Sionna Therapeutics, Inc. (SION)Healthcare | Biotechnology | Waltham, United States | NasdaqGM
3.89 USD
-0.19
(-4.657%) ⇩
(Oct. 16, 2026, 4 p.m.
EDT)
After hours: 3.87 -0.02 (-0.020%) ⇩ (Oct. 16, 2026, 7:17 p.m. EDT) |
Hot Take ↕ | Oct. 10, 2026, 1:13 a.m. EDT
The investment case for Sionna Therapeutics is currently paralyzed by a stark disconnect between its clinical potential and its financial reality. While the company boasts a fortress-like balance sheet with a current ratio of 20 and negligible debt, allowing it to weather the storm of R&D without immediate distress, the stock is fundamentally broken by years of value destruction. The price has collapsed from nearly $55 to under $5, reflecting a market verdict that the current pipeline execution or commercialization timeline is insufficient to justify a premium valuation. This is not a classic value trap where the business is great but the price is low; rather, the multi-year trajectory indicates a structural failure in the market's assessment of the company's ability to deliver on its cystic fibrosis promises. The short-term outlook remains murky due to this structural uncertainty. Despite recent headlines of breakouts and analyst initiations, the technical picture shows the stock trading well below its 50-day and 200-day averages, indicating persistent selling pressure. The statistical forecasting models offer no directional guidance, citing very low reliability, which aligns with the chaotic nature of biotech price action driven by binary clinical events. Without a confirmed catalyst that can reverse the multi-year decline, the stock lacks the momentum required for a high-conviction entry. Regarding income, there is no dividend to speak of. The company is burning cash, with negative free cash flow and negative returns on equity, meaning capital is being deployed entirely into growth rather than returned to shareholders. The options market confirms this tension: while some traders are hedging against a further collapse with deep puts, others are buying distant calls hoping for a miraculous turnaround, creating a volatile environment unsuitable for steady investors. Until the company demonstrates sustained revenue growth or a definitive shift in the market's perception of its asset value, the long-term rating remains neutral, as the fundamental risks of clinical failure or delayed commercialization still outweigh the safety of the balance sheet. |
| Model | MAE |
|---|---|
| AutoETS ✓ | 0.183443 |
| AutoARIMA | 0.183445 |
| MSTL | 0.200127 |
| AutoTheta | 0.255036 |
Forecast horizon: 45 days | Selected: AutoETS
| Forecast Reliability | |
|---|---|
| Score | 26% |
| H-stat | 10.69 |
| Ljung-Box p | 0.000 |
| Jarque-Bera p | 0.649 |
| Excess Kurtosis | -0.66 |
| Attribute | Value |
|---|---|
| Sector | Healthcare |
| Debt to Equity Ratio | 3.036 |
| Market Cap | 175,876,240 |
| Forward P/E | -1.74 |
| Website | https://www.sionnatx.com |
As of Oct. 10, 2026, 1:13 a.m. EDT: Speculators are aggressively betting on a massive downside event, evidenced by heavy volume and open interest in deep out-of-the-money puts (strikes $30-$40) expiring in late 2026, which dwarf any call activity at those levels. Conversely, there is significant call open interest at strikes far above the current price ($17.50, $55.00), suggesting a 'long gamma' or lottery-ticket strategy where traders are willing to pay for a massive upside move to offset their put exposure, creating a volatile environment with asymmetric risk.
| Attribute | Value |
|---|---|
| 52 Week Change | -0.87919253 |
| Address1 | 21 Hickory Drive |
| Address2 | Suite 500 |
| All Time High | 54.97 |
| All Time Low | 3.775 |
| Ask | 64.74 |
| Ask Size | 2 |
| Audit Risk | 7 |
| Average Daily Volume10 Day | 1,019,610 |
| Average Daily Volume3 Month | 2,223,743 |
| Average Volume | 2,223,743 |
| Average Volume10Days | 1,019,610 |
| Bid | 35.98 |
| Bid Size | 2 |
| Board Risk | 5 |
| Book Value | 5.885 |
| City | Waltham |
| Compensation As Of Epoch Date | 1,767,139,200 |
| Compensation Risk | 9 |
| Country | United States |
| Crypto Tradeable | 0 |
| Currency | USD |
| Current Price | 3.89 |
| Current Ratio | 20.045 |
| Custom Price Alert Confidence | HIGH |
| Date Short Interest | 1,790,726,400 |
| Day High | 4.06 |
| Day Low | 3.775 |
| Debt To Equity | 3.036 |
| Display Name | Sionna Therapeutics |
| Dividend Yield | 0.0 |
| Earnings Timestamp | 1,786,019,400 |
| Earnings Timestamp End | 1,793,881,800 |
| Earnings Timestamp Start | 1,793,881,800 |
| Ebitda | -108,836,000 |
| Ebitda Margins | 0.0 |
| Enterprise To Ebitda | 0.249 |
| Enterprise Value | -27,085,768 |
| Eps Current Year | -2.446 |
| Eps Forward | -2.231 |
| Eps Trailing Twelve Months | -2.16 |
| Esg Populated | 0 |
| Exchange | NGM |
| Exchange Data Delayed By | 15 |
| Exchange Timezone Name | America/New_York |
