May 21 (Bloomberg) -- Japan’s Nikkei 225 Stock Average fell 80.49, or 0.9 percent, to 9,264.15 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.

Electronic component makers: The sector was cut to “neutral” from “bullish” at Nikko Citigroup Ltd. Ibiden Co. (4062 JT), whose rating was lowered to “sell” from “hold” by Nikko analyst Hisanori Shimoi, fell 2.7 percent to 2,740 yen. NGK Spark Plug Co. (5334 JT) lost 2.6 percent to 818 yen, after the maker of ceramic products for semiconductors had its rating reduced to “sell” from “hold” by Shimoi. TDK Corp. (6762 JT) slid 2.1 percent to 4,260 yen. Hirose Electric Co. (6806 JT) fell 3.7 percent to 10,200 yen. Rohm Co. (6963 JO) lost 2.1 percent to 6,110 yen.

Bookoff Corp. (3313 JT) added 2.2 percent to 836 yen. The used-book retailer’s full-year net income was forecast to increase 17 percent to 1.2 billion yen on a 16 percent gain in sales.

CSK Holdings Corp. (9737 JT) extended yesterday’s 4 percent drop, falling 4.6 percent to 457 yen. The computer-services company was lowered to “sell” from “hold” Satoru Kikuchi, an analyst at Deutsche Bank AG. Kikuchi slashed a 12-month price estimate on the shares to 200 yen from 450 yen.

Chiyoda Corp. (6366 JT) gained 5.3 percent to 721 yen, the highest since Oct. 1. Fidelity Investments Japan Ltd. held 5.12 percent shares of the plant-engineering company, according to a filing with Japan’s finance ministry.

Dentsu Inc. (4324 JT) dropped 3.7 percent to 1,779 yen. Japan’s largest advertising company had its 12-month price estimate cut to 2,100 yen from 2,300 yen by Eiji Maeda, an analyst at JPMorgan Chase & Co.

Descente Ltd. (8114 JT) fell 2.6 percent to 414 yen. A new world record set at an international swimming competition in Australia may not be accredited as Descente’s swimsuit, worn by the victor, conflicted with rules set by the Federation Internationale de Natation Amateur. “There is a concern the company’s brand image will get hurt,” said Yasushi Noguchi, head of SMBC Friend Securities Co.

F@N Communications Inc. (2461 JQ) advanced 2.9 percent to 126,200 yen. The Internet marketing services provider plans to buy back as much as 2.5 percent of its outstanding shares for up to 310 million yen on May 21.

Fuji Fire and Marine Insurance Co. (8763 JT) soared 11 percent to 136 yen. The casualty insurer said it expects to earn 5.5 billion yen in net income in the year started April 1, recovering from a net loss of 59.6 billion yen the previous fiscal year.

Hamamatsu Photonics K.K. (6965 JT) dropped 3.7 percent to 1,941 yen. The maker of electron tubes and semiconductors was reduced to “neutral” from “buy” by Motoya Koutani, an analyst at Nomura Holdings Inc.

Kubota Corp. (6326 JT) rose 2.9 percent to 678 yen, the highest since Sept. 25. Asia’s largest tractor maker’s 12-month price estimate was raised to 800 yen from 600 yen by Shigeki Okazaki, an analyst at Nomura Holdings Inc.

Kuraray Co. (3405 JT) gained 3.6 percent to 969 yen. The fiber maker was raised to “strong buy” from “buy” by Wakako Sato, an analyst at Mizuho Securities Co.

McDonald’s Holding Co. (Japan) Ltd. (2702 JQ) slid 2.7 percent to 1,885 yen. The unit of the world’s biggest restaurant company has two workers who tested positive for A/H1N1 virus, known as swine flu, Nikkei Telecom 21 reported today.

Mitsubishi Materials Corp. (5711 JT) rose 2.8 percent to 297 yen. The non-ferrous metal producer will start running three copper smelters in Japan at capacity starting in August, as domestic demand for automobiles is likely to recover, the Nikkei newspaper reported without citing anyone. The company has reduced output by 10 percent from February, according to the report.

Nippon Koei Co. (1954 JT) jumped 9.9 percent to 255 yen, the highest since Sept. 24. The provider of construction consulting and engineering services forecast its net income will jump to 1.4 billion yen from 300 million yen this fiscal year, as it expects government stimulus measures will boost demand.

