** Shares of Calmer Co International CCO.AX rise as much as 42.9% to A$0.005, their biggest intraday pct rise since June 19

** Highest level since April 17; stock last up 14.3%

** The health services co reports a revenue of A$2.4 million ($1.58 million) for the first quarter of FY26, higher than the A$1.9 million in fourth quarter of FY25

** About 47.6 mln shares change hands, 27.4 times the 30-day avg

** Stock is down 26.8% YTD, including the session's moves

($1 = 1.5168 Australian dollars)

(Reporting by Anjali Singh in Bengaluru)

((anjali.singh2@thomsonreuters.com;))