TCS Q3 Results: Emkay Global expects TCS shares to trend sideways to negative, with support at Rs 4,000 and Rs 3,900 and resistance at Rs 4,170-4,280. A buying opportunity is seen in the support band. A short build-up was noted, with open interest at $580 million, below its 1Y mean. Max OI is at Rs 4,200/3,800 strikes, with call and put additions observed.