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SION
Sionna Therapeutics, Inc.
NASDAQ· Healthcare· Biotechnology· CUSIP 829401108
$3.80-1.81%Price as of Oct 23, 00:51 UTC · updated once a day, after the close
At a glance
Sionna Therapeutics, Inc. (SION) is listed on NASDAQ and classified in Biotechnology, part of the Healthcare sector. It is headquartered in Waltham, United States and has 59 employees. The company is worth $171.57M. The share price is 93.1% below its 52-week high of $54.97. 4 of the 38 superinvestors we track held it at the end of Q2 2026. The largest position belongs to Andreas Halvorsen (Viking Global Investors), at $140.56M. In that quarter, 1 of them opened or added to the position and 1 reduced it. No open-market insider trades in it were filed over the last 30 days.
Written from the data on this page: SEC filings (13F, Form 4, annual reports) and market prices.
Key metrics
- Market cap
- $171.57M
- P/E
- —
- Forward P/E
- —
- P/B
- 0.6x
- Dividend yield
- 0.00%
- Payout
- —
- EPS
- -$2.12
- ROE
- -32.34%
- Profit margin
- 0.00%
- Revenue growth
- —
- Beta
- —
- 52-week high
- $54.97
- 52-week low
- $3.64
History
Year by year, from the annual reports; dividends from the payments themselves.
Bars are year-end balances; lines are what happened during the year.
Investors holding this
Major managers that reported this stock in their latest 13F.
Price over time
▼ -71.8% over 5Y.
This stock has less than 5 years of price history — the answer would measure a shorter period than the one asked for.
Dividends reinvested, splits accounted for. Past prices say what happened, not what will.
Others in the same sector
Companies of similar size in Healthcare, for comparison. The columns are the same ones above, in the same order.
| Stock | Price | P/E | P/B | Dividend yield | ROE | Market cap |
|---|---|---|---|---|---|---|
| NGENNervgen Pharma Corp | $1.59 | — | 13.9x | 0.00% | -757.48% | $170.96M |
| STROSutro Biopharma Inc | $10.29 | — | — | 0.00% | — | $170.62M |
| YARWYarrow Bioscience, Inc. | $18.31 | — | — | 0.00% | — | $170.36M |
| TRDAEntrada Therapeutics, Inc. | $4.37 |
About the company
- 59
- Waltham, United States