An investor has 360 shares of Walmart, which just declared a 2 for 1 stock split. On the day before the stock split, the shares were trading at $80 per share. The day after the split, how many shares does the investor have and how much is each one worth?

After a 2 for 1 stock split, the number of shares an investor holds doubles. In this case, the investor originally has 360 shares of Walmart. Following the stock split, they will have 720 shares since each existing share splits into two.

The value of each share post-split adjusts according to the split ratio. Since the shares were trading at $80 per share before the split, the price per share will be halved following the 2 for 1 split. Therefore, after the split, each share will be worth $40.

This understanding of how stock splits affect both the quantity of shares owned and the price per share is a crucial aspect of investing and personal finance. The total investment value remains unchanged immediately after the split, as the increase in the number of shares offsets the decrease in the value per share.