Japan Stocks: Advantest, OncoTherapy, Oriental Land, Tepco

March 29 (Bloomberg) -- Japan’s Nikkei 225 Stock Average fell 19.45, or 0.2 percent, to 9,459.08 as of the close in Tokyo. The following were among the most active shares in the Japanese market today. Stock symbols are in parentheses after company names.

Advantest Corp. (6857 JT), the world’s biggest maker of memory-chip testers, gained 3 percent to 1,396 yen. The company agreed to buy Verigy Ltd. (VRGY US) for $1.1 billion, or $15 a share, according to a statement.

Daito Trust Construction Co. (1878 JT), a builder, slipped 2.9 percent to 5,600 yen. The company was lowered to “neutral” from “outperform” by Masahiro Mochizuki, a Tokyo-based analyst at Credit Suisse Group AG.

Nippon Chemi-Con Corp. (6997 JT), a maker of electronic parts, soared 14 percent to 391 yen, the largest advance since June 2009. The company was boosted to “outperform” from “neutral” by George T. Chang, a Tokyo-based analyst at Macquarie Group Ltd.

Nomura Co. (9716 JT), a commercial-display contractor, tumbled 13 percent to 251 yen. The company said it’s unable to post a full-year earnings forecast because of the difficulty in assessing the impact from the March 11 earthquake. Full-year net income fell 1 percent to 403 million yen.

OncoTherapy Science Inc. (4564 JT), a pharmaceuticals researcher, surged 14 percent to 167,700 yen, after saying it has signed a contract with Ono Pharmaceutical Co. (4528 JO) to provide the drugmaker exclusive rights to develop, make and sell peptide vaccines used for a cancer treatment in Japan, South Korea and Taiwan. Ono rose 1.9 percent to 4,035 yen.

Oriental Land Co. (4661 JT), an operator of Tokyo Disney Resort, rallied 4.2 percent to 6,370 yen. Tokyo Disneyland and Disney Sea had no major damage from the March 11 earthquake. They are able to open, Oriental Land said on its Web site.

Renesas Electronics Corp. (6723 JT), an electronic-components maker, rose 3.2 percent to 681 yen. The company is considering outsourcing production of some components overseas after its plants suffered damage in the March 11 earthquake and tsunami.

Skymark Airlines Inc. (9204 JT), Japan’s biggest low-cost carrier, leapt 3 percent to 1,025 yen. The company said it found no radiation on its aircraft flying via Ibaraki Airport north of Tokyo.

Teikoku Piston Ring Co. (6463 JT), a piston ring maker, gained 2.7 percent to 757 yen, while Okaya Electric Industries Co. (6926 JT), an electronics maker, slid 0.4 percent to 477 yen. The companies said in a joint statement they will set up an equally-owned capacitor venture on April 1.

Tokyo Electric Power Co. (9501 JT), Asia’s largest utility, plunged 19 percent to 566 yen. The Fukushima Dai-Ichi nuclear reactors remain in “serious condition,” said U.S. Nuclear Regulatory Commission Chairman Gregory Jaczko, who was visiting Japan to assess the damage from the accident, Kyodo News reported. Dai-ichi Life Insurance Co. (8750 JT), Tepco’s second-biggest shareholder, sank 4 percent to 118,400 yen.

Zojirushi Corp. (7965 JO), a maker of electric kitchen appliances, leapt 5.3 percent to 220 yen. The company said first-quarter net income jumped 65 percent to 1.15 billion yen.

To contact the reporter on this story: Norie Kuboyama in Tokyo at nkuboyama@bloomberg.net.

To contact the editor responsible for this story: Nick Gentle at ngentle2@bloomberg.net.