Goldman Sachs said Nvidia has another trick up its sleeve to drive its stock price higher going forward: a massive stock buyback program.

U.S. stocks climbed after market superstar Nvidia and another round of companies said they’re making even fatter profits than expected

Nvidia, which has nearly tripled in value this year, accounted for about 20% of the S&P 500's returns over the past year, according to BofA Global Research. The market's reaction to its results is expected to be crucial in determining Wall Street's trajectory heading into the year-end.