ETFs to Watch April 22, 2013 (GDXJ, IBB, RSX)

Here is the ETF Professor's ETF Watch List for Monday April 22, 2013. The iShares Nasdaq Biotechnology Index Fund (NASDAQ:

) is one to watch. Earnings play: Market Vectors Oil Services ETF (NYSE:

). The Market Vectors Junior Gold Miners ETF (NYSE:

) should be in play again. The iShares Dow Jones U.S. Healthcare Providers Index Fund (NYSE:

) is worth a look. Emerging markets plays of the day: Market Vectors Brazil Small-Cap ETF (NYSE:

), iShares FTSE China 25 Index Fund (NYSE:

) and the Market Vectors Russia ETF (NYSE:

). Forex play of the day: ProShares UltraShort Euro (NYSE:

). Bond play of the day: PowerShares Senior Loan Portfolio (NYSE: