Why is Vodafone Idea falling/rising?

As of 25-Aug, Vodafone Idea Ltd. has experienced a price increase, currently trading at 7.40, reflecting a change of 0.33 or 4.67% upward. The stock has shown strong performance recently, with a consecutive gain over the last two days and a total return of 12.8% in this period. It has outperformed its sector by 4.54% today. Additionally, the stock has seen a significant increase in delivery volume, rising by 132.91% against the 5-day average, indicating rising investor participation. However, despite these positive short-term movements, the company has a negative book value and a high Debt to EBITDA ratio of 9.60 times, which raises concerns about its long-term fundamental strength and ability to service debt.
In the broader market context, Vodafone Idea's short-term return of 14.55% over the past week significantly outpaces the Sensex's return of 0.45% in the same period. However, the stock has underperformed over the longer term, with a year-to-date return of -6.80% compared to the Sensex's gain of 4.48%. This stark contrast highlights the stock's volatility and the risks associated with its negative operating profits and low return on equity of 3.89%. While institutional holdings at 59.13% suggest some level of confidence from more knowledgeable investors, the overall weak fundamentals and historical performance indicate that the stock remains a risky investment.