When IBD started tracking these stocks in 2003 they drastically outperformed the SPY. However, since the creation of the actual ETF 4 years ago, it's still underperforming the SPY. Is this a sign that CAN-SLIM is an outdated method to find stocks that can beat the market, because growth is more correctly reflected in a stock's price now? Since its inception, the ETF has been more volatile than the SPY (as expected), but there's been no trade off by out-performing, even with a SPY that's been up on average almost 9% per year during this period. One would expect the growth ETF to be up more when the SPY climbs higher than its historical average. We've seen a lot of methods that have worked in the past start to under-perform this decade, including the stock picks of Warren Buffett. I wonder if this is just the new normal as the explosion of available quantifiable data helps us price stocks more correctly.