Nissin Foods Holdings Co. (2897 JT) rallied 6.6 percent to 2,830 yen, the biggest gain since Oct. 29. The maker of instant noodles today bought back 3.12 million shares for 8.28 billion yen. Nissin Foods yesterday said it plans to repurchase as much as 4.5 million shares, or 3.68 percent of its outstanding shares, at 2,655 yen per share.

Nissin Healthcare Food Service Co. (4315 JQ) advanced 3.7 percent to 1,035 yen. The catering company said it expects full- year net income to jump 66 percent to 6.5 billion yen.

Park24 Co. (4666 JT) slipped 2.9 percent to 832 yen. The parking-lot operator’s first-half operating profit fell 17 percent to 4 billion yen, the Nikkei newspaper reported without saying how it obtained the information.

Sagami Rubber Industries Co. (5194 JT) rose 3.1 percent to 233 yen. The maker of plastic products forecast it will return to a profit of 282 million yen this fiscal year. It booked a net loss of 156 million yen in the year ended March 31.

Shikibo Ltd. (3109 JT), a maker of materials used in medical masks, gained 4.4 percent to 190 yen, after the government confirmed the first two cases of swine flu in the Tokyo area. Two 16-year-old girls, both from the same high school in Kawasaki, south of Tokyo, were found to have swine flu after returning from a week-long trip to New York on May 19, the Tokyo and Kawasaki city governments said in statements. Daiwabo Co. (3107 JT) also climbed as much as 9.9 percent earlier today, and closed at 344 yen, up 0.3 percent.

Shikoku Electric Power Co. (9507 JT) added 2.3 percent to 2,710 yen. The utility said it plans to repurchase as much as 3.1 percent of its outstanding shares for up to 20 billion yen.

Sompo Japan Insurance Inc. (8755 JT) rallied 3.2 percent to 717 yen. The casualty insurer said it will have 32 billion yen in net income this fiscal year, recovering from 66.7 billion yen in net loss in the year ended March 31. Sompo said it will sell 128 billion yen in subordinated bonds on May 27 to strengthen its capital base. The securities have a maturity of 60 years and may be called in five years.

Taiyo Nippon Sanso Corp. (4091 JT) dropped 2.6 percent to 792 yen. The industrial-gas producer was cut to “neutral” from “outperform” by Credit Suisse Group analyst Masami Sawato.

Take And Give Needs Co. (4331 JT) soared by its upper daily limit of 17 percent to 7,060 yen. The wedding arrangement services company forecast its net income for the year ending in March 2010 will be 695 million yen, compared with a deficit of 1.05 billion yen in the year just ended. Sales were projected to increase 3.7 percent to 47.9 billion yen.

Takihyo Co. (9982 JT) surged 14 percent to 467 yen, rising the most since January 2006. The apparel trader said it will spend as much as 1 billion yen to buy back up to 3.88 percent of its outstanding shares through July 31.

Toa Road Corp. (1882 JT) jumped 14 percent to 212 yen, the highest since July 30. The road paver said it expects to have 1.5 billion yen in full-year net income, jumping from 417 million yen in the year ended March 31.

Tohokushinsha Film Corp. (2329 JQ) fell 3.5 percent to 627 yen. The producer of television programs and films said in a preliminary earnings statement net income was 1.48 billion yen in the year ended March 31, down from 2.59 billion yen a year ago, and it forecast the same level of profit this year. The company cited a bigger-than-expected drop in sales of TV advertisements and broadcast rights for foreign movies, as well as charges on devalued stockholdings, for the result.

Tokio Marine Holdings Inc. (8766 JT) lost 2.8 percent to 2,745 yen. The insurance company’s net income in the just-ended fiscal year fell 79 percent to 23.1 billion yen because of lower revenue from insurance and charges related to the devaluation of securities holdings.

Tokyo Steel Manufacturing Co. (5423 JT) fell 2.5 percent to 1,062 yen. Japan’s biggest electric-arc furnace mill may see depreciation costs rise 55 percent to about 15 billion yen for the year that ends March 2010, Nikkei English News reported, without saying how it got the information.

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

Last Updated: May 21, 2009 03:15 EDT