I find the SoftBank action more credible (even convincing, given the other submissions in which it was discussed) than the split theory.

Because there is no rational way that a company with $27bn revenue rises from ~$130bn to ~$450bn in market cap in three months. I've posted in another thread how VW builds 11 million cars each year, that's 1 out of 8 cars globally, at immense profit, and is valued at €80bn.

In any case, if the cause for the tweet was solely that the stock price was too high, well -- it was $700 back then, so I guess we'll see another split real soon now again.