** Shares of lithium miner PLS Group PLS.AX rise as much as 6.2% to A$6.03, marking their biggest intraday pct gain since April 17
** Co reports 86% increase in third-quarter spodumene concentrate production
** Co produced 232,436 dry metric tons of spodumene concentrate in Q3 vs 124,978 dmt produced last year
** Plans to ramp up Ngungaju plant in Western Australia to steady-state production by September quarter
** PLS says major maintenance overhauls at its Ngungaju plant scheduled for June 2026
** PLS reaffirms 2026 outlook for all metrics
** Stock up 34.6% YTD, including sessions' gains
(Reporting by Sruthi Narasimha Chari in Bengaluru)
((Sruthinarasimha.chari@thomsonreuters.com))