Jan 12 (Reuters) - Altium Ltd ALU.AX :
* ALTIUM LTD- EXPERIENCED A DECLINE IN FIRST HALF REVENUE FOR FISCAL 2021 OF 3% TO US$89.6 MILLION
* ALTIUM LTD- REMAINS CONFIDENT THAT IT WILL DELIVER A STRONGER SECOND HALF
* ALTIUM LTD- MAINTAINS FULL YEAR GUIDANCE (EX-TASKING)