Could Roku Stock's Post-Earnings Sell-Off Be a Huge Buying Opportunity for Investors?

The streaming video powerhouse's guidance appears to have left the market cold.When a stock falls after a quarterly report, it can sometimes be a great buying opportunity. Those initial sell-offs can turn into overreactions, so if the company's fundamentals remain strong, buying on the dip can lead to better returns later.Streaming company Roku (ROKU 2.48%) posted its latest results last week, and the stock has fallen sharply since then. Prior to the third-quarter earnings report, it was hovering around $80 ...