By Karunjit Singh (May 8, 2023, 5:22 PM EDT) -- The Federal Court of Appeal has upheld a Tax Court decision deeming the Canadian Imperial Bank of Commerce's (CIBC's) loss from the fluctuation in foreign currency value on a share disposition to be nil under the Income Tax Act. CIBC had in 2006 subscribed to shares of CIBC Delaware Holdings Inc. (DHI) for US$1 billion which was equivalent to $1.13 billion at the time....