RNTX — REIN THERAPEUTICS INC
As of Q2 2026, 8 SEC-registered investment managers reported holding RNTX (REIN THERAPEUTICS INC) in their latest 13F filings, with a combined reported value of $3.98M across 3.83M shares. That is +661.2% by share count (+3.33M shares) versus the previous quarter, while reported value moved +508.9%. Ownership is concentrated: the five largest holders account for 97.6% of reported value and the top ten for 100.0%.
Compared with the prior quarter, 3 opened new positions, 4 added to existing stakes, 1 trimmed, 1 exited entirely. 13F holdings are quarter-end snapshots, so these moves reflect positioning as of Q2 2026, not real-time trading.
RNTX is classified in the Health Care sector.
All figures on this page are computed from SEC Form 13F quarterly filings. 13F filers disclose long positions of $100,000 or more within 45 days of quarter end; short positions, options overlays and intra-quarter trades are not included, so treat the numbers as a quarterly snapshot of institutional ownership rather than real-time positioning.
Q2 2026 — 8 funds
| Fund | Shares | Value | Portfolio Weight | Change |
|---|---|---|---|---|
| Citadel Advisors history | 2.44M | $2.54M | 0.00% | New |
| Geode Capital Management history | 733.14K | $762.54K | 0.00% | Add |
| BlackRock Inc history | 326.20K | $339.25K | 0.00% | Add |
| Northern Trust Corp history | 159.72K | $166.11K | 0.00% | Add |
| Goldman Sachs Group history | 79.78K | $82.98K | 0.00% | New |
| UBS Group AG history | 57.41K | $59.71K | 0.00% | Add |
| Renaissance Technologies history | 19.00K | $19.76K | 0.00% | Reduce |
| Morgan Stanley history | 14.32K | $14.89K | 0.00% | New |
Q1 2026 — 6 funds
| Fund | Shares | Value | Portfolio Weight | Change |
|---|---|---|---|---|
| Geode Capital Management history | 344.69K | $448.19K | 0.00% | Add |
| BlackRock Inc history | 68.53K | $89.09K | 0.00% | Add |
| Northern Trust Corp history | 64.14K | $83.38K | 0.00% | Add |
| Renaissance Technologies history | 24.50K | $31.85K | 0.00% | Add |
| UBS Group AG history | 1.02K | $1.33K | 0.00% | Reduce |
| Wells Fargo & Co history | 20 | $26 | 0.00% | New |
Q4 2025 — 9 funds
| Fund | Shares | Value | Portfolio Weight | Change |
|---|---|---|---|---|
| Vanguard Group history | 1.17M | $1.35M | 0.00% | Hold |
| Geode Capital Management history | 284.56K | $330.16K | 0.00% | Add |
| Citadel Advisors history | 120.08K | $139.30K | 0.00% | Add |
| BlackRock Inc history | 55.01K | $63.81K | 0.00% | Add |
| Two Sigma Investments history | 41.71K | $48.38K | 0.00% | New |
| Northern Trust Corp history | 40.47K | $46.94K | 0.00% | Add |
| Renaissance Technologies history | 22.70K | $26.33K | 0.00% | Add |
| UBS Group AG history | 9.52K | $11.04K | 0.00% | Add |
| Bank of America Corp history | 42 | $49 | 0.00% | Reduce |
Q3 2025 — 8 funds
| Fund | Shares | Value | Portfolio Weight | Change |
|---|---|---|---|---|
| Vanguard Group history | 1.17M | $1.34M | 0.00% | Add |
| Geode Capital Management history | 247.31K | $283.25K | 0.00% | Add |
| BlackRock Inc history | 52.87K | $60.54K | 0.00% | Add |
| Citadel Advisors history | 28.20K | $32.29K | 0.00% | Reduce |
| Northern Trust Corp history | 25.76K | $29.50K | 0.00% | Hold |
| Renaissance Technologies history | 18.30K | $20.95K | 0.00% | New |
| Bank of America Corp history | 100 | $115 | 0.00% | Reduce |
| UBS Group AG history | 83 | $95 | 0.00% | Reduce |
Q2 2025 — 11 funds
| Fund | Shares | Value | Portfolio Weight | Change |
|---|---|---|---|---|
| Vanguard Group history | 884.11K | $1.24M | 0.00% | Add |
| Geode Capital Management history | 245.46K | $343.73K | 0.00% | Hold |
| BlackRock Inc history | 51.44K | $72.01K | 0.00% | Hold |
| BlackRock Inc history | 51.44K | $72.01K | 0.00% | Hold |
