The U.S. Department of Transportation reported last week that Americans are cutting back on driving. Department of Energy crude oil inventories are at a six-month high, and gasoline prices around the country have retreated to about $2 a gallon.

In the face of 542,000 initial jobless claims, more than 4 million continuing claims and an unemployment rate at a 14-year high of 6.5%, U.S. companies are trying to shrink their way to profitability. Americans are hurting, and the pain worsens when they check their retirement and other brokerage accounts.

Market volatility has been breathtaking, with the VIX spiking above 80 on Thursday as the Dow Jones Industrial Average broke its Oct. 10 low. For the five trading days ending Thursday, the Dow Industrials lost 14.4% of its value, and the S&P 500 slumped 17.4%.

Over the same period, the average energy and natural resources fund tracked by TheStreet.com Ratings dropped 23.2%. The spot price of West Texas Intermediate crude oil has crashed 65.8% to $49.62 per barrel from its 2008 high, with 14.8% of the decline coming last week.

The worst-performing energy fund last week was the Direxionshares Energy Bull 3X Shares ( ERX). The fund, which has only been trading since Nov. 6, was chopped in half, losing 49.37% for the week. The fund employs 300% leverage to the return on the Russell 1000 Energy Index.

With just 150% leverage, the ProFunds Oil Equipment, Services, & Distribution UltraSector ProFund ( OEPIX) pumped out a loss of 38.85% for fund holders. Oil drillers make economic decisions about the viability of their projects based, in part, on price expectations of oil. Low oil prices are bad news for fund holdings of Helix Energy Solutions Group ( HLX), off 56.14%; Crosstex Energy ( XTXI), down 46.92%; ION Geophysical ( IO), off 49.39%; and Hercules Offshore ( HERO), down 42.70% for the period.

The third-worst-performing fund last week was the Market Vectors-Coal ETF ( KOL), shedding 38.55% on declines of 54.10% in Patriot Coal ( PCX), 51.82% in Walter Industries ( WLT), and 51.77% in International Coal Group ( ICO). The spot price for low sulfur, Big Sandy Barge coal is down to $77.5 per short ton, or 41.9% off its June 2008 high.

Worst Performing Energy Funds for the Week Ending Thursday Nov. 20
Fund
Ticker
Rating
Fund Type
1 Week Total Return
Direxionshares Energy Bull 3X Shares
ERX
U
ETF
-49.37%
Profunds Oil Equiptment Dist & Svcs UltraSector ProFund
OEPIX
U
Open-End
-38.85%
Market Vectors-Coal ETF
KOL
U
ETF
-38.55%
ProFunds Basic Materials UltraSector ProFund
BMPIX
E-
Open-End
-38.01%
Claymore/MAC Global Solar Energy Index ETF
TAN
U
ETF
-37.92%
Kayne Anderson Energy Development Co
KED
E-
Closed-End
-37.21%
ProShares Ultra Oil & Gas
DIG
D-
ETF
-34.73%
Tortoise Energy Capital Corp
TYY
C
Closed-End
-32.70%
Rydex 2X S&P Select Sector Energy ETF
REA
U
ETF
-32.57%
iShares S&P Global Clean Energy Index Fund
ICLN
U
ETF
-32.11%
Source: Bloomberg & TheStreet.com Ratings

Four inverse funds were the only gainers last week, with the 300% inverse leveraged Direxionshares Energy Bear 3X Shares ( ERY) skyrocketing 68.40% over the five trading days. At 200% negative leverage were the Rydex Inverse 2X S&P Select Energy ETF ( REC), up 42.06%, and the UltraShort Oil & Gas ProShares ( DUG), up 41.10%. Industry leaders ExxonMobil ( XOM), off 9.15%; Chevron ( CVX), down 14.18%; and Schlumberger ( SLB), off 23.40%; assisted the appreciation in these funds.

Best Performing Energy Funds for the Week Ending Thursday Nov. 20
Fund
Ticker
Rating
Fund Type
1 Week Total Return
Direxionshares Energy Bear 3X Shares
ERY
U
ETF
68.40%
Rydex Inverse 2X S&P Select Sector Energy ETF
REC
U
ETF
42.06%
ProShares UltraShort Oil & Gas
DUG
B-
ETF
41.10%
ProFunds Short Oil & Gas ProFund
SNPIX
C+
Open-End
19.67%
ProShares Short Oil & Gas
DDG
U
ETF
17.26%
iPath DJ-AIG Natural Gas Total Return Sub-Index ETN
GAZ
E+
ETF
-2.82%
United States Natural Gas Fund LP
UNG
E+
ETF
-3.56%
iPath DJ-AIG Energy Total Return Sub-Index ETN
JJE
E
ETF
-8.93%
Petroleum & Resources Corp
PEO
C+
Closed-End
-9.58%
iShares S&P Global Nuclear Energy Index Fund
NUCL
U
ETF
-10.17%
Source: Bloomberg & TheStreet.com Ratings

Parking lots full of unsold, imported automobiles are filling up at the port of Long Beach, California, while Honda ( HMC) cuts U.K. auto production. Last week, General Motors ( GM) and Ford ( F) got rebuffed from Congress after asking for a bailout. Don't look for a quick rebound for motor fuel demand.

The silver lining is that these lower energy costs should be helpful in reducing the pocketbook stress on American consumers as we work our way though this economic trough.

For an explanation of our ratings, click here.
Kevin Baker became the senior financial analyst for TSC Ratings upon the August 2006 acquisition of Weiss Ratings by TheStreet.com, covering mutual funds. He joined the Weiss Group in 1997 as a banking and brokerage analyst. In 1999, he created the Weiss Group's first ratings to gauge the level of risk in U.S. equities. Baker received a B.S. degree in management from Rensselaer Polytechnic Institute and an M.B.A. with a finance specialization from Nova Southeastern University.