Why is International Ge falling/rising?

As of 18-Sep, International Gemmological Institute (India) Ltd's stock is currently priced at Rs 379.65, reflecting a decline of Rs 5.75 or 1.49%. Today, the stock has underperformed its sector by 1.63%, reaching an intraday low of Rs 375.2, which is a decrease of 2.65%. The stock has shown a positive trend over the past week and month, with returns of 4.06% and 11.74%, respectively, but it has a significant year-to-date decline of 31.40%. Despite strong long-term fundamentals, including a high average Return on Equity (ROE) of 40.21% and a low Debt to Equity ratio, the stock's recent performance is affected by falling investor participation, as evidenced by a 6.16% drop in delivery volume compared to the five-day average.
In the broader market context, the stock's short-term performance has outpaced the benchmark Sensex over the past week and month, which returned 1.80% and 2.14%, respectively. However, the year-to-date performance starkly contrasts with the Sensex's gain of 6.24%, indicating that while the stock has shown some recovery recently, it remains under pressure compared to the overall market. The liquidity of the stock is adequate for trading, but the recent decline in investor participation suggests a cautious sentiment among investors, contributing to the stock's current downward movement.