Yahoo Japan Corp. said Thursday its group net profit for the April-June quarter soared 108.6 percent from a year earlier to 4.54 billion yen due to robust revenues bolstered by rising advertising income.

In its consolidated quarterly earnings report, the operator of Japan's leading Internet portal also said its pretax profit surged 101 percent to 8.26 billion yen, with revenues up 83.6 percent to 15.56 billion yen. Net profit per share was 4,818.55 yen.

Advertising income rose 50.9 percent to a record-high 4.4 billion yen for the sixth consecutive quarterly rise.

Revenues from the Internet auction business also remained strong, rising 15.8 percent from the January-March quarter to 4.3 billion yen, while the value of transactions made on the Yahoo shopping site topped 10 billion yen for the first time on a quarterly basis.

The number of subscribers to the Yahoo BB ADSL Internet access service stood at 2.82 million as of the end of June, up 19.4 percent from the end of March.

Yahoo Japan, listed on the Jasdaq over-the-counter stock market, also said it has filed an application for listing on the first section of the Tokyo Stock Exchange.