The online advertising market in 2013 was approximately $120 billion globally, with Google capturing about 33% of the market, Facebook second, and numerous smaller players, establishing the total addressable market that any company like Twitter must capture share from

normativepending

Speaker

Aswath Domodaran

Evidence Quote

But the entire online advertising business in 2013 was about $120 billion. That's the whole global online advertising business. The biggest player, by far, is Google. And if you look at the breakdown, you can see, Google is about 33% of the global online advertising.

Source

Valuation in Four Lessons | Aswath Damodaran | Talks at GoogleTalks at Google
Created: 8/11/2026, 1:45:13 AM

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