ETF Symbol: Price 42.18 Volume 3200 Avg Vol 50980 RSf 88.4 $Vol(21d) 2m 52 wk High 42.96 52 wk Low 23.10 (as of 2010-09-09) Total Returns: 1 day 0.3% 5 day 3.0% 1 month 1.2% 3 month 6.9% 6 month 2.3% 9 month 15.4% 1 year 26.5%   Compare Funds: Correlated Group: Health Care (View cGroup) (All Groups)

Correlated Funds

Most Correlated   Least Correlated iShares Dow Jones U.S. Pharmaceuticals IHE 0.97 Direxion Daily Mid Cap Bear 3X Shares MWN -0.85 Vanguard Health Care VHT 0.90 Proshares Short SmallCap600 SBB -0.86 iShares Dow Jones U.S. Healthcare Fund IYH 0.90 Proshares UltraShort SmallCap600 SDD -0.86 iShares NASDAQ Biotechnology Index Fund IBB 0.88 Proshares UltraShort Midcap 400 MZZ -0.86 PowerShares Dynamic Healthcare PTH 0.88 ProShares Short Midcap 400 MYY -0.86 Select Sector SPDR Fund - Health Care XLV 0.88 ProShares UltraPro Short MidCap400 SMDD -0.87 Vanguard Small-Cap Growth VBK 0.87 Direxion Small Cap Bear 3X Shares TZA -0.87 iShares Russell 2000 Growth Index Fund IWO 0.87 Proshares UltraShort Russell2000 TWM -0.87 Vanguard Extended Market VXF 0.87 Proshares Short Russell 2000 RWM -0.87 iShares Small Cap 600/BARRA Growth Index Fund IJT 0.87 Proshares UltraShort Russell2000 Growth SKK -0.87

These 126 day (6 month) correlations can be considered short term, focusing on recent price movements. Correlations are only calculated for actively traded funds. As of: 2010-09-03.

Exchange-traded funds are similar to index funds that trade like a single stock. Until the advent of the ETF, it was impossible to trade indexes this easily through an equity account. Most ETFs are relatively static in make-up, like the SPY or QQQQ index funds. Others, like some of the PowerShares funds, are dynamic and the holdings are changed routinely. ETFs have risks similar to stocks in that their value can rise or fall at the discretion of the marketplace. Some ETFs, like international funds and narrowly based indexes, have special risks that the investor should be aware of. However, used properly ETFs can provide an efficient and effective investment vehicle for achieving results that were near impossible for the typical investor to achieve prior to their development.