In trading on Tuesday, shares of the iShares Barclays TIPS Bond Fund ETF ( TIP) entered into oversold territory, changing hands as low as $119.28 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 Barclays TIPS Bond Fund, the RSI reading has hit 29.3 — by comparison, the RSI reading for the S&P 500 is currently 70.3. A bullish investor could look at TIP's 29.3 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), TIP's low point in its 52 week range is $118.43 per share, with $123.44 as the 52 week high point — that compares with a last trade of $119.30. iShares Barclays TIPS Bond Fund shares are currently trading down about 0.3% on the day.