(close-open)/(high-low) may contain useful information about stock prices. Is there a commonly accepted name for this quantity?
If it weren't on Google, it wouldn't exist. Fortunately it is. It is called
Balance of Power (BoP)
The second link explains it is a simplification of Igor Livshin's balance of market power (BMP) indicator. If you google BOP, you will find links like Balance of Power (BOP)