Stocks slip and bonds fall more sharply after Moody’s downgrades the U.S. government’s credit rating

NEW YORK — U.S. stocks are drifting lower while U.S. bonds and the value of the U.S. dollar are falling more sharply on Monday following the latest reminder that the U.S. government seems to be hurtling toward an unsustainable mountain of debt.

The Standard & Poor’s 500 was 0.4% lower in morning trading after Moody’s Ratings became the last of the three major credit-rating agencies to say the U.S. federal government no longer deserves a top-tier “Aaa” rating.

The Dow Jones industrial average was down 38 points, or 0.1%, as of 10:05 a.m. Eastern time, and the Nasdaq composite was 0.6% lower.

Moody’s pointed to how the U.S. government continues to borrow more and more money to pay for its expenses, with political bickering making it difficult to either rein in Washington’s spending or raise its revenue in order to get its ballooning debt under more control.

It’s a blow because the downgrade essentially means investors globally should not lend money to Washington at such low interest rates. The yield on the 10-year Treasury climbed to 4.52% from 4.43% late Friday. That number shows how much in interest investors are demanding of the U.S. government to lend it money for 10 years.

Perhaps even more joltingly, the yield on a 30-year Treasury leaped back above 5% before receding, up from less than 4% in September. Shorter-term Treasurys, which move more on expectations for what the Federal Reserve will do with overnight interest rates than on what investors are feeling about the U.S. government and economy, moved by much less.

And if Washington has to pay more in interest to borrow cash to pay its bills, that could cause interest rates to rise for U.S. households and businesses too, affecting rates for mortgages, auto loans and credit cards. That in turn could slow the economy.

Nothing Moody’s said is new, of course, and critics have been railing against Washington’s inability to control its debt for many years. Standard & Poor’s lowered its rating on the U.S. government in 2011.

That means investors have likely already accounted for most of the well-known issues, according to Brian Rehling, head of global fixed income strategy and other analysts at Wells Fargo Investment Institute. They’re expecting “limited additional market impact” following the initial reactions.

But the downgrade does comes ahead of a key period for Washington, where it’s set to debate potential cuts in taxes that could suck away more revenue, as well as the nation’s limit on how much it can borrow.

The downgrade also adds to a long list of concerns that have already weighed on the market. Chief among them is President Trump’s trade war, which has already forced investors globally to question whether the U.S. bond market and the U.S. dollar still deserve their reputations as some of the safest places to park cash during a crisis.

The U.S. economy seems to be holding up OK so far despite the pressures of tariffs, but big companies have been warning recently that they’re uncertain about the future. Walmart, for example, has said it will likely have to raise prices because of tariffs. That caused Trump over the weekend to criticize Walmart and demand it and China “eat the tariffs.”

Walmart stock fell 1% Monday.

Other big retailers are on the schedule to report their latest quarterly results this upcoming week, including Target, Home Depot, Lowe’s and TJX Cos.

In stock markets abroad, indexes were mostly lower across Europe and Asia.

Stocks were close to flat in both Shanghai and Hong Kong after the Chinese government said retail sales rose less in April than expected. Growth in industrial output slowed to 6.1% year-on-year from 7.7% in March.

In the foreign currency markets, the value of the U.S. dollar fell against everything from the euro to the Australian dollar.

Choe writes for the Associated Press.