Spero Therapeutics Stock Forecast

Sell candidate since Jun 17, 2026 Loss -44.55%

The Spero Therapeutics Inc. stock price fell by -2.50% on the last day (Friday, 31st Jul 2026) from $1.20 to $1.17. During the last trading day the stock fluctuated 3.74% from a day low at $1.17 to a day high of $1.21. The price has fallen in 7 of the last 10 days and is down by -25.95% for this period. Volume has increased on the last day by 323 thousand 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, 809 thousand shares were bought and sold for approximately $946.98 thousand.

The stock lies in the lower of a very wide and falling trend in the short term, and this may normally pose a very good buying opportunity. If the lower trend floor at $1.00 is broken, it will firstly indicate a stronger fall rate. Given the current short-term trend, the stock is expected to fall -43.07% during the next 3 months and, with a 90% probability hold a price between $0.572 and $1.19 at the end of this 3-month period.

SPRO Signals & Forecast

A buy signal was issued from a pivot bottom point on Thursday, July 23, 2026, and so far it has risen 0.86%. Further rise is indicated until a new top pivot has been found. Some negative signals were issued as well, and these may have some influence on the near short-term development. The Spero 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 $1.18 and $1.92. A break-up above any of these levels will issue buy signals. Furthermore, there is currently a sell signal from the 3 month Moving Average Convergence Divergence (MACD). Spero Therapeutics Inc. gained volume on the last day, but on falling prices. In technical terms, this is called divergence and may be an early warning. In some cases, increasing volume on falling prices may be considered positive, but that is mainly in typical "sell-offs".

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

Spero Therapeutics Inc. finds support from accumulated volume at $1.16 and this level may hold a buying opportunity as an upwards reaction can be expected when the support is being tested.

This stock may move very much during the day (volatility) and with a very large prediction interval from the Bollinger Band this stock is considered to be "very high risk". During the last day, the stock moved $0.0438 between high and low, or 3.74%. For the last week, the stock has had daily average volatility of 5.75%.

Spero Therapeutics Inc. is oversold on RSI14 (6). Some stocks may fall long and hard while being oversold on RSI, but stocks that are heavily oversold on RSI often pose good re-bounce chance and played well it can be a buy candidate.

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

Trading Expectations (SPRO) For The Upcoming Trading Day Of Monday 3rd

For the upcoming trading day on Monday, 3rd we expect Spero Therapeutics Inc. to open at $1.18, and during the day (based on 14 day Average True Range), to move between $1.10 and $1.24, which gives a possible trading interval of +/-$0.136 (+/-12.36%) up or down from last closing price. If Spero Therapeutics Inc. takes out the full calculated possible swing range there will be an estimated 12.36% move between the lowest and the highest trading price during the day.

Since the stock is closer to the support from accumulated volume at $1.16 (0.85%) than the resistance at $1.19 (1.71%), our systems sees the trading risk/reward intra-day as attractive and believe profit can be made before the stock reaches first resistance..

Is Spero Therapeutics Inc. stock A Buy?

Spero Therapeutics Inc. holds several negative signals and is within a very wide and falling trend, so we believe it will still perform weakly in the next couple of days or weeks. We therefore hold a negative evaluation of this stock.

Current score: -3.323 Sell Candidate Unchanged

Predicted Fair Opening Price

Predicted fair opening price on August 3, 2026 - $1.18 ( 1.25%).

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