CDI explained, page-9

from my understanding we give away 14.25 BDR for 1 Americano CDI
so for every 10,000BDR we will receive 701.75 Americano CDI: these are not shares on the ASX BEWARE
therefore to trade the CDI you need a broker for overseas exchange
and to buy overseas shares I think there is minimum value transaction of AUD$2000
so your 701.75 Americano CDI would need to be worth at least AUD$3.00+ to cover the minimum amount transaction value and the brokerage fees, let alone make any money because the exchange rate would also take a chunk out of the transaction, good luck with one...

so there is no way in the world BDR/American CDI will reach that lofty value AUD$3,00+
BDR never has and never will, unless Gold goes ballistic to US$2500 may be...

in this scenario small holder like me are truly burned and out of the picture with this proposed merger
therefore would need to sell a huge loss to preserve a few 100 bucks before the merger goes ahead
sell now or wait for uplift ? will there be one on the 31st March??