Core Insights - Arcturus Therapeutics' stock plummeted over 55% following mixed results from a monthlong study of its experimental cystic fibrosis treatment using mRNA technology [1][3] - The study indicated no significant improvement in forced expiratory volume (FEV), a critical measure for cystic fibrosis patients, although some patients showed reduced mucous burden [2][3] - Analysts have differing opinions on the results, with one suggesting potential clinical benefits at high doses, while another described the data as underwhelming [3] Company Performance - Arcturus Therapeutics' stock fell to $10.27 after previously rising 188% from a low of $8.04 in April [3] - The company had a strong IBD Digital Relative Strength Rating of 92, placing it in the top 8% of all stocks based on 12-month performance [3] Analyst Commentary - William Blair analyst Myles Minter noted potential for clinical benefit at high doses [3] - Leerink Partners analyst Lili Nsongo characterized the data as underwhelming, reflecting a cautious outlook on the treatment's efficacy [3]