Japanese stocks fell Thursday after weak demand at a Spanish bond auction renewed concerns about the eurozone sovereign debt crisis, according to dpa. The benchmark Nikkei 225 Stock Average lost 52.38 points, or 0.53 per cent, to trade at 9,767.61 at the end of trading. The broader Topix index was down 2.79 points, or 0.33 per cent, at 832.57. The Nikkei hit its worst three-day losing streak in five months after it dropped 2.3 per cent Wednesday. On currency markets at 3 pm (0600 GMT) in Tokyo, the dollar traded at 82.20-23 yen, down from Wednesday's 5 pm quote of 82.70-71 yen. The euro was quoted at 108.11-14 yen, down from 109.08-12 yen late Wednesday, and at 1.3151-52 dollars, down from 1.3190-91 dollars.