The S&P 500 has been rallying strong over the past couple weeks. As you see it might come to a stop. The RSI is high indicating that the the S&P 500 has been overbought. Also the signal line in the MACD chart is crossing below the MACD line thus signaling a short. The final indicator that is might trigger this fall and potential profits is the penetration of a inclining support level that has been penetrated.