNERS LLCNEW | 2.6M | $2.7M | 0.5% | 9.2% | new |
| 3 | CITADEL ADVISORS LLCNEW | 2.4M | $2.5M | 0.0% | 8.7% | new |
| 4 | BOOTHBAY FUND MANAGEMENT, LLCNEW | 889,450 | $925,028 | 0.0% | 3.2% | new |
| 5 | GEODE CAPITAL MANAGEMENT, LLC | 733,139 | $762,540 | 0.0% | 2.6% | +112.7% |
| 6 | UNIVERSITY OF TEXAS/TEXAS AM INVESTMENT MANAGEMENT CO | 511,610 | $532,074 | 0.1% | 1.8% | 0.0% |
| 7 | VANGUARD FIDUCIARY TRUST CO | 382,515 | $397,816 | 0.0% | 1.4% | +147.6% |
| 8 | Sigma Planning Corp | 353,677 | $367,824 | 0.0% | 1.3% | +1.4% |
| 9 | BlackRock, Inc. | 326,204 | $339,253 | 0.0% | 1.2% | +376.0% |
| 10 | Sequoia Financial Advisors, LLCNEW | 250,000 | $260,000 | 0.0% | 0.9% | new |
| 11 | NORTHERN TRUST CORP | 159,720 | $166,109 | 0.0% | 0.6% | +149.0% |
| 12 | Warberg Asset Management LLCNEW | 99,000 | $100,980 | 0.0% | 0.4% | new |
| 13 | GOLDMAN SACHS GROUP INCNEW | 79,785 | $82,976 | 0.0% | 0.3% | new |
| 14 | UBS Group AG | 57,410 | $59,706 | 0.0% | 0.2% | +5506.4% |
| 15 | MERCER GLOBAL ADVISORS INC /ADV | 50,461 | $52,479 | 0.0% | 0.2% | +42.3% |
| 16 | NORTHWESTERN MUTUAL WEALTH MANAGEMENT CO | 42,440 | $44,138 | 0.0% | 0.2% | 0.0% |
| 17 | Americana Partners, LLC | 41,840 | $43,514 | 0.0% | 0.1% | +53.2% |
| 18 | Chicago Partners Investment Group LLC | 41,048 | $32,843 | 0.0% | 0.1% | 0.0% |
| 19 | Prime Capital Investment Advisors, LLCNEW | 36,111 | $37,555 | 0.0% | 0.1% | new |
| 20 | SteelPeak Wealth, LLC | 33,000 | $34,320 | 0.0% | 0.1% | +153.8% |
| 21 | Qube Research & Technologies LtdNEW | 30,787 | $32,018 | 0.0% | 0.1% | new |
| 22 | Savant Capital, LLCNEW | 30,528 | $23,315 | 0.0% | 0.1% | new |
| 23 | Ancora Advisors LLCNEW | 30,000 | $31,200 | 0.0% | 0.1% | new |
| 24 | Global Retirement Partners, LLCNEW | 19,316 | $20,089 | 0.0% | 0.1% | new |
| 25 | Cane Capital Partners, LLC | 18,000 | $18,720 | 0.0% | 0.1% | 0.0% |
Source: SEC Form 13F-HR filings (institutional managers over $100M in US-listed positions). 13Fs disclose long positions only, up to 45 days after quarter end; each manager's latest filed quarter is shown per row and dollar values are the manager's filed marks. Aggregates labeled "2026 filers" count only managers whose latest book is a 2026 quarter. Related: valuation · options positioning · supply chain. Research, not investment advice.