>TKPHY does represent half a share; however, TKPHF appears to represent one full share as it is trading at twice the price of TKPHY.<
In that case, you have the explanation you were looking for re the dual tickers: TKPHF is the old full-share ADR that is obsolete (and not traded, as jbog said), while TKPHY is the new half-share ADR issued by both JPMorgan and Citibank. (Takeda presumably wanted to have two ADR custodians for the new ADR issue in case one of them failed to perform.)
>what is your investment opinion of Takeda<
I haven’t studied the company closely enough to have a strong opinion; I’ll take a look when I get a chance. Regards, Dew
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