Since its IPO, American Express has split its stock four times. The first one (in 1983) was a 4-for-3 split, and fractional shares weren't really a thing back then, but for the sake of this article, we'll assume it was possible. So, here's the stock split history and what it would mean if you had bought one share at the IPO:

Super Micro Computer (NASDAQ: SMCI) had its initial public offering (IPO) in March 2007 at a price of $8 per share. The stock frequently saw volatile swings, but it started of 2020 priced at roughly $24 per share -- tripling its IPO price.