It seems as though shareholders weren't completely convinced by the first showing of the Switch late last week, and Bloomberg is reporting that Nintendo's share price fell 5.8 percent to 23,750 yen on Friday, which was then followed by additional drop of 2 percent today (via Nintendo Life).
Ace Research Institute analyst Hideki Yasuda explained it thus: "The pricing and game titles were as expected; the stock was bought up on hopes and sold on the fact. The first two weeks of sales will be critical for Nintendo, and they will have to sell the 2 million units they forecast for the quarter. The Switch's success will be determined at the start."
Nintendo will take comfort from hearing widespread reports that the first batch of Switch consoles has sold out, but the pressure is still on for the Kyoto-based company as it prepares to launch its new console in March.