** Shares of ALS Ltd ALQ.AX tumble as much as 12.4% to
A$13.090, set for worst day since March 16, 2020 - if current
losses hold
** Stock down ~9.8% as of 0020 GMT
** Testing services provider says it expects its underlying
net profit after tax for the September half to be down by 5% as
compared to PCP
** Says decline in NPAT is due to volume headwinds in its
commodities business, especially in the Australian and Latin
American markets
** Including day's moves, stock has risen ~5.5% this year
(Reporting by Archishma Iyer)
((Archishma.Iyer@thomsonreuters.com;))