We're seeing the exact same setup in shares of Dollar Tree ( DLTR) right now. Like Sands, Dollar Tree has nearly doubled the S&P 500's rally since the calendar flipped over to 2013 -- and now it's pointing to a move to even higher ground thanks to an ascending triangle pattern. >>4 Turnaround Stocks With Major Upside For DLTR, the resistance level to watch is $48.50. Once shares push up through that resistance level, traders have a buy signal in this discount retail stock. With shares edging extremely close to that $48.50 breakout level today, that buy signal could come very quickly. If you're thinking about building a position in this stock, I'd recommend keeping a close eye on DLTR in today's session. Momentum adds some extra confirmation to the price action in DLTR here: 14-day RSI has maintained a stable uptrend since all the way back in November. Since momentum is a leading indicator of price, that bodes very well for DLTR this week. Still, it's crucial to actually wait for $48.50 to get taken out before you put your money on the line. Until then, this isn't a high-probability trade.