SDI 0.00% 93.0¢ sdi limited

For Market depth experts and technicians, or anybody...help

  1. 672 Posts.
    Saw this today pre-market...
    Can anyone help me figure out this Surplus volume?
    It is from CommSec...and raises a lot of questions in my mind...
    Is it a simple glitch (I hope not, very concerning for CommSec clients)? is it a 200k bid that hasn't yet appeared on the depth? is it even trying to appear (i.e. hidden order)? is it a centrepoint order? is it a bird?

    Thanks in advance!

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