Why is Nuvoco Vistas falling/rising?

As of 06-Nov, Nuvoco Vistas Corporation Ltd is experiencing a decline in its stock price, currently at 381.30, which reflects a decrease of 18.0 points or 4.51%. The stock has been underperforming, having fallen consecutively for the last four days, resulting in a total return of -9.72% over the past week. Today's trading saw the stock touch an intraday low of Rs 379.25, indicating significant selling pressure. Additionally, while the stock has shown a positive return of 6.75% over the past year, it has a weak long-term fundamental strength, evidenced by a -2.87% CAGR growth in operating profits over the last five years and a poor EBIT to interest ratio of 1.13, which raises concerns about its ability to service debt.
In the broader market context, Nuvoco's recent performance contrasts sharply with the benchmark Sensex, which has only declined by 1.30% over the past week. This underperformance is further highlighted by the stock's negative return of -9.37% over the past month, while the Sensex has gained 1.86% in the same period. Despite high institutional holdings at 23.29%, which typically indicate confidence in the stock, the company's flat results in September and high debt-equity ratio of 3.08 times contribute to a cautious outlook among investors. The stock's valuation appears attractive compared to peers, but the weak fundamentals and declining operating cash flow may be driving the current sell-off.