In trading on Thursday, shares of the iShares MSCI Poland Capped Investable Market Index Fund ETF ( EPOL) entered into oversold territory, changing hands as low as $23.6542 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 iShares MSCI Poland Capped Investable Market Index Fund, the RSI reading has hit 27.9 — by comparison, the RSI reading for the S&P 500 is currently 49.8. A bullish investor could look at EPOL's 27.9 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), EPOL's low point in its 52 week range is $21.58 per share, with $29.98 as the 52 week high point — that compares with a last trade of $23.71. iShares MSCI Poland Capped Investable Market Index Fund shares are currently trading down about 3.3% on the day.