In trading on Thursday, shares of the WisdomTree Emerging Markets Dividend Growth Fund ETF ( DGRE) entered into oversold territory, changing hands as low as $23.6101 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 WisdomTree Emerging Markets Dividend Growth Fund, the RSI reading has hit 29.4 — by comparison, the RSI reading for the S&P 500 is currently 44.7. A bullish investor could look at DGRE's 29.4 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), DGRE's low point in its 52 week range is $22.82 per share, with $28.27 as the 52 week high point — that compares with a last trade of $23.70. WisdomTree Emerging Markets Dividend Growth Fund shares are currently trading down about 1.4% on the day.