In trading on Thursday, shares of the SPDR Bloomberg Barclays TIPS ETF ( IPE) entered into oversold territory, changing hands as low as $57.11 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 SPDR Bloomberg Barclays TIPS, the RSI reading has hit 29.0 — by comparison, the RSI reading for the S&P 500 is currently 61.9. A bullish investor could look at IPE's 29.0 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), IPE's low point in its 52 week range is $54.36 per share, with $58.93 as the 52 week high point — that compares with a last trade of $57.13. SPDR Bloomberg Barclays TIPS shares are currently trading down about 0.2% on the day.