In most cases, use sentence case for headlines. No punctuation is required at the end except when connecting phrases or sentences.
Examples:
A framework to find Canada’s competitive advantage in manufacturing.
A one-year MBA just makes sense.
There are a few exceptions:
Title caps are used in website buttons.
Example: Attend an Event; Get Started
Title case, upper case, and symbols are used in creative settings, such as banners or cover designs.
Example: READY SET GO; 92% EMPLOYMENT RATE CLASS OF 2014
Ivey Business Journal articles use title caps.
Example: A Greek Tragedy with No Written Final Act