Question About Investments - bonds, mutual funds, etc?

Michael A. asked: Do corporate, municipal and government bonds, treasury securities, mutual funds, ETFs and CDs have ticker symbols and can be purchased like stocks (as in I buy shares)?

Simple Government Bonds Question?

numbaONE!!! asked: The rates on these bonds change continuously throughout the year, and i have no trouble whatsoever in understanding them.
however, i have one question…
Once a government bond is bought, does the rate of return on it change?
For Example:
If i were to buy into a 10-year Treasury Note at 3.027% today, would that 3.027% remain [...]