In trading on Friday, shares of the PowerShares DB G10 Currency Harvest Fund ETF (DBV) entered into oversold territory, changing hands as low as $25.01 per share. We define oversold territory using the Relative Strength Index, or RSI, which is a technical analysis indicator used to measure momentum on a scale of zero to 100. A stock is considered to be oversold if the RSI reading falls below 30.In the case of PowerShares DB G10 Currency Harvest Fund, the RSI reading has hit 29.7 — by comparison, the RSI reading for the S&P 500 is currently 43.1. A bullish investor could look at DBV's 29.7 reading as a sign that the recent heavy selling is in the process of exhausting itself, and begin to look for entry point opportunities on the buy side. Looking at a chart of one year performance (below), DBV's low point in its 52 week range is $24.70 per share, with $26.40 as the 52 week high point — that compares with a last trade of $25.03. PowerShares DB G10 Currency Harvest Fund shares are currently trading off about 1.1% on the day.