Why is Safari Inds. falling/rising?

As of 18-Aug, Safari Industries (India) Ltd is experiencing a price increase, currently at 2,083.20, reflecting a rise of 33.2 or 1.62%. The stock has shown a positive trend recently, gaining for three consecutive days with a total return of 3.03% during this period. However, despite this short-term gain, the stock has underperformed its sector by 1.16% today and has a mixed performance over longer periods, with a 1-week return of +2.12% compared to the Sensex's +0.83%, but a significant year-to-date decline of -19.49% against the Sensex's +4.01%. The company's fundamentals remain strong, characterized by low debt and robust long-term growth, with net sales growing at an annual rate of 29.80% and a return on equity of 15.18%. Additionally, the company has recently reported positive quarterly results, which may have contributed to the stock's upward movement.
In the broader market context, while Safari Industries has shown a positive return over the past week, its year-to-date performance indicates a substantial lag behind the benchmark index. The plastic products sector has gained by 2.83%, suggesting a favorable environment for the industry, which may be influencing investor sentiment positively. The increase in institutional holdings to 37.72% indicates confidence from larger investors, who typically have more resources to analyze company fundamentals. This institutional interest, combined with rising investor participation reflected in the significant increase in delivery volume, suggests a potential shift in market perception towards the stock, despite its overall negative performance in the longer term.