Investing.com - The easy money days of the stock market are over and it's now a stock picker's market.That's the view of Morgan Stanley (NYSE:MS), which has identified stocks the firm recommends holding for three years. Its "30 for 2021" list contains companies that have a sustainable competitive advantage, pricing power, cost efficiency and growth.The list contains several investor favorites, such as Amazon (NASDAQ:AMZN), Alphabet (NASDAQ:GOOGL) and Microsoft (NASDAQ:MSFT).Many on the list, however, are less familiar. Here's ten.(insert graphic: First Republic Bank, Gartner, Intuitive Surgical (NASDAQ:ISRG), IQVIA, Marsh & McLennan )Two are financials--First Republic and Marsh & McLennan. Intuitive and IQVIA combine tech and health care. Gartner is a research firm(insert graphic 2: NextEra Energy (NYSE:NEE), Prologis, SBA Communications (NASDAQ:SBAC), Sherwin Williams, Thermo Fischer Scientific)NextEra is a clean energy company. Prologis is a real estate one. SBA offers wireless communications. Sherwin Williams is a paint company. Thermo Fischer makes biotech instruments.