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 - Cramer on EVX - Stock Picks) 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.

The Market Vectors Global Alternative Energy ETF(GEX Quote - Cramer on GEX - Stock Picks) climbed from an E grade, which equates to a "sell" recommendation, to a mark of C-minus.

Closely related to the environmental funds are two that invest in the business of supply water. The PowerShares Water Resources ETF(PHO Quote - Cramer on PHO - Stock Picks) moved from a D to a B-minus grade, while the First Trust ISE Water Index Fund(FIW Quote - Cramer on FIW - Stock Picks) climbed from an E-plus to a mark of C.

Of all the upgrades, the First Trust Amex Biotechnology ETF (FBT Quote - Cramer on FBT - Stock Picks) stood out performancewise. Its double-digit gains of 15.57% and 13.45% for the most recent three months and 12 months, respectively, pulled its grade from a C-minus to an A.

FBT's major portfolio holdings include Vertex Pharmaceuticals(VRTX Quote - Cramer on VRTX - Stock Picks), Amgen(AMGN Quote - Cramer on AMGN - Stock Picks), Genentech(DNA Quote - Cramer on DNA - Stock Picks) and Gilead Sciences(GILD Quote - Cramer on GILD - Stock Picks).

The perils of leverage are graphically demonstrated in the six ETFs on the list that suffered major deteriorations in grades. Five of them include "ultra" in their respective names, indicating gearing that hurts on the downside just as much as it supplies additional pleasure when prices are rising.

The only nonleveraged fund on the bottom section of the table is the Wisdom Tree International Energy ETF(DKA Quote - Cramer on DKA - Stock Picks), whose grade tumbled from an A to a C-plus. That reduced its recommendation from TheStreet.com Ratings from a "buy" to a "hold".

Another energy ETF, the leveraged ProShares Ultra Oil & Gas(DIG Quote - Cramer on DIG - Stock Picks), is also found on the lower list.

DKA's major holdings include Total(TOT Quote - Cramer on TOT - Stock Picks), Cnooc(CEO Quote - Cramer on CEO - Stock Picks), BP(BP Quote - Cramer on BP - Stock Picks) and Royal Dutch Shell(RDS.A Quote - Cramer on RDS.A - Stock Picks).

LARGEST RECENT EXCHANGE TRADED FUND RATINGS GRADE CHANGES
NAME, TICKER TheStreet.com RATINGS CURRENT GRADE	PREV. RATINGS GRADE	NEW STATUS	PREV. STATUS	3-MO. TOTAL TER'N (%)	12-MO. TOTAL TER'N (%)
MOST IMPROVED
Market Vectors Environment Ind ETF (EVX) A	C-	Buy	Hold	4.98	8.20
First Trust AMEX Biotechnology (FBT) A	C-	Buy	Hold	15.57	13.45
ProShares Ultra Short Utilities (SDP) B-	D-	Buy	Sell	9.49	-5.45
HealthShares Infectious Dis (HHG) C+	E+	Hold	Sell	8.67	-3.26
HealthShares Cardio Devices (HHE) A-	C	Buy	Hold	6.52	5.96
PowerShares Water Resources (PHO) B-	D	Buy	Sell	4.28	6.70
iShares DJ US Medical Devices Idx (IHI) B+	C-	Buy	Hold	5.13	5.06
First Trust ISE Water Index Fund (FIW) C	E+	Hold	Sell	2.20	7.90
HealthShares Autoimmune-Inflammatio (HHA) C-	E	Hold	Sell	6.87	2.69
Market Vectors Global Alt Energy (GEX) C-	E	Hold	Sell	-4.75	12.53
MOST DETERIORATED
ProShares Ultra Sht Rus 2000 Growth (SKK) D+	A	Sell	Buy	-5.42	-2.36
ProShares Ultra Short Russell 2000 (TWM) C-	A+	Hold	Buy	-3.78	1.20
ProShares Ult Sht Russell 2000 Val (SJH) C+	A+	Hold	Buy	0.27	8.01
ProShares Ultra Short Real Estate (SRS) E-	C-	Sell	Hold	7.76	-14.54
ProShares Ultra Oil & Gas (DIG) C	A-	Hold	Buy	-19.68	1.07
WisdomTree International Energy (DKA) C+	A	Hold	Buy	-8.91	3.00
Source: TheStreet.com Ratings - Data as of 7/31/2008. For an explanation of our ratings, click here.