The Swenlin Trading Oscillator (STO) is an overbought/oversold indicator that can assist in identifying short-term tops and bottoms. There are two versions, one using advances and declines (STO-B), and one using advancing and declining volume (STO-V). DecisionPoint analysis considers these to be short-term indicators. Right now they are quickly reaching oversold levels not seen since August when we saw the rally begin a steady rise.