The Nikkei stock index surged over 10 percent, as investors scooped up battered shares after the benchmark’s biggest point drop on record the previous day. At 10 a.m., the 225-issue Nikkei Stock Average had risen 3,267.27 points, or 10.39 percent, from Monday to 34,725.69. The broader Topix index was up 234.25 points, or 10.52 percent, at 2,461.40. Sentiment improved as the yen weakened as the U.S. dollar was bought back after the release of stronger-than-expected U.S. economic data, helping to lift export-oriented issues. Circuit breakers were briefly triggered for Nikkei and Topix futures in…