William %R is a tool that helps people who like to buy and sell stocks or other types of things called securities. It helps them figure out if the thing they want to buy or sell is likely to go up or down soon. The tool is named after someone called Larry Williams, who made it a long time ago.
The tool uses numbers to help people make decisions. It looks at how much a security's price has gone up or down over a certain period of time. Then it uses some math to figure out if the security is likely to go up or down in the future. The tool gives a number between 0 and -100 to show how likely it is that the security will go up soon. If the number is closer to 0, it means that the security is more likely to go up. If the number is closer to -100, it means that the security is more likely to go down.
People who use this tool need to be careful and not just rely on it to make decisions. They need to use other tools and information to make sure they are making the best choices. But if used correctly, this tool can help people make good decisions about buying and selling securities.