Why is C P C L falling/rising?

As of 15-Oct, Chennai Petroleum Corporation Ltd's stock price is currently at 758.20, reflecting a decline of 8.35 points or 1.09%. The stock has been underperforming, having fallen consecutively for the last three days, resulting in a total drop of 5.64% during this period. Additionally, the stock's performance over the past week shows a decrease of 5.60%, while its one-year return is down by 15.05%. Despite these recent declines, the company has demonstrated high management efficiency with a return on capital employed (ROCE) of 23.43% and healthy long-term growth, as evidenced by a net sales growth rate of 13.82% annually. However, the stock's delivery volume has decreased by 6.39% compared to the five-day average, indicating falling investor participation.
In the broader market context, the Sensex has increased by 1.02% over the past week, contrasting sharply with the stock's decline. This suggests that while the overall market is experiencing positive momentum, Chennai Petroleum Corporation Ltd is lagging behind. The stock's performance over the last month shows a slight increase of 0.93%, which is marginally better than the Sensex's 1.00% gain. However, the significant underperformance in the short term, coupled with declining investor interest, indicates that the stock is struggling to maintain its previous growth momentum despite its strong fundamentals.