In contrast to Micro Trading (which is industry specific), Macro Trading is taking advantage of changes within a large sector. Traders utilizing this strategy will study Macro factors to analyze and predict the future performance of a specific sector. They use economic data to inform decisions about growth, unemployment, and inflation. A popular form of Macro Trading is currency speculation (eg keeping track of prices of the Dollar vs the Rupee and looking to capitalize on mispricing).
We don't know everything about the markets. We're just devoted to learners. Taken from those smarter than ourselves, here's how we define Macro Trading.