InsiderFlow › Glossary › What is a stock split?
A stock split divides each share into several shares of proportionally reduced value: the price drops, the company's value stays identical.
In a 4-for-1 split, whoever had 1 share worth $400 ends up with 4 shares at $100: same pie, more slices. Companies do it to make the stock psychologically more accessible and liquid.
A reverse split is the opposite — 10 shares at $1 become 1 at $10 — and often signals trouble: it's used to avoid delisting when the price has collapsed below exchange minimums.
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Directly no: it's pure arithmetic. Historically split announcements accompany good phases, but that's correlation, not cause.
Buffett's choice to discourage short-term speculation: the class A share trades above $600,000.