TOKYO, Oct 17 (Reuters) - Rigaku Holdings

raised 129 billion yen ($863 million) after the Japan X-ray

testing tool maker priced its IPO at the top of its range,

according to a regulatory filing on Thursday.

The company, which is backed by buyout firm Carlyle

Group ( CG ), priced the IPO at 1,260 yen per share, at the top

end of the 1,230 to 1,260 yen range.

Rigaku will debut on the Tokyo Stock Exchange on Oct.

25.

On Tuesday Tokyo Metro raised 348.6 billion yen after

pricing its IPO, the largest in Japan for six years, at the top

of the range.

The IPO was more than 15 times oversubscribed, Reuters

reported, with investors attracted by the subway operator's

dividend yield.

Bain Capital

scrapped a plan

for an IPO of chipmaker Kioxia this month after investors

pushed for a lower valuation than the buyout firm was targeting,

Reuters has reported.

($1 = 149.5000 yen)