Man it's never ending, Nintendo is in a rough position right now, with the stock that keep decreasing again and again.
Which is great for people who want to make money, right? Most analysts know that the stock market reaction to Nintendo's E3 was very premature.
1st, Nintendo changed their way of announcing things (more spaced out with directs, instead of providing all the information in one sitting like the E3).
2nd, Analysts know that Switch caught developers by surprise (some of them straight up admitted it) - ergo, development and support for the system startet later than usual.
This is a great situation. The ods of switch failing are very small. Yet - to the joy of stock owners - the E3 presentation somehow managed to decrease the stock value, eventought there isn't a "real" problem here. That's great. If I were a stock owner, I would tell everyone I know that Nintendo fucked up and or is dying. The press and the media is already helpng me, because that's how they make money, and Nintendo doom articles are always entertaining/click-worthy.
I'd then just wait and wait till the lowest point of this "doom period" and then buy extra Nintendo stock, because the chances are very high it will go up again in the forseable future, and that's how I make profit.