More on dividend growth investing -> Join our market newsletter! The last time the S&P 500 dividend yield was sitting at 1.17% was in February of 2001. Many investors remember the stretched valuations 23 years ago, and even more so, how the following year proved to correct that exuberance. While stock prices are currently hovering around all-time highs, us dividend growth investors targeting a yield of 2.5-3% may find challenges in this environment.Given this, and the uncer...