RE:RE:RE:RE:The ad to ad.un tax treatment ? I know somebody who uses RBC and their statement shows $11.95 as new cost base, I use CIBC and my statement shows $12.27 as new cost base. Seems to be a lot of confusion about the right number. I have emailed Alaris to see if they have a correct number. Will post that if they respond. The old AD stock closed at $11.93 the day prior to the change, according to my records. Doesn't make a huge difference for your tax return, but might as well use the right number, if Alaris feels one is correct.