** Shares of Australia's VBX VBX.AX rise as much as 6.2% to A$0.52, their highest level since December 18
** Stock hits its biggest intraday pct gain since mid-December
** Bauxite producer says it has found more bauxite reserves near its Wuudagu bauxite project in northwestern Queensland
** VBX stock up 3.5% YTD, including session's moves
** VBX debuted in June 2025
(Reporting by Aamir Sheik Khalid in Bengaluru)
((Aamir.SheikKhalid@thomsonreuters.com))