| Exchange Timezone Short Name | EDT |
| Fifty Day Average | 6.7384 |
| Fifty Day Average Change | -2.8483999 |
| Fifty Day Average Change Percent | -0.4227116 |
| Fifty Two Week Change Percent | -87.91925 |
| Fifty Two Week High | 54.97 |
| Fifty Two Week High Change | -51.08 |
| Fifty Two Week High Change Percent | -0.92923415 |
| Fifty Two Week Low | 3.775 |
| Fifty Two Week Low Change | 0.11500001 |
| Fifty Two Week Low Change Percent | 0.030463578 |
| Fifty Two Week Range | 3.775 - 54.97 |
| Financial Currency | USD |
| First Trade Date Milliseconds | 1,738,938,600,000 |
| Float Shares | 20,474,887 |
| Forward Eps | -2.231 |
| Forward P E | -1.7436128 |
| Free Cashflow | -45,443,752 |
| Full Exchange Name | NasdaqGM |
| Full Time Employees | 59 |
| Fullday Change | -0.21000004 |
| Fullday Change Percent | -5.14706 |
| Fullday Price | 3.89 |
| Gmt Off Set Milliseconds | -14,400,000 |
| Governance Epoch Date | 1,790,812,800 |
| Gross Margins | 0.0 |
| Has Pre Post Market Data | 1 |
| Held Percent Insiders | 0.07877 |
| Held Percent Institutions | 1.01604 |
| Implied Shares Outstanding | 45,212,399 |
| Industry | Biotechnology |
| Industry Disp | Biotechnology |
| Industry Key | biotechnology |
| Ipo Expected Date | 2,025-02-07 |
| Is Earnings Date Estimate | 1 |
| Language | en-US |
| Last Fiscal Year End | 1,767,139,200 |
| Long Business Summary | Sionna Therapeutics, Inc., a clinical-stage biopharmaceutical company, researches and develops medicines for the treatment of cystic fibrosis (CF). It develops galicaftor (SION-2222), a transmembrane domain 1 (TMD1)-directed cystic fibrosis transmembrane conductance regulator (CFTR) that has completed Phase 2 trial; navocaftor (SION-3067), a potentiator that has completed Phase 2 trial; SION-109, an intracellular loop 4 directed CFTR corrector that has completed Phase 1 trial; SION-2851, a TMD1-directed CFTR corrector that has completed Phase 1 trial; SION-451, which is nucleotide-binding domain 1 stabilizer in Phase 1 trial; and SION-719, which is nucleotide-binding domain 1 stabilizer in Phase 2a proof-of-concept trial. The company was formerly known as Sling Therapeutics, Inc. and changed its name to Sionna Therapeutics, Inc. in July 2021. Sionna Therapeutics, Inc. was incorporated in 2019 and is headquartered in Waltham, Massachusetts. |
| Long Name | Sionna Therapeutics, Inc. |
| Market | us_market |
| Market Cap | 175,876,240 |
| Market State | CLOSED |
| Max Age | 86,400 |
| Message Board Id | finmb_1779769831 |
| Most Recent Quarter | 1,782,777,600 |
| Net Income To Common | -97,383,000 |
| Next Fiscal Year End | 1,798,675,200 |
| Non Diluted Market Cap | 248,668,194 |
| Number Of Analyst Opinions | 7 |
| Open | 4.06 |
| Operating Cashflow | -75,916,000 |
| Operating Margins | 0.0 |
| Overall Risk | 7 |
| Phone | 617 819 2020 |
| Post Market Change | -0.02000022 |
| Post Market Change Percent | -0.5141444 |
| Post Market Price | 3.87 |
| Post Market Time | 1,792,192,623 |
| Previous Close | 4.08 |
| Price Eps Current Year | -1.5903516 |
| Price Hint | 4 |
| Price To Book | 0.6610025 |
| Profit Margins | 0.0 |
| Quick Ratio | 19.573 |
| Quote Source Name | Nasdaq Real Time Price |
| Quote Type | EQUITY |
| Recommendation Key | none |
| Region | US |
| Regular Market Change | -0.19 |
| Regular Market Change Percent | -4.65686 |
| Regular Market Day High | 4.06 |
| Regular Market Day Low | 3.775 |
| Regular Market Day Range | 3.775 - 4.06 |
| Regular Market Open | 4.06 |
| Regular Market Previous Close | 4.08 |
| Regular Market Price | 3.89 |
| Regular Market Time | 1,792,180,800 |
| Regular Market Volume | 1,483,533 |
| Return On Assets | -0.21542 |
| Return On Equity | -0.32342 |
| Sand P52 Week Change | 0.13723719 |
| Sector | Healthcare |
| Sector Disp | Healthcare |
| Sector Key | healthcare |
| Share Holder Rights Risk | 8 |
| Shares Outstanding | 45,212,399 |
| Shares Percent Shares Out | 0.084 |
| Shares Short | 3,797,732 |
| Shares Short Previous Month Date | 1,788,134,400 |
| Shares Short Prior Month | 4,298,665 |
| Short Name | Sionna Therapeutics, Inc. |
| Short Percent Of Float | 0.1363 |
| Short Ratio | 2.55 |
| Source Interval | 15 |
| State | MA |
| Symbol | SION |
| Target High Price | 63.0 |
| Target Low Price | 5.0 |
| Target Mean Price | 21.0 |
| Target Median Price | 6.0 |
| Total Cash | 211,031,008 |
| Total Cash Per Share | 4.668 |
| Total Debt | 8,069,000 |
| Tradeable | 0 |
| Trailing Annual Dividend Rate | 0.0 |
| Trailing Annual Dividend Yield | 0.0 |
| Trailing Eps | -2.16 |
| Trailing Peg Ratio | None |
| Triggerable | 1 |
| Two Hundred Day Average | 31.87025 |
| Two Hundred Day Average Change | -27.980251 |
| Two Hundred Day Average Change Percent | -0.8779426 |
| Type Disp | Equity |
| Volume | 1,483,533 |
| Website | https://www.sionnatx.com |
| Zip | 2,451 |