New Delhi, Jan. 9 -- The Indian stock market suffered significant losses on Thursday, January 8, with the benchmark Sensex suffering its biggest single-day fall in over four months and the Nifty 50 falling below 25,900. The indices extended their losing streak for the fourth consecutive session. The Sensex has plunged 1,581 points, or 1.84%, while the Nifty 50 has declined 1.72% in the last four sessions.

Concerns over the Russia sanctions bill, geopolitical uncertainties, caution ahead of the Q3 results and relentless foreign capital outflow are the main triggers behind the downtrend in the Indian stock market.

"Market sentiment deteriorated amid heightened geopolitical tensions and global trade-related concerns, which weighed on overa...