But it's not just happenstance that professionally managed funds have underperformed the S&P 500 recently. There are systemic reasons why the vast majority of professionally managed funds will underperform the index over time. That's evidenced by the 20-year track record of professionally managed funds: 91% underperformed over the last two decades. And I'd bet the next 20 years will look pretty similar.You might have put together by now that the ETF that can consistently outperform most professionally manag ...