Australia's AI firm Appen gains on positive outlook

** Shares of Appen Ltd APX rise 10.2% to A$0.65, set for their best day since May 10, if gains hold

** The AI services provider sees positive signals on AI algorithm Large Language Model (LLM) related growth in 2024, including from its global customers

** Says co's target is to reach cash EBITDA positive on a run-rate basis in the early second half of FY24

** Stock down 6.4% YTD, as of last close