Trader Brian Jones on Twitter: "At the core of the System is the 50 sma on a 10 day chart using 30 minute intervals. 1) When the S&P breaks over the 50 sma. That's a Bullish signal. 2) When the S&P is Bullish. The 50 sma acts as support. So buying drops at support works until it doesn't. https://t.co/afZHW5xv6y" / Twitter

At the core of the System is the 50 sma on a 10 day chart using 30 minute intervals. 1) When the S&P breaks over the 50 sma. That's a Bullish signal. 2) When the S&P is Bullish. The 50 sma acts as support. So buying drops at support works until it doesn't.