Why is Crestchem falling/rising?

As of 18-Nov, Crestchem Ltd's stock price is currently at Rs 116.50, reflecting an increase of Rs 4.05 or 3.6%. The stock has shown a trend reversal today, gaining after three consecutive days of decline. It reached an intraday high of Rs 129.5, which is a significant increase of 15.16%. Despite this positive movement today, the stock has underperformed in the longer term, with a year-to-date decline of 58.40% compared to the Sensex's gain of 8.36%. Additionally, the stock has been highly volatile today, with an intraday volatility of 7.04%, and while it is trading lower than all major moving averages, there has been a notable increase in investor participation, with delivery volume rising by 174.16% against the five-day average.
Broader Market Context: In the short term, Crestchem's performance has been less favorable compared to the benchmark, as it has declined by 5.01% over the past week while the Sensex has gained 0.96%. This indicates that while there is a temporary rebound in Crestchem's stock price today, the overall trend remains concerning when viewed against the broader market. The stock's significant year-to-date and one-year declines highlight ongoing challenges, despite today's positive movement and increased trading activity, suggesting that investor sentiment may still be cautious in the face of its longer-term performance.