Rein TherapeuticsRNTX
13F holders, Q4 2025 (December 31)At the end of Q4 2025, 48 institutions reported holding Rein Therapeutics Inc. (RNTX) in their 13F filings, up 8 from Q3 2025. 12 opened new positions and 4 sold out. The largest holders were Voss Capital, LP ($4.9M), BIOS Capital Management, LP ($2.0M) and Vanguard Group Inc. ($1.4M). 2 famous investors held it, including Ken Griffin (0.0% of Citadel Advisors's portfolio) and Jim Simons / Peter Brown (0.0% of Renaissance Technologies's portfolio).
- Company
- Rein Therapeutics Inc.
- CUSIP
- 00887A204
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q3 2025 → Q4 2025
| Institutions | Total Value | |
|---|---|---|
| New Positions | 12 | $509K |
| Exits | 4 | $91K |
All 13F filers, Q3 2025 → Q4 2025: 2,532,316 shares bought and 217,483 shares sold, net +2,314,833 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 48 holders
| Voss Capital, LP | 0.26% | Add +59.2% | 4,243,969 | $4.9M |
| BIOS Capital Management, LP | 2.37% | No change | 1,690,751 | $2.0M |
| Vanguard Group Inc. | 0.00% | Reduce -0.2% | 1,165,807 | $1.4M |
| University of Texas/Texas Am Investment Management Co. | 0.08% | No change | 511,610 | $593K |
| Prosight Management, LP | 0.11% | Reduce -22.1% | 442,600 | $513K |
| Cable Car Capital, LP | 0.03% | No change | 420,000 | $487K |
| Geode Capital Management, LLC | 0.00% | Add +15.1% | 284,555 | $330K |
| Texas Capital Bank Wealth Management Services Inc | 0.02% | Add +901.6% | 262,125 | $304K |
| Sigma Planning Corp | 0.01% | Reduce -2.6% | 247,277 | $299K |
| Gagnon Securities LLC | 0.06% | Add +5.0% | 240,220 | $279K |
| Senvest Management, LLC | 0.01% | No change | 230,895 | $268K |
| ABS Direct Equity Fund LLC | 0.17% | New | 125,000 | $145K |
| Citadel Advisors | 0.00% | Add +325.8% | 120,083 | $139K |
| Rock Creek Group LLC | 0.01% | New | 100,000 | $116K |
| State Street Corp. | 0.00% | Add +374.3% | 75,904 | $88K |
| Jane Street Group, LLC | 0.00% | New | 61,960 | $72K |
| Susquehanna International Group, LLP | 0.00% | Add +91.2% | 58,995 | $68K |
| BlackRock, Inc. | 0.00% | Add +4.0% | 55,006 | $64K |
| Northwestern Mutual Wealth Management Co. | 0.00% | No change | 42,440 | $49K |
| Two Sigma Investments, LP | 0.00% | New | 41,709 | $48K |
| Northern Trust Corp. | 0.00% | Add +57.1% | 40,469 | $47K |
| Chicago Partners Investment Group LLC | 0.00% | No change | 31,048 | $43K |
| HRT Financial LP | 0.00% | New | 33,237 | $38K |
| Meridian Wealth Advisors, LLC | 0.00% | No change | 28,486 | $33K |
| Renaissance Technologies | 0.00% | Add +24.1% | 22,700 | $26K |
| Gleason Group, Inc. | 0.00% | No change | 22,389 | $26K |
| Ancora Advisors LLC | 0.00% | New | 20,000 | $23K |
| Global Retirement Partners, LLC | 0.00% | Add +168.3% | 19,316 | $22K |
| Cane Capital Partners, LLC | 0.01% | — | 18,000 | $21K |
| KG Capital Management | 0.01% | No change | 18,000 | $21K |
| Mercer Global Advisors Inc. | 0.00% | Add +71.7% | 17,961 | $21K |
| Americana Partners, LLC | 0.00% | No change | 17,302 | $20K |
| Two Sigma Securities, LLC | 0.00% | New | 17,254 | $20K |
| Annandale Capital, LLC | 0.00% | New | 15,026 | $17K |
| Virtu Financial LLC | 0.00% | New | 13,663 | $16K |
| Cetera Investment Advisers | 0.00% | No change | 12,364 | $14K |
| HighTower Advisors, LLC | 0.00% | New | 10,000 | $12K |
| UBS Group AG | 0.00% | Add +11365.1% | 9,516 | $11K |
| Rockefeller Capital Management L.P. | 0.00% | No change | 5,097 | $6K |
| New Millennium Group LLC | 0.00% | New | 2,038 | $2K |
| Tower Research Capital LLC (TRC) | 0.00% | Reduce -61.1% | 1,957 | $2K |
| JFS Wealth Advisors, LLC | 0.00% | No change | 1,590 | $2K |
| US Bancorp \de | 0.00% | No change | 1,250 | $1K |
| Osaic Holdings, Inc. | 0.00% | Add +100.0% | 70 | $81 |
| Bank of America Corp. | 0.00% | Reduce -58.0% | 42 | $49 |
| Blue Trust, Inc. | 0.00% | No change | 20 | $23 |
| Acadian Asset Management LLC | 0.00% | No change | 17 | $0 |
| Motiv8 Investments LLC | 0.00% | New | 25 | $0 |
"% of holder's portfolio" is RNTX's weight in each manager's 13F, not the share of Rein Therapeutics Inc. the manager owns.