In trading on Friday, shares of the iShares Morningstar Small-Cap Value ETF ( JKL) entered into oversold territory, changing hands as low as $120.926 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 Morningstar Small-Cap Value, the RSI reading has hit 29.96 — by comparison, the RSI reading for the S&P 500 is currently 33.6. A bullish investor could look at JKL's 29.96 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), JKL's low point in its 52 week range is $104.77 per share, with $129.87 as the 52 week high point — that compares with a last trade of $121.74. iShares Morningstar Small-Cap Value shares are currently trading off about 0.3% on the day.