Why is Tasty Dairy falling/rising?

As of 11-Sep, Tasty Dairy Specialities Ltd's stock price is currently at 8.70, reflecting an increase of 0.12 or 1.4%. The stock has shown a positive trend recently, gaining 4.82% over the past week and outperforming its sector by 1.52% today. It has been on a consecutive gain for the last two days, with a notable rise in delivery volume, indicating increased investor participation. However, despite these short-term gains, the company faces significant challenges, including a negative book value and a high Debt to EBITDA ratio of -1.00 times, which suggests weak long-term fundamental strength. The company's net sales and profit after tax have both declined by 47.10%, contributing to a concerning financial outlook.
In the broader market context, Tasty Dairy's recent performance contrasts with the benchmark, as it has outperformed the Sensex by a margin of 3.79% over the past week, while the Sensex itself has only increased by 1.03%. However, the stock has consistently underperformed against the benchmark over the longer term, with a year-to-date decline of 25.00% compared to the Sensex's gain of 4.36%. This persistent underperformance, combined with the company's weak profitability and negative EBITDA, raises concerns about its sustainability in the market despite the recent uptick in price.