Which investment strategy involves investing the same amount of money at regular intervals?

The investment strategy that involves investing the same amount of money at regular intervals is known as dollar cost averaging. This approach allows investors to reduce the impact of volatility on the overall purchase. By committing to invest a fixed dollar amount regularly, regardless of the asset's price, an investor can buy more shares when prices are low and fewer shares when prices are high. Over time, this strategy can lead to a potentially lower average cost per share, mitigating the risks associated with unpredictable market fluctuations.

In contrast, market timing attempts to predict the best times to buy and sell based on anticipated market movements, which can be highly challenging and often leads to missed opportunities. Index investing focuses on purchasing funds that track a particular market index, and this strategy does not inherently involve regular investments of the same amount. Value investing is a strategy where an investor looks for undervalued stocks to buy and hold, typically requiring more analysis of individual companies rather than a systematic investment approach at regular intervals.