Japan stocks continued to rise Wednesday because of weaker yen and U.S. market recovery the previous day, but fears of a weak American earnings week restrained aggressive investing.

The 225-issue Nikkei Stock Average gained 155.55 points, or 1.20 percent, from the previous day to 13,146.13. The broader Topix index of all First Section issues on the Tokyo Stock Exchange was up 15.91 points, or 1.27 percent, to 1,271.88.

Among all the TSE first section issues, 1,145 increased and 460 decreased. The trading volume reached 1,793.75 million stocks or 2,010.9 billion yen. The Japanese currency is being traded in the level of 101 yen per a U.S. dollar.

Real estate and banking issues increased while air transport issues declined on fears of the airline industry. After reports of the Delta Airlines and Northwest Airlines merger, analysts worried a new round of consolidation would occur and rates would increase.

There are too many economic indicators being released this week to see a clear trend now, traders said, according to Kabushiki Shimbun.

The TSE's Second Section index increased 22.63 points, or 0.83 percent, to 2,752.13 and the volume reached 72.54 million shares. On the Osaka Securities Exchange, the near-term June Nikkei 225 index futures contract was increased 210 points to 13,200.