Up first is Retail Properties of America ( RPAI), a mid-cap REIT that owns and operates retail shopping centers in 35 states. RPAI has been on a tear year-to-date, climbing more than 24% while the S&P has moved 9% higher over the same period. Sure, the S&P's gains are certainly impressive, but RPAI has been on fire. >>5 Rocket Stocks Getting Ready for Blastoff One of the most significant things about RPAI's recent price action is that it's gone parabolic in the last few months. Fast parabolic price moves aren't sustainable for long, and that's exactly what we're seeing in Retail Properties of America right now. Shares have been consolidating sideways since the start of March, but that's not necessarily a bad thing. RPAI has been moving sideways in a pennant pattern, a short-term trading pattern that generally signals a continuation of the prior trend. And in RPAI's case, that prior trend was very bullish. In short, the pennant is a chance for this stock to bleed off some overbought momentum after such a swift move upwards. The buy signal comes when shares push up through the top of the pennant. We could see that happen this week.