** Shares of Cardiex CDX.AX rise 3.3% to A$0.0775
** The health tech firm says customers of its CONNEQT Health unit can now access key arterial health biomarkers directly through the Apple Health app on iPhone
** Stock rose as much as 9.3% earlier in the day, marking its biggest intraday gain since March 5
** CDX stock down 22.7%, YTD
(Reporting by Adwitiya Srivastava in Bengaluru)
((Adwitiya.Srivastava@thomsonreuters.com))