Hitachi Ltd.'s group net profit for the October-December period fell more than three-quarters on lower earnings from securities, the Tokyo-based industrial electronics giant said Monday.

The company posted a 1.26 billion yen profit for the third quarter of the fiscal year ending in March, down 77 percent from the 5.4 billion yen a year before.

Group sales increased 10.2 percent to 2.488 trillion yen in the October-December quarter from 2.259 trillion yen the year before.