** Shares of Bryah Resources BYH.AX rise as much as 22.2% to A$0.006, hit their highest level since August 27
** Stock marks its biggest intra-day pct gain since September 26
** Battery metals explorer finds highest-grade antimony rock chip assay at its Golden Pike gold and antimony project in Canada
** About 25.4 mln shares traded, 8.2x the 30-day average
** YTD stock up 37.5%, including current session's move
(Reporting by Ananya Verma in Bengaluru)
((ananya.verma@thomsonreuters.com;))