thanks Boppy...missed teh convertibles.....your right irrespective as to what portion of CBTE BOS owns, it still has 2.6mil...my previous fandangled calculation could be sinplified as follows :)
2600000 @ 0.79 = $2,054,000
2600000 @ 0.89 = $2,314,000
Difference = US$260,000 US
Or 260,000 /80*100 = AU325,000
lol same outcome