Why is Vista Pharma. falling/rising?

As of 23-Sep, Vista Pharmaceuticals Ltd's stock price is currently at Rs 9.51, reflecting a decline of Rs 0.34 or 3.45%. The stock has underperformed significantly, with a 1-week return of -4.42% and a 1-month return of -7.67%. It is also trading lower than all key moving averages, indicating a bearish trend. The stock is close to its 52-week low, being only 4.31% away from Rs 9.1. Additionally, the company is facing operational challenges, including operating losses and a weak long-term fundamental strength, as evidenced by a negative EBIT to interest ratio of -3.92 and declining net sales and operating profit over the past five years.
In the broader market context, the Sensex has shown a slight decline of 0.34% over the past week, which contrasts with Vista Pharmaceuticals' sharper decline. The stock's performance has been notably poor over the last year, generating a return of -29.82%, while the benchmark has only decreased by 3.33%. This underperformance is compounded by the company's weak financial metrics and the fact that it has consistently underperformed the BSE500 over various time frames. Despite a rise in investor participation, the overall sentiment remains negative due to the company's financial instability and poor growth prospects.