Should ADRs be close to parity with their stocks in their home trading company?

Question

assuming the $/British pound is 2

If a stock is trading in London at 2.5 should its ADR be trading at $5?

Thanks

Answer 1

Ted is correct.  You can find out the ratio of ADR to parent stock here.

http://www.adrbny.com/home.jsp

Answer 2

Maybe.  You need to know what the ADR is.  Many ADRs are not simply 1 share = 1 ADR.