TOKYO, Aug 1 (Reuters) - Moody's Investors Service said on Friday it had upgraded the long-term debt rating of Toyota Motor Corp , Japan's top auto maker, citing the company's strong operating performance.
Moody's raised Toyota's long-term credit rating to its top notch, Aaa, from Aa1.
Toyota shares were down 0.33 percent at 3,040 yen by 0334 GMT, compared to a 0.32 percent rise in the Nikkei average .