The 30-share index ended the day at 20,345.20, lower by 120.10 points. The key-index touched the day's high of 20,519.70 and a low of 20,293.87 points.
Similarly, National Stock Exchange index Nifty eased by 0.85 points at 6,178.55, after touching the day's high of 6,184.25 and a low of 6,184.25 points.
A cross-section of sectors ranging from auto to metal suffered losses. Shares of banks, metal companies, capital goods, realty, IT and Tech bore the maximum brunt on Thursday.
Both mid-cap and small cap were also ended in red. Mid-cap lost 2.07 points at 10,056.87 while small cap 12.26 points at 13,896.71.
Bankex ended lower by 200.01 at 11,670.48 points.
Another major losing sector Metal was also down by 162.68 at 19,998.17 points
However, oil and gas, power and PSU posted gains.
Oil and gas index rose by 211.14 points to 13,602.26, power index by 147.81 points to 4,806.12 and PSU index by 237.01 points to 11,010.92.