However, Insurance Australia Group IAG.AX climbed 4.2% on beating first-half profit and dividend estimates. By Upasana Singh Feb 11 (Reuters) - Australian shares fell on Friday to their worst day in two weeks, dragged by tech stocks after red-hot U.S. inflation data fuelled bets on more aggressive interest rate hikes by the Federal Reserve and sent Wall Street sharply lower. U.S. stocks closed sharply lower overnight after consumer prices data came in stronger than expected and comments from a Fed official raised fears that the central bank would hike rates aggressively to tame inflation.