Investors should not be overly concerned about the significant concentration of mega-cap tech stocks, according to a top strategist. What Happened: Brian Belski, the chief investment strategist at BMO Capital Markets, believes that the current market risk due to the dominance of mega-cap tech stocks is being overestimated. He stated in a note on Tuesday that the risk is not as severe as some might think, reported Business Insider. The “Magnificent 7” mega-cap tech stocks, including Apple Inc (NASDAQ:AAPL), Microsoft Corp (NASDAQ:MSFT), Alphabet Inc (NASDAQ:GOOGL) (NASDAQ:GOOG), Amazon.com Inc …