Tyrion Lannister has begun a strategy of investing in stocks that analysts have forecasted to have high earnings growth during the next five years.Tyrion spends a lot of time listening to CNBC, reading the Wall Street Journal, reading through analyst reports, and using other sources like the Value Line Investment Survey to further study these firms that are expected to have the highest future growth in earnings.What kind of portfolio excess returns or alphas should Tyrion realistically expect to earn over time with this public information and why?