How come Yanks can buy/sell stocks in "pre-open"
Eg. From marketWatch
How come they can do this?Dow member Altria Group Inc. said first-quarter net income fell to $2.75 billion, or $1.30 a share, from $3.48 billion, or $1.65 a share. On an adjusted continuing operations basis it earned $1.03 a share. Analysts had been expecting earnings of $1.05 a share. The company also raised its profit forecast from continuing operations for the year to a range of $4.20 to $4.25 a share, from its prior view of $4.15 to $4.20 a share.
The stock slipped 1.1% to $69.33 ahead of the open.
Also in the Dow, General Motors said global first-quarter sales rose 3% to 2.3 million cars and truck from 2.2 million vehicles a year earlier. The Detroit automaker said its global market share fell to 13% from 13.1%.
The stock gave up 0.6% to $31.51 in the pre-open.
Can we do this on ASX?
And when can you actually start trading in the States?
Obviously before 9.30??