In trading on Monday, shares of the WisdomTree Global Equity Income Fund ETF ( DEW) entered into oversold territory, changing hands as low as $42.66 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 Global Equity Income Fund, the RSI reading has hit 28.7 — by comparison, the RSI reading for the S&P 500 is currently 39.7. A bullish investor could look at DEW's 28.7 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), DEW's low point in its 52 week range is $42.38 per share, with $50.11 as the 52 week high point — that compares with a last trade of $42.93. WisdomTree Global Equity Income Fund shares are currently trading down about 1.6% on the day.