** Shares of Siren Gold SNG.AX rise as much as 13.4% to A$0.076, biggest intraday pct gain since September 1
** Co reports high-grade gold and antimony results at Langdons project in New Zealand
** About 2.5 mln shares traded, 1.7x the 30-day average
** YTD, stock up 16.9%
(Reporting by Ananya Verma in Bengaluru)
((ananya.verma@thomsonreuters.com;))