ByBrandon Kochkodin,

Forbes Staff.

Beating the market is hard. But if you’d followed the missives of President Trump and his team this year, you might have found a cheat code.

On Monday, GameStop ($3.8 billion in revenue) shares opened trading more than 2% from their prior close, more than double the S&P 500’s early gain. The move came after the White House on Sunday shared a GameStop social media post celebrating the “Halo” series coming to PlayStation for the first time. The official account added a photo of Trump as the game’s hero and wrote, “Power to the Players.” It wasn’t a stock tip, but traders seemed to take it as one.

The same morning, Argentina’s markets took off following the results of the country’s midterm elections in which President Javier Milei, a candidate heavily endorsed by Trump, and his Libertarian party expanded its control of Congress. The Global X MSCI Argentina ETF, with about $620 million in assets, jumped 18% in early trading. Throughout October the U.S. Treasury had spent more than $1 billion buying pesos to sure up the South American country’s notoriously volatile currency.