Par value is the price of a financial instrument at the time it is issued while its market value is the price it is worth to buyers and sellers at any given moment.

But once the stock begins trading, the par value becomes irrelevant as pricing is determined by market supply and demand. For example, the par value for Amazon.com Inc. (ticker: AMZN) stock is $0. ...

Typically, it's represented as a fixed percentage of the bond’s par value. Payments may be made annually or semi-annually, depending on the specifics of the bond. For example: A bond with a par ...