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Is it better to buy before stock split or after the split: a quick study

min read

In this quick study, we're trying to quantify if it's better to buy the stock before or after the split.

A stock split is a corporate action that companies take to increase the number of outstanding shares and decrease the value of each share. In other words, as a company's stock price increases, investors are rewarded with higher returns.

A stock split attracts a lot of attention, the media writes about it, and people talk about it. It may be a sign that a company is doing well because its share price has increased, and it also could bring in new investors who are attracted to the more affordable share price. On the other hand, it also could cause some volatility in the stock, so you may want to be prepared for changes in the price. In this quick study, we're trying to quantify if it's better to buy the stock before or after the split.

The Setup

  • Buying and holding $10K worth of shares one month before the split and one month after the split
  • No stop loss (holding for one month no matter what)
  • Only buying if the split was 2 for 1 or more
Example Strategy Setup

Notes: There were about 200 splits since 2016. There were some very low trading volume stocks that register like one trade per day or even 0 trades - we're ignoring these in the calculations. Also here, we're assuming that you know about the split one month in advance which may not always be the case.

The Results

Seems like it's way better to buy before the split. At least it has been like that since 2016.

Disclaimer: not financial or investment advice. All calculations are made with Breaking Equity.

Breaking Equity is neither a broker, nor provides investment advice. Breaking Equity is a platform designed and built for user generated trade testing and algorithms. It is not intended to be trading or investing advice. Breaking Equity does not recommend stocks, equities, or any other vehicle to buy or sell. Breaking Equity is a platform to enable you to make your own investment decisions. All data, analysis, tests, metrics, transactions, signals, and platform are presented ‘AS-IS’ and without warranty. Breaking Equity does not guarantee performance and holds no liability for your trading, algorithms or executions via broker services. Please invest wisely. Please do your own research and due diligence before trading or investing.