Although, I guess Merriam-Webster recognizes it as a word:
Main Entry: bro·king Function: noun Date: 1569 chiefly British : the business of
a broker : brokerage
The business of broking sounds a lot like Wall Street trading to my uneducated ear. There are big centers around the world, with open cubicle format and big monitors on the walls showing current quotes/prices and such.
At any rate...I started out thinking "broking" was a funny word, but ended up feeling overwhelmed by an industry I didn't know existed that's actually related to the paycheck I bring home.