What is the effect of a stock split on share price?

The price depends on the stock split ratio. The most common split ratios are 2:1 or 3:1, which means that after the split, you will have two or three respectively, for every you held beforehand. 

For example, if the stock’s face value is ₹10, and there is a stock split in the ratio of 2:1, then the face value will change to ₹5. If you owned 1 share of ₹10 before the split, you would now own 2 shares of ₹5 after the split. Here’s the breakdown for this example:

Split ratio(A)Old face value(B)Shares held before split(C)Share price before split(D)Investment value before split (C*D)New face value(A*B)Shares held after splitE =(C/A)Share price after splitF =(D/A)Investment value after split(E*F)
1:21010050050000520025050000
1:51010050050000250010050000

Note: In a stock split, the investment value remains the same. The face value and stock price decrease and the number of stocks held increases.