Yesterday, the investment services company Fisco issued a report about Nintendo's stock prices, which have continually dropped for five consecutive days.

One of the largest factors in the decline are the current underwhelming sales of the Nintendo 3DS. While it had a strong debut in Japan, sales tapered off, and the system was outsold by the PlayStation Portable last week by over 15,000 units.

The March 11 earthquake has lead to delays in software releases, with some notable titles, such as Nintendo's Steel Diver, lacking Japanese release dates even though they have been announced in Western territories. This, and overall reduction in consumer spending on entertainment are the main causes of the falls in stock prices.

Up to the end of March, Nintendo has sold 836,000 units of the new handheld in Japan. This is well below the 1.5 million that were expected to be shipped to stores.