When will a correction occur? It looks like the S&P 500 is on the 5th wave of a 5 wave impulse. Next will be a 3 wave correction sequence. When will this happen? The 5th wave is exponential! This means to me that the correction should be strong. Using Fibonacci ratios it looks like the correction should start when the S & P 500 reaches about $3,000. The correction looks be occur around June 2018 but I believe it is more important to look at price than a time frame.