** Australian technology sub-index gains as much as 1.1% to hit its highest level since Oct 1

** Sub-index tracks overnight gains on Wall Street

** ASX-listed shares of Block Inc gain as much as 3.1% while shares of Xero add as much as 1.2%

** As of 0021 GMT, sub-index up 49.5% YTD while the benchmark ASX200 is up 9.5%

(Reporting by Echha Jain in Bengaluru)

((Echha.jain@thomsonreuters.com))