The following ETFs are the most overbought and oversold for Friday, based on research published in Larry Connors’ book, High Probability ETF Trading. See which ETF funds made our list.

What are the most overbought and oversold ETF funds in our database ahead of Thursday’s trading? The iShares MSCI Spain Index Fund ETF in overbought territory and the PowerShares DB U.S Dollar Index Bullish ETF, which has closed in oversold territory are among our list.

Oil funds like the iPath S&P Goldman Scahs Crude Oil Trust Index ETN, OIL, and the Oil Service HOLDRS ETF, OIH, are among the most oversold funds for Wednesday. Here are a few other ETF funds that made our list.

The PowerShares DB U.S. Dollar Index Bullish ETF, UUP, again tops the list of most oversold exchange-traded funds. See what other ETFs made our most overbought and oversold list for Tuesday.

Among the ETFs for Monday’s trading, the iShares MSCI Spain Index Fund ETF is overbought and the PowerShares DB U.S. Dollar Index Bullish ETF is oversold. See the other ETF funds that made our most overbought and oversold list.

The key to trading ETFs is to properly identify them when they are at overbought and oversold levels. The Pharmaceutical HOLDRS ETF fund is in our database for Friday’s trading. Find out if it’s overbought or oversold.

The ProShares UltraShort Dow 30 ETF and iShares S&P U.S. Preferred Stock Index Fund ETF are among those in our most overbought and oversold database for Thursday’s Trading. Find out what other ETF funds made the list.

Only a handful of ETF funds are in our database today, but among the overbought is the PowerShares Wilderhill Clean Energy Portfolio ETF. See what other ETFs made our most overbought and oversold list for Wednesday.