The National Journal's Next America's Hispanic Sector Finding Affluence in Owning Businesses covers the growing number of affluent Hispanics, many of which are small business owners.
.. the latest U.S. census figures show that Hispanic households with an annual income of at least $100,000 surpassed the 1.6 million mark in 2010 ... Those with household incomes between $75,000 and $99,999 accounted for an additional 1.3 million ..
The article attributes much of this growth to small business ownership, saying that there are roughly 3 million Hispanic owned small businesses in the U.S.
A related article, Small Business Launches Highest Among Latino's, covers this in more detail.
BTW, if you like demographic data (and who doesn't) The Next America is well worth following. Their tag line is How Demography Shapes the National Agenda and they describe themselves as exploring "the political, economic and social impacts of profound racial and cultural change."
I find their articles solidly researched and non-partisan, which is unusual these days for a DC-based organization.