Select Sector SPDR-Financial (XLF) has 81 cap-weighted holdings, Vanguard Financial Index Fund (VFH) has 492 cap-weighted holdings, iShares Dow Jones US Financial Sector (IYF) has 258 cap-weighted holdings and , iShares Dow Jones US Financial Services (IYG) has 119 cap-weighted holdings.

FORBES: Financial Sector Is Full Of Crummy Stocks

The exclusion of financials sets the index apart, as does the inclusion of companies that are not US-based (the Dow Jones Industrial Average for instance only covers companies based in the United States).

FORBES: MAT's Strong Dividend History Helps it Reach 'Top Dividend Stock of the Nasdaq 100'

Take the iShares Dow Jones US Utilities, an exchange-traded fund that owns major utility stocks.

FORBES

The negative tone continued into US trading hours, with the Dow Jones falling steadily from mid-morning, to finish the day 1.6% lower.

BBC: Markets fall on fear of Italy post-election deadlock

In his book, Make It In America: The Case for Re-Inventing the Economy, Dow Chemical Company CEO Andrew Liveris calls us to turn back the clock and return to a time when America was defined by the things it built.

FORBES: Innovation, Not Manufacturing, Will Bring Jobs

On Thursday the Dow Jones had climbed nearly 2% on hopes that the US economy was set to avoid a double-dip recession.

BBC: Corporate woes hit Wall Street