https://www.theguardian.com/technology/2020/aug/12/teslas-stock-split-is-likely-to-send-the-share-price-even-higher

More retail investors are expected to jump in now shares suddenly look relatively affordable

Elon Musk got nearly $4bn richer on Wednesday morning, probably before he even got out of bed. Why? Because on Tuesday evening Tesla (one-fifth owned by Musk) announced a “stock split” that in pre-market speculation early on Wednesday drove up the already stratospheric valuation of the company by another 7%.