Uncle Sam Buys Stocks: What Investors Should Know

If the U.S. government takes stake in a company, that doesn't necessarily mean investors should follow suit. It might suggest they need to do more homework than usual before pressing "Buy."

Historically when D.C. invests, the money goes to companies that need a helping hand, though that's not so much the case with some of the government's recent moves. Essentially, Washington props up ailing firms, taking on some associated risk. That might be OK for the government, because it can print more money if it needs to. Investors can't.

Also, direct government investment in companies may create uncertainty for companies getting the funds in terms of how much influence the government might have on their business decisions. Ultimately, that could have an impact on share price.

In August, the Trump administration said the government took a 10% stake in shares of chipmaker Intel (INTC) when they traded at just above $20. The deal converted more than $11 billion in federal grants and other funding into a 9.9% stake in the company. By late September, the government had made $4.4 billion on its trade, according to Barron's, with the share price above $30.

The Intel news came soon after Trump said the government would collect 15% of Nvidia's (NVDA) and Advanced Micro Devices' (AMD) chip revenue from China. The administration also loosened export controls on chip sales to the country. Weeks later, China banned companies there from buying Nvidia's chips, but that's a fluid situation still playing out.

Also, this year the Pentagon bought a $400 million equity stake in rare-earth miner MP Materials (MP), leading to a quick doubling in the share price. And it bought a "golden share" in U.S. Steel (X) as part of a deal allowing Japan's Nippon Steel to buy the company. A golden share means the company must consult the government on big strategic decisions like closing a plant, reducing jobs, or making a big investment. This essentially allows the government to veto decisions it doesn't like.

Commerce Secretary Howard Lutnick said similar deals might be coming, specifically citing defense companies, which may raise more eyebrows.

The government seeks revenue partly to address the budget deficit, and in the case of Nvidia and AMD, to keep U.S. chip companies competitive in the key Chinese market. The U.S. government's investment in MP is supposed to give the United States more leverage in the rare-earth business, which China has dominated with 85% of the world's production, according to Barron's.