Broadcom is leading the S&P 500 in December, with shares of the tech company gaining 51% so far this month, according to Dow Jones Market Data. That puts Broadcom stock on track for its best month on record.

There aren't any rules about why or how often a company can split its stock. Broadcom wouldn't even be the first company to split its stock multiple times in a short period. Tesla executed two stock splits in the two years between August 2020 and 2022. Each share investors owned before those splits would equate to 15 shares today.