With the S&P 500 index up roughly 6% year to date, stocks have gotten off to a strong start in 2024. Investors are being rewarded for putting their money behind top growth stocks, and it looks like the trend could continue in the remainder of this year and beyond.With that in mind, read on to see why two Motley Fool contributors believe that you should be loading up on Nvidia (NVDA 1.87%) and Netflix (NFLX 1.08%) this March.Nvidia's incredible run probably isn't overKeith Noonan (Nvidia): One of the market' ...