A common tailwind for all companies in the sector is the depreciation of rupee vis-a-vis the greenback. The rupee, which has remained stable in CY17, has depreciated sharply in the current year more so in the last couple of weeks. The recent 3 per cent depreciation of the rupee is expected to lead to a 5 per cent revision in earnings per share estimates of most companies. While companies across the sector will benefit, analysts believe among the mid-caps the key gainers will be MindTree, which is the most sensitive to currency movement given the higher share of offshoring, as well as NIIT and Persistent Systems, given their low base as well as higher offshoring.