Feb 17 (Reuters) - Altium Ltd ALU.AX :
* HY PROFIT ATTRIBUTABLE DOWN 1.5% TO US$23.1 MILLION
* DECLARED AN INTERIM DIVIDEND OF AU 20 CENTS PER SHARE
* MAINTAINS FY REVENUE MARGIN GUIDANCE OF BETWEEN US$205 MILLION TO US$215 MILLION
* HY REVENUES FROM ORDINARY ACTIVITIES US$93.4 MILLION UP 19.1%
* LIKELY TO LAND AT LOWER END OF FY GUIDANCE RANGE DUE TO UNCERTAINTY FROM CORONAVIRUS, AMONG OTHER THINGS