SION Institutional Ownership
Sionna Therapeutics, Inc.
1W: -6.8%
1M: -24.4%
3M: -91.4%
YTD: -90.1%
1Y: -90.1%
$3.87
+0.18 (+4.88%)
Weekly Expected Move ±7.3%
$3
$3
$4
$4
$4
Credit Risk of going bust: higher than 96% of companies Debt: 4.4% of company value Bonds: none of note held by US funds details ▾
Of US companies ranked in the riskiest tenth, about 1 in 20 filed for bankruptcy within a year (2020-2025).
If the stock fell to about $0.07 (down 98%), Sionna Therapeutics, Inc. would be worth roughly what it owes.
Total debt $8.1M against a stock market value of $174.7M.
Distance to default 0.25 (Merton model): prices to 2026-10-27, balance sheet 2026-06-30, debt counted $4.0M (short-term plus half of long-term), stock volatility 255.7%; Altman Z'' 14.89. A ranking and a back-test, not a forecast.
US fund filings (SEC N-PORT) show under $25M of this company's bonds, so there is no bond page. Its debt may be bank loans or privately placed. How these are computed.
If the stock fell to about $0.07 (down 98%), Sionna Therapeutics, Inc. would be worth roughly what it owes.
Total debt $8.1M against a stock market value of $174.7M.
Distance to default 0.25 (Merton model): prices to 2026-10-27, balance sheet 2026-06-30, debt counted $4.0M (short-term plus half of long-term), stock volatility 255.7%; Altman Z'' 14.89. A ranking and a back-test, not a forecast.
US fund filings (SEC N-PORT) show under $25M of this company's bonds, so there is no bond page. Its debt may be bank loans or privately placed. How these are computed.
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Institutional Ownership — SION
161
Institutional Holders
+31 vs prior quarter
0.0%
Ownership
+0.00pp
$2B
Total Invested
38
New Positions
57
Increased
48
Reduced
9
Closed
1.67
Put/Call Ratio
Ownership Trends
Top Institutional Holders (167 total)
| # | Holder | Shares | Value | Change | Change % | Holding Period | Filing |
|---|---|---|---|---|---|---|---|
| 1 | RA CAPITAL MANAGEMENT, L.P. | 9,905,045 | $38M | — | +0.0% | 6Q | SEC ↗ |
| 2 | TPG GP A, LLC | 6,494,962 | $25M | — | +0.0% | 6Q | SEC ↗ |
| 3 | VIKING GLOBAL INVESTORS LP | 3,195,181 | $12M | — | +0.0% | 6Q | SEC ↗ |
| 4 | Atlas Venture Life Science Advisors, L | 2,995,602 | $12M | — | +0.0% | 6Q | SEC ↗ |
| 5 | ORBIMED ADVISORS LLC | 2,555,877 | $10M | -974,825 | -27.6% | 6Q | SEC ↗ |
| 6 | ENAVATE SCIENCES GP, LLC | 2,478,030 | $10M | — | +0.0% | 6Q | SEC ↗ |
| 7 | ADAGE CAPITAL PARTNERS GP, L.L.C. | 1,600,000 | $6M | +1,450,000 | +966.7% | 2Q | SEC ↗ |
| 8 | JPMORGAN CHASE & CO | 1,490,508 | $6M | +25,494 | +1.7% | 6Q | SEC ↗ |
| 9 | BlackRock, Inc. | 1,474,769 | $6M | +178,902 | +13.8% | 6Q | SEC ↗ |
| 10 | JENNISON ASSOCIATES LLC | 1,172,133 | $5M | -279,087 | -19.2% | 6Q | SEC ↗ |
| 11 | CITADEL ADVISORS LLC | 1,147,636 | $4M | -19,295 | -1.7% | 6Q | SEC ↗ |
| 12 | VANGUARD CAPITAL MANAGEMENT LLC | 1,132,001 | $4M | +102,504 | +10.0% | 2Q | SEC ↗ |
| 13 | STATE STREET CORP | 1,021,534 | $4M | +265,307 | +35.1% | 6Q | SEC ↗ |
| 14 | PERCEPTIVE ADVISORS LLC | 905,000 | $4M | +246,561 | +37.4% | 6Q | SEC ↗ |
