Sionna Therapeutics Stock Forecast

Sell candidate since Aug 10, 2026

The Sionna Therapeutics, Inc. stock price fell by -91.18% on the last day (Monday, 10th Aug 2026) from $51.04 to $4.50. During the last trading day the stock fluctuated 24.68% from a day low at $4.01 to a day high of $5.00. The price has risen in 7 of the last 10 days but is still down by -90.08% for this period. Volume has increased on the last day by 37 million shares but on falling prices. This may be an early warning and the risk will be increased slightly over the next couple of days. In total, 38 million shares were bought and sold for approximately $171.59 million.

The stock has broken the very wide and strong rising short-term trend down. This signalizes a slower rate of rising, but may also be an early warning about a possible trend shift. Due to the trend being broken there will now be resistance at the bottom line of the trend at $37.55. A reaction back to this level may hold a second chance to get out before further falls.

SION Signals & Forecast

There are few to no technical positive signals at the moment. The Sionna Therapeutics, Inc. stock holds sell signals from both short and long-term Moving Averages giving a more negative forecast for the stock. Also, there is a general sell signal from the relation between the two signals where the long-term average is above the short-term average. On corrections up, there will be some resistance from the lines at $42.69 and $43.86. A break-up above any of these levels will issue buy signals. A sell signal was issued from a pivot top point on Friday, August 07, 2026, and so far it has fallen -91.18%. Further fall is indicated until a new bottom pivot has been found. Furthermore, there is currently a sell signal from the 3 month Moving Average Convergence Divergence (MACD). Volume rose on falling prices yesterday. This may be an early warning and the stock should be followed more closely.

Support, Risk & Stop-loss for Sionna Therapeutics, Inc. stock

There is no support from accumulated volume below today's level and given the right condition the stock may perform very badly in the next couple of days.

This stock has average movements during the day and with good trading volume, the risk is considered to be medium. During the last day, the stock moved $0.99 between high and low, or 24.68%. For the last week, the stock has had daily average volatility of 12.27%.

Sionna Therapeutics, Inc. is oversold on RSI14 (18). Some stocks may drop long and hard while being oversold on RSI before turning, which increases the general risk.

Our recommended stop-loss: We hold a negative evaluation for this stock. No stop-loss is set.

Trading Expectations (SION) For The Upcoming Trading Day Of Tuesday 11th

For the upcoming trading day on Tuesday, 11th we expect Sionna Therapeutics, Inc. to open at $4.50, and during the day (based on 14 day Average True Range), to move between $1.19 and $7.81, which gives a possible trading interval of +/-$6.61 (+/-554.33%) up or down from last closing price. If Sionna Therapeutics, Inc. takes out the full calculated possible swing range there will be an estimated 554.33% move between the lowest and the highest trading price during the day.

Is Sionna Therapeutics, Inc. stock A Buy?

The Sionna Therapeutics, Inc. stock holds several negative signals and despite the positive trend, we believe Sionna Therapeutics, Inc. will perform weakly in the next couple of days or weeks. Therefore, we hold a negative evaluation of this stock. Due to some small weaknesses in the technical picture we have downgraded our analysis conclusion for this stock since the last evaluation from a Buy to a Strong Sell candidate.

Current score: -5.406 Strong Sell Candidate Downgraded

Predicted Fair Opening Price

Predicted fair opening price on August 11, 2026 - $4.50 ( 0.0726%).

Want to trade but not sure how? Our step-by-step guide can help.
Skip the guide? Open account with our trusted broker*
*Your capital is at risk