By creating price definitions, you can specify the price titles that you want to use on the stock cards and by clicking on the 'Transfer Automatically' button, you can update your stocks that you have entered the price information before.

Press the 'Transfer Automatically' button to load the default price titles.

You can update the stock price titles in your existing stock cards by clicking the update stock price definitions button on the side of the definition(it can be seen at red box).