| 15 | DEERFIELD MANAGEMENT COMPANY, L.P. | 680,916 | $3M | -289,674 | -29.8% | 6Q | SEC ↗ |
| 16 | Siren, L.L.C. | 610,515 | $2M | +310,515 | +103.5% | 6Q | SEC ↗ |
| 17 | PRICE T ROWE ASSOCIATES INC /MD | 478,016 | $2M | -278,360 | -36.8% | 6Q | SEC ↗ |
| 18 | EVENTIDE ASSET MANAGEMENT, LLC | 474,981 | $2M | -170,549 | -26.4% | 3Q | SEC ↗ |
| 19 | GEODE CAPITAL MANAGEMENT, LLC | 457,145 | $2M | +67,273 | +17.3% | 6Q | SEC ↗ |
| 20 | Casdin Capital, LLC NEW | 400,000 | $2M | — | +0.0% | 1Q | SEC ↗ |
| 21 | BAKER BROS. ADVISORS LP | 400,000 | $2M | — | +0.0% | 6Q | SEC ↗ |
| 22 | GOLDMAN SACHS GROUP INC | 388,810 | $2M | +125,636 | +47.7% | 6Q | SEC ↗ |
| 23 | Driehaus Capital Management LLC | 385,447 | $1M | +308,814 | +403.0% | 6Q | SEC ↗ |
| 24 | FRANKLIN RESOURCES INC | 290,113 | $1M | +114,630 | +65.3% | 6Q | SEC ↗ |
| 25 | Aberdeen Group plc | 284,138 | $1M | -280,037 | -49.6% | 6Q | SEC ↗ |
| 26 | FMR LLC | 278,292 | $1M | +196,897 | +241.9% | 4Q | SEC ↗ |
| 27 | MILLENNIUM MANAGEMENT LLC | 276,733 | $1M | +136,092 | +96.8% | 6Q | SEC ↗ |
| 28 | Candriam S.C.A. | 233,208 | $903K | -3,605 | -1.5% | 2Q | SEC ↗ |
| 29 | VANGUARD PORTFOLIO MANAGEMENT LLC | 222,949 | $863K | +80,868 | +56.9% | 2Q | SEC ↗ |
| 30 | Kalehua Capital Management LLC | 197,072 | $763K | — | +0.0% | 3Q | SEC ↗ |
| 31 | Longaeva Partners L.P. | 196,352 | $760K | +183,659 | +1446.9% | 4Q | SEC ↗ |
| 32 | Artisan Partners Limited Partnership NEW | 189,498 | $733K | — | +0.0% | 1Q | SEC ↗ |
| 33 | Ensign Peak Advisors, Inc | 184,532 | $714K | -71,104 | -27.8% | 3Q | SEC ↗ |
| 34 | Soleus Capital Management, L.P. | 177,687 | $688K | -115,813 | -39.5% | 6Q | SEC ↗ |
| 35 | NORTHERN TRUST CORP | 154,476 | $598K | +37,700 | +32.3% | 6Q | SEC ↗ |
| 36 | MORGAN STANLEY | 151,047 | $585K | +18,024 | +13.5% | 6Q | SEC ↗ |
| 37 | Sofinnova Investments, Inc. NEW | 144,432 | $559K | — | +0.0% | 1Q | SEC ↗ |
| 38 | Qube Research & Technologies Ltd | 140,309 | $543K | +98,067 | +232.2% | 2Q | SEC ↗ |
| 39 | Alyeska Investment Group, L.P. | 136,222 | $527K | — | +0.0% | 6Q | SEC ↗ |
| 40 | GordonMD Global Investments LP | 136,000 | $526K | — | +0.0% | 2Q | SEC ↗ |
| 41 | Sixth Street Partners Management Compa NEW | 129,753 | $502K | — | +0.0% | 1Q | SEC ↗ |
| 42 | CHARLES SCHWAB INVESTMENT MANAGEMENT I | 129,753 | $502K | +9,500 | +7.9% | 6Q | SEC ↗ |
| 43 | Sio Capital Management, LLC | 127,808 | $495K | -166,532 | -56.6% | 2Q | SEC ↗ |
| 44 | Ishara Investments LP | 123,000 | $476K | +73,800 | +150.0% | 2Q | SEC ↗ |
| 45 | VANGUARD FIDUCIARY TRUST CO | 121,442 | $470K | +9,267 | +8.3% | 2Q | SEC ↗ |
| 46 | Artia Global Partners LP | 119,741 | $463K | — | +0.0% | 3Q | SEC ↗ |
| 47 | UBS Group AG | 116,206 | $450K | -31,435 | -21.3% | 6Q | SEC ↗ |
| 48 | First Turn Management, LLC NEW | 110,493 | $428K | — | +0.0% | 1Q | SEC ↗ |
| 49 | CITIGROUP INC | 110,163 | $426K | +92,105 | +510.1% | 5Q | SEC ↗ |
| 50 | D. E. Shaw & Co., Inc. NEW | 101,644 | $393K | — | +0.0% | 1Q | SEC ↗ |
Recent Activity
New Positions (20)
| Holder | Shares | Value |
