Tradermum, just so you know, stocks open in a staggered fashion:
Group 1 10:00:00 am +/- 15 secs A-B, e.g. ANZ, BHP
Group 2 10:02:15 am +/- 15 secs C-F, e.g. CPU, DVT, ECP, FXJ
Group 3 10:04:30 am +/- 15 secs G-M, e.g. GHP, KYC, LIB
Group 4 10:06:45 am +/- 15 secs N-R, e.g. QAN
Group 5 10:09:00 am +/- 15 secs S-Z, e.g. TLS