In the stock market right now, small isn’t beautiful. While blue chips are riding a bull market now in its fifth year, shares of small companies have struggled amid concerns over lofty prices and an early-year scare over U.S. growth. Even though small stocks look cheaper after months of underperformance and the U.S. economy is showing strength, many investors aren’t ready to pile back in. Given that periods of market turmoil tend to buffet small stocks more than their larger counterparts, many investors in small companies are fearful as the Federal Reserve moves toward raising interest rates. Even investors hopeful for small stocks are proceeding with caution.