The S&P 500 hit a new high again on Friday (23rd July) despite some bearish momentum earlier in that week. Throughout the past few months, S&P 500 has been constantly making new highs. In fact, the index has already made a gain of ~17% (as of 23rd July) YTD. With four more months to go for the remainder of this year, there is probably a good chance that this gain will cross into the twenties region. (Source: Portfolio Visualizer) If we were to look at the annual gains of the index across the past few years, such a gain YTD is likely to surpass what we already have in 2020 though it's probably unlikely to surpass what we have in 2019. If this momentum is to continue, these past 3 years (inclusive of 2021) are likely to be some of the best 3 years of index investing with an annual return way above 15%....