A couple of things I take exception with in this article. it would be very difficult to double a portfolio off the March lows. the S & P low for 2020 was 2447 on 3/18. So a double as the author suggests would be nearly 5000, today it stand at 3691. hardly a double. Secondly according to Warren Buffet buying and holding the S & P is the best way to make money in the stock market not bouncing in and out as the author and his uncle suggest. Staying the course is through thick an thin.