Why is International Ge falling/rising?

As of 19-Sep, the stock price of International Gemmological Institute (India) Ltd is currently at Rs 371.15, reflecting a decrease of Rs 8.5 or 2.24%. The stock has been underperforming, having fallen consecutively for the last two days, resulting in a total decline of 3.53%. Additionally, the stock's performance today has underperformed its sector by 1.68%. In terms of returns, the stock has seen a modest increase of 10.26% over the past month, but it has significantly underperformed year-to-date with a decline of 32.94%. Despite these challenges, the company has demonstrated strong long-term fundamentals, with a high average Return on Equity (ROE) of 40.21% and a low Debt to Equity ratio, which may provide some support for the stock.
In the broader market context, the Sensex has increased by 0.88% over the past week and by 1.20% over the past month, indicating that the stock's recent decline is occurring against a backdrop of a generally rising market. The stock's year-to-date performance is notably worse than the Sensex, which has gained 5.74% in the same period. This disparity suggests that investor sentiment towards International Gemmological Institute (India) Ltd is weaker compared to the overall market, compounded by falling investor participation and lower trading volumes.