Dear Reader, Do you know the "green days" for your favorite stocks this year? For example, if you're planning to buy Advanced Micro Devices (AMD) this year, do it on November 16. Because 86% of the time, it's gone up on that date for the past 15 years! This new strategy comes from Keith Kaplan, CEO of our corporate affiliate TradeSmith, whose firm helps his customers track $30 billion. Until Wednesday , he's sharing a system for finding "green days" for 5,000 stocks. He's calling it their biggest breakthrough in 20 years – and it's easy to see why... Consider March 14, for example. If you do nothing else that day, buy Lululemon (LULU). 87% of the time, it's gone up on that date for more than a decade. Or how about Broadcom (AVGO)? Its green day is May 23... with a 100% historical success rate. All of these green days have produced winning trades at a rate fast enough to potentially double your portfolio over the next 12 months. Until Wednesday, click here to look up the "green day" for 5,000 stocks. Good investing, Brett Eversole | 