What "Street" means here?

Question

And what about his famous prediction that Apple will sell 45 million iPhones in 2009 — a number that he acknowledges is “way ahead of the Street”?

Answer 1

Wall Street.  Apple will not sell that many phones.

Answer 2

it refers to Wall Street.

In the context, it refers more specifically to "consensus estimates" by analysts in big firms/ banks at Wall Street (Wall Street being not necessarily a reference to the physical place)

Answer 3

"Wall Street" or "The Street" means the investment profession.

The New York Stock Exchange is located at 11 Wall Street in New York.  Thus, "Wall Street" continues in use even though most financial firms are not there, most trading is done electronically, not on the exchange floor and the biggest financial market in the world is in Chicago (Chicago Mercantile Exchange changed it's name to CME Group because it does so much more than the commodities it started with.)