Denn die Zahlen von Rakuten sind zwar durchwachsen, aber auch nicht so schlecht, wie es der Kursverlauf widerspiegelt:
As a result, the Rakuten Group achieved revenue of ¥559,357 million, up 8.7% year-on-year, for the nine months ended September 30, 2016. However, mainly affected by increased expenses due to aggressive sales activities and the deteriorating stock market, Non-GAAP operating income fell by 9.0% year-on-year to ¥88,613 million.
global.rakuten.com/corp/investors/documents/results/
(Earnings Release for Q3 of FY2016 Financial Results)