SION
Sionna Therapeutics, Inc.Open4.46−0.23 −4.90%USD
NasdaqGM · as of Oct 13, 12:41 ET · 15m delay
Open
4.69
Prev close
4.69
Day range
4.434.80
52-week range
4.0154.97
Volume
296.29K0.13×
Mkt cap
201.37M
P/E ttm
—
Fwd P/E
-2.00
EPS ttm
-2.16
Div yield
0.00%
Earnings
Aug 6, 2026
From 52w high
−91.89%
SION shareholders
SION Ownership
13F / N-PORT filings via Yahoo
Institutions
99.2%
107.7% of the float
Insiders
7.9%
officers and directors
Institutional holders
202
filing positions
Top 10 institutions
73.8%
3 adding · 2 trimming
Top Institutions
| Holder | % held | Shares | Value | Change | As of |
|---|---|---|---|---|---|
| RA Capital Management, L.P. | 21.91% | 9.91M | $44.18M | 0.0% | Jun 30, 2026 |
| TPG GP A, LLC | 14.37% | 6.49M | $28.97M | 0.0% | Jun 30, 2026 |
| Viking Global Investors, L.P. | 7.07% | 3.20M | $14.25M | 0.0% | Jun 30, 2026 |
| Atlas Venture Life Science Advisors, LLC | 6.63% | 3.00M | $13.36M | 0.0% | Jun 30, 2026 |
| Orbimed Advisors LLC. | 5.65% | 2.56M | $11.40M | −27.6% | Jun 30, 2026 |
| Enavate Sciences Gp, LLC | 5.48% | 2.48M | $11.05M | 0.0% | Jun 30, 2026 |
| Adage Capital Partners GP L.L.C. | 3.54% | 1.60M | $7.14M | +966.7% | Jun 30, 2026 |
| JPMORGAN CHASE & CO | 3.30% | 1.49M | $6.65M | +1.7% | Jun 30, 2026 |
| Blackrock Inc. | 3.26% | 1.47M | $6.58M | +13.8% | Jun 30, 2026 |
| Jennison Associates LLC | 2.59% | 1.17M | $5.23M | −19.2% | Jun 30, 2026 |
Top Funds
| Holder | % held | Shares | Value | Change | As of |
|---|---|---|---|---|---|
| VANGUARD INDEX FUNDS-Vanguard Total Stock Market Index Fund | 2.07% | 934.64K | $4.17M | +10.9% | Jun 30, 2026 |
| SPDR SERIES TRUST-State Street SPDR S&P Biotech ETF | 1.51% | 683.72K | $3.05M | +7.5% | Aug 31, 2026 |
| Prudential Sector Funds, Inc.-PGIM Jennison Health Sciences Fund | 1.44% | 651.05K | $2.90M | 0.0% | May 31, 2026 |
| JPMorgan Trust II-JPMorgan Small Cap Growth Fund | 1.16% | 524.28K | $2.34M | −5.0% | Jun 30, 2026 |
| MUTUAL FUND SERIES TRUST-Eventide Healthcare & Life Sciences Fund | 1.05% | 474.97K | $2.12M | −26.3% | Jun 30, 2026 |
| iShares Trust-iShares Russell 2000 ETF | 1.05% | 476.66K | $2.13M | +0.7% | Aug 31, 2026 |
| T. Rowe Price Health Sciences Fund, Inc. | 0.64% | 287.64K | $1.28M | −47.5% | Jun 30, 2026 |
| abrdn Healthcare Investors | 0.45% | 201.74K | $899.74K | −49.1% | Jun 30, 2026 |
| Fidelity Salem Street Trust-Fidelity Small Cap Index Fund | 0.45% | 201.84K | $900.20K | +0.8% | Jul 31, 2026 |
| iShares Trust-iShares Biotechnology ETF | 0.44% | 198.25K | $884.22K | +2.5% | Aug 31, 2026 |
Institutions report quarterly, up to 45 days after the quarter ends, so these positions can be months old. Change compares the share count with the holder's previous filing. Insider transactions are on the overview page (INSD).