There are is an important difference between FDN and PNQI. That being the latter only holds Nasdaq stocks while FDN holds stocks that trade on the Nasdaq and the New York Stock Exchange. Meaning although Salesforce.com (NYSE: CRM), LinkedIn (NYSE: LNKD) and Twitter (NYSE: TWTR) combine for just 9.2% of FDN’s weight, the average decline of 8.4% over the past month for those stocks is problematic for FDN. Those stocks are not members of PNQI’s lineup.

The Market Vectors Retail ETF (NYSEArca: RTH) has the largest Amazon allocation of the three ETFs mentioned here at 9.84%, but RTH is also the best performer of the trio today with a loss of just 1.1%.

That is the result of the ETF’s heavy bias towards consumer staples, recently one of the better-performing sectors within the broader market. Wal-Mart (NYSE: WMT), CVS Caremark (NYSE: CVS), Walgreen (NYSE: WAG) and Costco (NasdaqGS: COST), all familiar holdings in some of the largest staples ETFs, combine for over 28% of RTH’s weight. [Super Staples ETFs]

Market Vectors Retail ETF

Tom Lydon’s clients own shares of Amazon, Facebook and Google.