Two 'Green' ETFs Clean Up

The health/biotechnology sector dominated half the top 10 list of the most recently improved exchange-traded funds, as measured by improvements in their grades computed by TheStreet.com Ratings.

A pair of "green" ETFs also adorn the most-improved section of the accompanying table of major grade changes. The Market Vectors Environmental Industry ETF(EVX Quote) recently improved from a mark of C-minus from TheStreet.com Ratings' objective grading system to an A, elevating it from a "hold" to a "buy" recommendation.

Perhaps it's a sign of the times that an environmental fund and an alternative energy ETF appear in the "most improved" section while two more energy funds that focus on the more traditional petroleum side of the energy industry populate the "most deteriorated" section of the table....