Serang ComSec has a minimun amount (based on $$$) I couldn't buy 1 stock if I tried. I would suspect the other platforms are the same.
NVX Despite lots of niobium hype, no one's sure what one does with it. This NASDAQ-ASX stock is betting on ... battery tech
CDE Codeifai's QR code product integrated by pre-US-IPO darling Canva – but also announces $0.6M placement