7 Growth Stocks to Buy for Big Gains in Q4 For short-to-medium-term investors, the markets are at an interesting point. Historically, September has been the worst-performing month for the SP 500 in terms of average returns. However, November, December and January are among the best months. Therefore, now might be a good time for investors to begin looking for undervalued growth stocks to buy. A turbulent September could present an opportunity to buy such names at a discount and then reap the benefits in the fourth quarter. Of course, given the headwinds investors face, most notably high inflation, interest rate increases and a potential recession, it’s possible it may take longer to see bullish returns. Yet, these market conditions also give longer-term investors a chance to buy quality growth stocks for the next five years. Therefore, my list of growth stocks to buy in September focuses on those that could be traded in the near term for Q4 gains and should also be considered for a long-term portfolio. CPNG Coupang $18.32 RIOT Riot Blockchain $7.38 LI Li Auto $25.81 DKNG DraftKings $19.22 SLDP Solid Power $6.26 TENB Tenable $39.15 RIG Transocean $3.23 Coupang (CPNG) Source: Ki young | Shutterstock.com First on my list of top growth stocks to buy is South Korean e-commerce company Coupang (NYSE: CPNG ).