E-commerce investors have little to be thankful for this year

The 25-stock Internet Retailer Online Retail Index was mostly a bunch of turkeys last week, as the e-commerce stock index sank 3.77%. For the year, the index of online retailers and e-commerce technology vendors is off 16.9%.

The broader stock market also took a licking last week, as the Dow Jones Industrial Average lost 2.94% and the Standard & Poor’s 500 Index fell 3.81%. But the Dow remains up 1.9% for the year while the S&P 500 is off only 3.3%.

Only five stocks in the Online Retail Index advanced last week, led by e-retailer Vitacost, which recently announced a 26% increase in revenue for its third quarter.

Hardest hit was Keynote Systems, a provider of performance management technology for web and mobile sites, whose shares lost more than 14% last week.

Here are the best-performing stocks last week in the Online Retail Index and the percentage gain in stock price for each:

• Vitacost, 6.3%

• eGain, 4.3%

• American Greetings, 3.4%

• ValueClick, 0.6%

• Digital River, 0.2%

Here are the Online Retail Index stocks that performed least well last week and the percentage loss in stock price for the week:

• Keynote Systems, -14.4%

• Shutterfly, -11.5%

• Netflix, -11.0%

• Amazon, -9.3%

•Bluefly, -9.1%

The 25 companies in the Internet Retailer Online Retail Index are: 1-800-Flowers.com Inc., Akamai Technologies, Amazon.com Inc., American Greetings Corp., Bidz.com Inc., Blue Nile Inc., Bluefly Inc., Coastal Contacts Inc., DemandTec Inc., Digital River Inc., eBay Inc., eGain Communications Corp., Keynote Systems Inc., LivePerson Inc., Netflix Inc., NutriSystem Inc., Overstock.com Inc., PetMed Express Inc., Shutterfly Inc., Systemax Inc., U.S. Auto Parts Network, United Online Inc. (owner of FTD.com), ValueClick Inc., Vistaprint Ltd and Vitacost.com Inc.