Tech stocks also make up much of the S & P 500, with the information technology sector forming 25.6% of the index, according to FactSet.
"The leaders this year are definitely Apple and Microsoft ," Louis Navellier, chairman at Navellier & Associates, told CNBC's " Street Signs Asia " on Wednesday.
"They are now the highest weightings ever in the S & P 500."
"It dominates graphics chips, it dominates AI chips," he said, adding that Nvidia makes the "best" self-driving systems.
Other stock picks Apart from Nvidia, Navellier had three other stock picks with high expected earnings growth.