Why is Span Divergent falling/rising?

As of 17-Jul, Span Divergent Ltd's stock price is currently at Rs 22.51, reflecting an increase of Rs 1.07 or 4.99%. Today's performance indicates that the stock has outperformed its sector by 3.91% and opened with a gain of 4.99%. However, the stock has shown erratic trading patterns, not trading on one day out of the last 20 days, and has experienced a significant drop in delivery volume by 64.41% against the 5-day average. Despite this short-term rise, the company faces substantial challenges, including a negative book value, weak long-term growth, and high debt levels, which contribute to its classification as a strong sell. The stock has generated a return of -34.37% over the past year, indicating a poor performance relative to its historical valuations.
In the broader market context, Span Divergent Ltd's short-term return of -0.22% over the past week contrasts with the Sensex, which has declined by 1.12%. This suggests that while the stock has recently gained, it has still underperformed the benchmark over a longer period, with a year-to-date return of -35.37% compared to the Sensex's positive return of 5.27%. The stock's long-term underperformance, alongside negative financial results and a risky trading profile, indicates that the recent price increase may not be sustainable in the face of ongoing fundamental weaknesses.