Japanese chipmaking equipment firm Kokusai Electric Corp. debuted on the Tokyo Stock Exchange Wednesday in Japan's largest initial public offering this year, ending nearly 28 percent above its IPO price.Shares of Kokusai Electric jumped to 2,436 yen at one point before ending the first trading day on the Tokyo market's top-tier Prime Market at 2,350 yen, or $16, compared with its IPO price of 1,840 yen.Based on the closing price, Kokusai Electric is valued at 541.4 billion yen. Upon its debut on the Tokyo Stock Exchange in the morning, it took about 30 minutes to get its initial price of 2,…READ FULL ARTICLE