In trading on Monday, shares of the iShares 2017 AMT-Free Muni Term ETF ( MUAF) entered into oversold territory, changing hands as low as $55.09 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 2017 AMT-Free Muni Term, the RSI reading has hit 29.9 — by comparison, the RSI reading for the S&P 500 is currently 60.4. A bullish investor could look at MUAF's 29.9 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), MUAF's low point in its 52 week range is $53.18 per share, with $57.71 as the 52 week high point — that compares with a last trade of $55.09. iShares 2017 AMT-Free Muni Term shares are currently trading off about 0.2% on the day.