A 40-year stock trader and mathematician who had a 366% return shares her 4 biggest tips, plus the winning strategy she learned from her worst mistake

• Sunny Harris began trading on her own after a fund manager lost a big chunk of her investment. 
• She has also developed her own trading indicator that uses dynamic moving averages. 
• She recommends testing your strategy and rules at least 100 times before using them to make trades.

Before Sunny Harris became a stock trader, she was a computer programmer with a master’s degree in mathematics.