|---|---|---|
| Casdin Capital, LLC | 400,000 | $2M |
| Artisan Partners Limited Partnershi | 189,498 | $733K |
| Sofinnova Investments, Inc. | 144,432 | $559K |
| Sixth Street Partners Management Co | 129,753 | $502K |
| First Turn Management, LLC | 110,493 | $428K |
| D. E. Shaw & Co., Inc. | 101,644 | $393K |
| MUTUAL OF AMERICA CAPITAL MANAGEMEN | 35,968 | $139K |
| Swiss National Bank | 27,000 | $104K |
| Quadrature Capital Ltd | 26,023 | $101K |
| Trexquant Investment LP | 23,810 | $92K |
| TUDOR INVESTMENT CORP ET AL | 22,575 | $87K |
| Susquehanna Portfolio Strategies, L | 18,034 | $70K |
| Shay Capital LLC | 18,000 | $70K |
| Engineers Gate Manager LP | 15,603 | $60K |
| MARSHALL WACE, LLP | 12,599 | $49K |
| Jump Financial, LLC | 10,473 | $41K |
| VANGUARD ASSET MANAGEMENT, Ltd | 9,535 | $37K |
| Jupiter Topco LLC | 6,400 | $25K |
| STATE BOARD OF ADMINISTRATION OF FL | 5,215 | $20K |
| SEI INVESTMENTS CO | 5,158 | $20K |
Sold Out (17)
| Holder | Prev Shares | Prev Value |
|---|---|---|
| POLEN CAPITAL MANAGEMENT LLC | 26,775 | $104K |
| SG Americas Securities, LLC | 10,691 | $41K |
| SUSQUEHANNA INTERNATIONAL GROUP, LL | 7,310 | $28K |
| ExodusPoint Capital Management, LP | 7,190 | $28K |
| Hudson Bay Capital Management LP | 6,180 | $24K |
| AMERICAN CENTURY COMPANIES INC | 6,180 | $24K |
| DARK FOREST CAPITAL MANAGEMENT LP | 5,991 | $23K |
| TWO SIGMA INVESTMENTS, LP | 5,500 | $21K |
| ProShare Advisors LLC | 4,903 | $19K |
| Cygnus Capital Advisors, LLC | 3,800 | $15K |
| Balyasny Asset Management L.P. | 1,406 | $5K |
| AMALGAMATED BANK | 504 | $2K |
| Daiwa Securities Group Inc. | 149 | $1K |
| Aster Capital Management (DIFC) Ltd | 37 | $0K |
| SIGNATUREFD, LLC | 24 | $0K |
| Root Financial Partners, LLC | 10 | $0K |
| MAI Capital Management | 2 | $0K |
Biggest Increases (20)
| Holder | Added | Change % | Total Shares |
|---|---|---|---|
| ADAGE CAPITAL PARTNERS GP, L.L.C. | +1,450,000 | +966.7% | 1,600,000 |
| Siren, L.L.C. | +310,515 | +103.5% | 610,515 |
| Driehaus Capital Management LLC | +308,814 | +403.0% | 385,447 |
| STATE STREET CORP | +265,307 | +35.1% | 1,021,534 |
| PERCEPTIVE ADVISORS LLC | +246,561 | +37.4% | 905,000 |
| FMR LLC | +196,897 | +241.9% | 278,292 |
| Longaeva Partners L.P. | +183,659 | +1446.9% | 196,352 |
| BlackRock, Inc. | +178,902 | +13.8% | 1,474,769 |
| MILLENNIUM MANAGEMENT LLC | +136,092 | +96.8% | 276,733 |
| GOLDMAN SACHS GROUP INC | +125,636 | +47.7% | 388,810 |
| FRANKLIN RESOURCES INC | +114,630 | +65.3% | 290,113 |
| VANGUARD CAPITAL MANAGEMENT LLC | +102,504 | +10.0% | 1,132,001 |
| Qube Research & Technologies Ltd | +98,067 | +232.2% | 140,309 |
| CITIGROUP INC | +92,105 | +510.1% | 110,163 |
| Walleye Capital LLC | +82,250 | +544.8% | 97,347 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | +80,868 | +56.9% | 222,949 |
| Ishara Investments LP | +73,800 | +150.0% | 123,000 |
| GEODE CAPITAL MANAGEMENT, LLC | +67,273 | +17.3% | 457,145 |
| DEUTSCHE BANK AG | +40,104 | +302.7% | 53,353 |
| BANK OF AMERICA CORP /DE | +38,038 | +74.8% | 88,908 |