| Citadel Advisors history | 47.99K | $67.19K | 0.00% | New |
| Citadel Advisors history | 47.99K | $67.19K | 0.00% | New |
| Northern Trust Corp history | 25.76K | $36.07K | 0.00% | Hold |
| UBS Group AG history | 15.70K | $21.98K | 0.00% | Add |
| Wells Fargo & Co history | 1.69K | $2.36K | 0.00% | Add |
| Bank of America Corp history | 262 | $367 | 0.00% | Add |
| Citigroup Inc history | 1 | $1 | 0.00% | New |
Q1 2025 — 12 funds
| Fund | Shares | Value | Portfolio Weight | Change |
|---|---|---|---|---|
| Vanguard Group history | 716.79K | $1.27M | 0.00% | Add |
| Geode Capital Management history | 246.10K | $435.72K | 0.00% | Add |
| BlackRock Inc history | 51.30K | $90.81K | 0.00% | Reduce |
| BlackRock Inc history | 51.30K | $90.81K | 0.00% | Reduce |
| Northern Trust Corp history | 25.76K | $45.60K | 0.00% | Hold |
| Morgan Stanley history | 4.30K | $7.61K | 0.00% | Hold |
| Morgan Stanley history | 4.30K | $7.61K | 0.00% | Hold |
| UBS Group AG history | 2.98K | $5.28K | 0.00% | Reduce |
| Bank of America Corp history | 241 | $427 | 0.00% | Reduce |
| JPMorgan Chase & Co history | 32 | $57 | 0.00% | Add |
| JPMorgan Chase & Co history | 32 | $57 | 0.00% | Add |
| Wells Fargo & Co history | 2 | $4 | 0.00% | New |
New Positions (Q2 2026)
- Citadel Advisors 2.44M sh · $2.54M
- Goldman Sachs Group 79.78K sh · $82.98K
- Morgan Stanley 14.32K sh · $14.89K
Fully Exited (vs previous quarter)
- Wells Fargo & Co sold 20 sh · $26
Fund Position History — shares by quarter (top 15 funds)
| Fund | Q2 2026 | Q1 2026 | Q4 2025 | Q3 2025 | Q2 2025 | Q1 2025 | Q4 2024 | Q3 2024 | Q2 2024 | Q1 2024 | Q4 2023 | Q3 2023 | Q2 2023 | Q1 2023 | Q4 2022 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Citadel Advisors | 2.44M | — | 120.08K | 28.20K | 47.99K | — | — | — | — | 13.81K | — | — | — | — | — |
| Geode Capital Management | 733.14K | 344.69K | 284.56K | 247.31K | 245.46K | 246.10K | 241.44K | 229.82K | 170.45K | 69.76K | 57.29K | 56.51K | 55.05K | 54.80K | 44.49K |
| BlackRock Inc | 326.20K | 68.53K | 55.01K | 52.87K | 51.44K | 51.30K | 78.95K | 51.28K | — | — | — | — | — | — | — |
| Northern Trust Corp | 159.72K | 64.14K | 40.47K | 25.76K | 25.76K | 25.76K | 25.76K | 25.76K | 25.76K | — | — | — | — | — | — |
| Goldman Sachs Group | 79.78K | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| UBS Group AG | 57.41K | 1.02K | 9.52K | 83 | 15.70K | 2.98K | 7.25K | — | 3.15K | 93 | 2.14K | — | 1.36K | 100 | 3.31K |
| Renaissance Technologies | 19.00K | 24.50K | 22.70K | 18.30K | — | — | — | 13.16K | 24.86K | 45.06K | 28.02K | 18.96K | 15.86K | 12.66K | 10.56K |
| Morgan Stanley | 14.32K | — | — | — | — | 4.30K | 4.30K | 5.55K | 1.25K | 1.25K | 1.25K | 1.25K | 1.25K | 1.25K | 1.25K |
| JPMorgan Chase & Co | — | — | — | — | — | 32 | 30 | — | — | — | — | — | — | — | — |
| Two Sigma Investments | — | — | 41.71K | — | — | — | — | — | — | — | — | — | — | — | — |
| Bank of America Corp | — | — | 42 | 100 | 262 | 241 | 284 | 285 | 292 | 125 | 125 | 125 | 125 | 140 | 183 |
| Vanguard Group | — | — | 1.17M | 1.17M | 884.11K | 716.79K | 424.99K | 432.20K | 506.15K | 40.31K | 40.31K | 39.93K | 40.47K | 59.10K | 130.31K |
| Wells Fargo & Co | — | 20 | — | — | 1.69K | 2 | — | 9.54K | — | 31 | 27 | 24 | 24 | 23 | 23 |
| Fidelity Management & Research (FMR) | — | — | — | — | — | — | — | 233 | 233 | 233 | 50 | — | — | — | — |
| Citigroup Inc | — | — | — | — | 1 | — | — | — | — | — | — | — | — | — | — |
▲ Bought Low (fund opened/added, stock rose ≥5% next quarter) ▼ Sold High (fund reduced, stock fell ≥5% next quarter)
Drag / scroll to zoom · Default shows the most recent year · Annotations come from quarterly fund actions in 13F filings · Hover a marker for details