Stocks / SION vs TSHA

SION vs TSHA: Which Stock Is the Better Buy?

Sionna Therapeutics, Inc. and Taysha Gene Therapies, Inc. side by side — fundamentals from SEC filings, refreshed nightly. Sector: Healthcare.

TSHA is the larger company ($1.6B vs $1.6B). On the fundamentals, SION has the stronger return on equity (-24.5% vs -44.1%). On the filings, SION carries fewer potential red flags (0 vs 2). Full numbers below — the stronger figure on each row is in green.

AI verdict — SION vs TSHA, read from the filings

The stronger business, the cheaper stock, and the risks — synthesised from both companies’ SEC filings, every figure computed not guessed. Not investment advice.

 Sionna Therapeutics, Inc. (SION)Taysha Gene Therapies, Inc. (TSHA)
Market cap$1.6B$1.6B
Revenue (latest FY)$0$9.77M
Net income (latest FY)$-75.27M$-109.00M
Revenue growth (5y CAGR)
Net margin-1115.3%
Return on equity-24.5%-44.1%
P/E ratio
Dividend yield
Profitable years (of last 10)00
Positive free cash flowNoNo

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Use the filing period and source shown by each tool before treating two figures as comparable.

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See the full SION vs TSHA breakdown

Both companies across 19 years of income statement, balance sheet and cash flow — with ratios, health checks and Ask, the SEC-grounded research assistant. Free, no account needed.

Open SION's full financials →   Open TSHA's full financials →

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Frequently asked questions

Which is bigger, SION or TSHA?

Taysha Gene Therapies, Inc. is larger by market capitalization — $1.6B versus $1.6B.

Which grows faster, SION or TSHA?

Five-year growth data is not available for both companies.

Where does this data come from?

All figures are computed from official SEC filings (10-K), refreshed nightly. This is a data comparison, not investment advice.

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