I want to know how one unit of ADR is constructed from the home stock.
For example, I see a ADR for India's Tata motors . ADR is trading at about $12 and in home market it is about INR 177, but given the conversion of INR 71 to USD 1, one Indian stock should be selling for about $2.50, but it is for $12, so there has to be more than one Indian stock in one unit of ADR.
Where can I find that conversion and is that conversion a standard ?
