High-end server company Supermicro has completed a 10-to-1 stock split, with shares opening on a post-split basis on Tuesday. Here’s what to know. Since the end of August, Super Micro Computer, Inc. has had a rough time.

In other words, if Super Micro Computer shares were trading at $1,000 before the split, an investor holding one share before the split would hold 10 shares priced at $100 each after the split. (Companies can also hold reverse splits, as some have done lately .)

Super Micro shares begin trading Tuesday on a split-adjusted basis. The stock’s drop between the announcement date and effective date could be the steepest in more than two years.