Should Dividend Investors Be Concerned That 23.9% of the Schwab U.S. Dividend Equity ETF (SCHD) Is Now Invested in Energy Stocks?

With over $85 billion in net assets and a 3.3% yield, the Schwab U.S. Dividend Equity ETF (SCHD 0.59%) is one of the most popular high-yield dividend exchange-traded funds (ETFs). It's up 10.8% year to date, compared to a 5% decline in the S&P 500 (^GSPC 1.67%).The ETF's exposure to the scorching hot energy sector is contributing to its outperformance. But energy stocks have run up so much that they now make up 23.9% of the ETF.Here's why that concentration can be a red flag for risk-averse investors who pr ...