MOSCOW, 18 Sep. Most retail investors lose out to professional managers. The average annual return of an independent investor over the past 20 years amounted to 2.9% versus 7.5% for the US stock market and 5% for bonds, which is lower than any individual asset class, Andrey Rusetsky, asset manager of BCS World of Investments, told Prime. The reason for this result is the lack of time for portfolio management and analysis of the choice of securities. The expert notes that a large amount of cache reduces the portfolio's profitability. Professionals prefer to fully load it with assets. Another mistake of novice investors is waiting for the growth of unprofitable assets instead of getting rid of them. “Do not be afraid to close unprofitable positions — look for new growth points, the markets are growing and opportunities are huge,” Rusetsky noted. The expert advises to form a portfolio of 15 -20 positions. In addition, you should not trust investment advice from anonymous telegram channels. It is better to professionally navigate the market, but this requires at least 10 thousand hours of practice or 5 years of work, concluded Rusetsky. The expert explained when you shouldn't trust the forecasts of stock analysts