Investment services company Fisco issued a report today about Nintendo's stock price, which was seen drops for four straight days.

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As detailed in the report, investment bank Barclays Capital points to a slowdown in entertainment-based spending following the March 11 earthquake as a cause for the falls. Also a major factor is a slump in 3DS sales due to the the delay of many titles following the system's launch.

Of course, those delays were in most cases related to the earthquake, even though most publishers listed "various circumstances" as the official reason. Major titles like Dead or Alive Dimensions and Steel Diver have yet to be given new release dates even though they're available overseas.

The 3DS sold below the PSP this past week, the first time the new hardware has not placed first since its February 26 launch. The system has sold 836,000 units this far according to Media Create. This is well below the 1.5 million Nintendo said it had planned on shipping to Japan by the March 31 end of the previous fiscal year. It's unclear how many of those systems were actually shipped to retail, but the 3DS does not appear to be supply constrained at present.