Why My purchesed stock doesnt appear(as traded) on ASX ?

Hi

I have bought different stocks in the last couple of weeks and some of them do not appear on ASX or Commsec as traded (i.e 1.5 million shares was listed and I bought 1 million of them ,but after a day there is still 1.5 million share listed and no trade is recorded for that day!)
In some occasion I have checked The ASX website for that stock ,but it doesn't show any trade for that day.
I have contacted Commsec and they say it doesn't update on their website(even after 3 days)!
what does that mean?

Cheers,