In trading on Monday, shares of the SPDR Barclays Short Term International Treasury Bond ETF ( BWZ) entered into oversold territory, changing hands as low as $33.438 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 Barclays Short Term International Treasury Bond, the RSI reading has hit 28.6 — by comparison, the RSI reading for the S&P 500 is currently 62.2. A bullish investor could look at BWZ's 28.6 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), BWZ's low point in its 52 week range is $33.438 per share, with $36.83 as the 52 week high point — that compares with a last trade of $33.48. SPDR Barclays Short Term International Treasury Bond shares are currently trading off about 0.6% on the day.