SIONNA THERAPEUTICS INC SION
$43.99
+5.6% 52w: $14.10 – $45.95
Latest 13F among current holders filed 37 days ago (May 29, 2026)
Price — last 12 months
research preview data14.1030.0345.95
Jun 20, 2025 Jul 2, 2026
Institutional holders
122
+21 QoQ
13F value
$1.82B
+0.9% QoQ
Smart-money holders
23
signal tier ≥ 2
New smart buyers
5
Q1 2026
Institutional value by quarter
Number of holders
Who owns SION?
Q1 2026 filings| Fund | Type | Shares | Value | % of fund | Change |
|---|---|---|---|---|---|
| RA CAPITAL MANAGEMENT, L.P. ★2 | Fundamental diversified | 9.9M | $397.1M | 4.2% | Held |
| TPG GP A, LLC ★2 | Fundamental concentrated | 6.5M | $260.4M | 7.1% | -3.7% |
| ORBIMED ADVISORS LLC ★2 | Fundamental diversified | 3.5M | $141.5M | 3.2% | -0.9% |
| VIKING GLOBAL INVESTORS LP ★2 | Fundamental diversified | 3.2M | $128.1M | 0.4% | Held |
| Atlas Venture Life Science Advisors, LLC ★3 | Fundamental concentrated | 3.0M | $120.1M | 15.2% | Held |
| ENAVATE SCIENCES GP, LLC ★2 | Fundamental diversified | 2.5M | $99.3M | 28.3% | Held |
| JENNISON ASSOCIATES LLC | Other | 1.5M | $58.2M | 0.0% | +30.1% |
| JPMORGAN CHASE & CO | Bank broker | 1.5M | $53.7M | 0.0% | +18.9% |
| BlackRock, Inc. | Index provider | 1.3M | $52.0M | 0.0% | +0.3% |
| CITADEL ADVISORS LLC | Multistrat pod | 1.2M | $46.8M | 0.0% | +7.3% |
| VANGUARD CAPITAL MANAGEMENT LLC | Diversified mechanical | 1.0M | $41.3M | 0.0% | — |
| DEERFIELD MANAGEMENT COMPANY, L.P. | Quant stat arb | 970.6K | $38.9M | 0.5% | Held |
| PRICE T ROWE ASSOCIATES INC /MD/ | Diversified mechanical | 756.4K | $30.3M | 0.0% | -9.0% |
| STATE STREET CORP | Index provider | 756.2K | $30.3M | 0.0% | +9.1% |
| PERCEPTIVE ADVISORS LLC ★2 | Fundamental diversified | 658.4K | $26.4M | 0.5% | -44.2% |
| EVENTIDE ASSET MANAGEMENT, LLC | Other | 645.5K | $25.9M | 0.4% | +1.0% |
| Aberdeen Group plc | Other | 564.2K | $22.6M | 0.0% | -32.8% |
| BAKER BROS. ADVISORS LP ★2 | Fundamental diversified | 400.0K | $16.0M | 0.1% | Held |
| Kalehua Capital Management LLC ★2 | Fundamental concentrated | 394.1K | $15.8M | 6.1% | +100.0% |
| GEODE CAPITAL MANAGEMENT, LLC | Index provider | 389.9K | $15.6M | 0.0% | +2.6% |
| Siren, L.L.C. ★2 | Fundamental diversified | 300.0K | $12.0M | 0.3% | Held |
| Sio Capital Management, LLC ★2 | Fundamental concentrated | 294.3K | $11.8M | 1.7% | New |
| Soleus Capital Management, L.P. ★2 | Fundamental diversified | 293.5K | $11.8M | 0.5% | +9.3% |
| GOLDMAN SACHS GROUP INC | Bank broker | 263.2K | $10.6M | 0.0% | +625.6% |
| Ensign Peak Advisors, Inc | Diversified mechanical | 255.6K | $10.2M | 0.0% | +220.1% |
| Candriam S.C.A. | Other | 236.8K | $9.5M | 0.0% | New |
| FRANKLIN RESOURCES INC | Long only active | 175.5K | $7.0M | 0.0% | Held |
| ADAGE CAPITAL PARTNERS GP, L.L.C. | Other | 150.0K | $6.0M | 0.0% | New |
| UBS Group AG | Bank broker | 147.6K | $5.9M | 0.0% | +65.6% |
| VANGUARD PORTFOLIO MANAGEMENT LLC | Diversified mechanical | 142.1K | $5.7M | 0.0% | — |
| SUPERSTRING CAPITAL MANAGEMENT LP ★2 | Fundamental concentrated | 141.0K | $5.7M | 4.0% | -21.9% |
| MILLENNIUM MANAGEMENT LLC | Multistrat pod | 140.6K | $5.6M | 0.0% | +74.6% |
| Point72 Asset Management, L.P. | Multistrat pod | 136.5K | $5.5M | 0.0% | New |
| Alyeska Investment Group, L.P. | Quant stat arb | 136.2K | $5.5M | 0.0% | Held |
| GordonMD Global Investments LP ★3 | Fundamental concentrated | 136.0K | $5.5M | 3.8% | New |
| MORGAN STANLEY | Bank broker | 133.0K | $5.3M | 0.0% | +166.7% |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | Index provider | 120.3K | $4.8M | 0.0% | -2.8% |
| Artia Global Partners LP ★2 | Fundamental concentrated | 119.7K | $4.8M | 1.1% | Held |
| NORTHERN TRUST CORP | Index provider | 116.8K | $4.7M | 0.0% | +4.2% |
| VANGUARD FIDUCIARY TRUST CO | Diversified mechanical | 112.2K | $4.5M | 0.0% | — |
| Rock Springs Capital Management LP ★2 | Fundamental diversified | 99.4K | $4.0M | 0.2% | Held |
| Rhenman & Partners Asset Management AB | Other | 87.5K | $3.5M | 0.4% | New |
| TD Asset Management Inc | Diversified mechanical | 83.0K | $3.3M | 0.0% | -26.8% |
| AMERIPRISE FINANCIAL INC | Bank broker | 82.0K | $3.3M | 0.0% | -19.4% |
| FMR LLC | Long only active | 81.4K | $3.3M | 0.0% | +21096.6% |
| Driehaus Capital Management LLC | Other | 76.6K | $3.1M | 0.0% | -8.6% |
| STEMPOINT CAPITAL LP ★2 | Fundamental concentrated | 73.1K | $2.9M | 0.3% | New |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE | Diversified mechanical | 64.5K | $2.6M | 0.0% | -7.2% |
| BANK OF AMERICA CORP /DE/ | Bank broker | 50.9K | $2.0M | 0.0% | +16.8% |
| Integral Health Asset Management, LLC ★2 | Fundamental diversified | 50.0K | $2.0M | 0.1% | New |
Exits are not a bearish signal: our backtest shows stocks specialists exit keep outperforming for 3+ quarters — selling usually means profit-taking, not a forecast.
Explore related
Top funds holding SION
More healthcare stocks held by institutions