There are currently no short positions in BUL as of the 20th Feb, and doesn't appear to have been all month. You can view this here:
http://www.asic.gov.au/short-position-reports
or here:
http://www.asx.net.au/data/shortsell.txt
Merril Lynch BOA are simply custodians for Matthews Capital so their BUL shares are held in that name.