Stocks gave up early gains and turned lower on Wall Street after an unexpectedly strong report on the job market raised concerns that the Federal Reserve will need to keep the pressure on inflation with aggressive interest rate increases.

The S&P 500 fell 0.5% as of 12:50 p.m. Eastern. It had been up as much as 1% shortly after trading opened. The Dow Jones Industrial Average fell 129 points, or 0.4%, to 32,604 and the Nasdaq fell 0.8%.

Big technology stocks were the biggest weights on the market. The companies, with their big valuations, have more heft in pushing the broader market up or down. Also, rising interest rates tend to make the sector look less attractive because of its those high valuations. Apple fell 2.4%.

Small company stocks held up better than the rest of the market. The Russell 2000 rose 0.5%.

The Labor Department reported that U.S. job openings rose unexpectedly in September, suggesting that the labor market is not cooling as fast as the Fed hoped for as it tries to slow economic growth.

The latest jobs data, which comes ahead of a broader employment report on Friday, is disappointing for investors who are looking for signs that inflation is easing and that the Fed might consider tempering its interest rate increases.

That really fuels the expectation that the Fed has to do more hiking, said Jason Draho, head of asset allocation for the Americas at UBS Global Wealth Management. The labor market is still too tight for the Fed.

Wall Street is concerned that the central bank is being too aggressive in slowing the economy, running the risk that it could bring on a recession.

Long-term Treasury yields turned higher after the report in job openings came out and rose back near multiyear highs. Those high rates have helped push mortgage rates above 7% this year.

The yield on the 10-year Treasury rose to 4.05% from 3.93% earlier in the morning.

The yield on the two-year Treasury, which tends to reflect market expectations of future moves by the Federal Reserve, rose to 4.52% from 4.40%.

The issue for investors is figuring out how long the hiking cycle will last, Draho said. (Fed Chair Jerome) Powell will want to leave all options on the table.

Several big companies made solid gains following encouraging earnings reports and forecasts.

Pfizer rose 2.9% after reporting strong results and raising its profit forecast for the year. Uber surged 12.6% after giving investors a strong forecast for future bookings. Rival Lyft rose 4.3%.

Earnings remain a big focus for investors this week. CVS reports its results on Wednesday and Starbucks reports earnings on Thursday.

Outside of earnings, Abiomed surged 50% after health care giant Johnson & Johnson said it will pay $16.6 billion for the heart pump maker. Johnson & Johnson fell 1%.

The Fed is beginning a two-day policy meeting thats expected to result in its sixth interest rate increase of the year as the central bank fights the worst inflation in four decades. The widespread expectation is for the Fed to push through another increase thats triple the usual size, or three-quarters of a percentage point.

For its final policy meeting of the year, in December, opinions are currently split among investors as to whether the Fed will make another three-quarters point move or dial back to a half-point increase.

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AP Business writers Joe McDonald, Elaine Kurtenbach and Matt Ott contributed to this report.

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