After rising for two back-to-back sessions, the stock market turned weak as the benchmark Sensex fell nearly 146 points and the NSE Nifty hung below the 8,000-mark in early trade on Thursday, with participants liquidating positions in view of November month derivatives expiry.
Besides, weak Asian cues as upbeat economic data strengthened prospect of higher US interest rates and the continued free-fall of the rupee against the American currency weighed on sentiment, brokers said.