** Shares of BlueScope Steel BSL.AX fall as much as 9% to A$20.460, hitting their lowest level since October 15
** Stock logs its biggest intraday pct loss since February 20, 2023
** Steelmaker says it expects to post half-year underlying earnings before interest and tax (EBIT) at bottom end of forecast
** In August, co had said it expected to post HY EBIT between A$550 million and A$620 million ($357.12 million-$402.57 million)
** Co says "macroeconomic conditions remain mixed"
** Stock up nearly 18% this year, including day's move
($1 = 1.5401 Australian dollars)
(Reporting by Rajasik Mukherjee in Bengaluru)
((Rajasik.Mukherjee@thomsonreuters.com))