The short-seller added he also bought some call options for insurance in case he is incorrect on his bearish view.
Nvidia will report fiscal second-quarter results after the market close.
Nvidia did not immediately respond to a request for comment.
The company is one of the best performing stocks in the market. Its shares are up more than 50 percent year to date versus the S&P 500’s 9 percent return.
Short-seller Andrew Left targets trader favorite Nvidia before earnings