Unable to Install RPM's from a Text File

I have a text file that contains a list of RPM's that my RHEL 6.7 servers should match.
So I would like to install any RPM's in the text file that are not already installed on my server.

A web search found the following command that should work.

yum -y install $(cat file_name)

When I run the command, I get a list of all the RPM's with 'available.' in front.
Then it finishes with 'Error: Nothing to do'

If I run the yum command with a single RPM listed. It will install, but no luck using the text file.

How do I get the RPM's to install from the text file?