U.S. stocks fell sharply Monday as a troubling increase in coronavirus counts put investors in a selling mood. The skid came as doubts mount on Wall Street that Washington will come through with more stimulus for the economy before Election Day.

The S&P 500 slid 1.9%, its biggest single-day decline in more than a month. The Dow Jones Industrial Average dropped 650 points after having been down more than 960 during the heaviest selling. Technology companies drove much of the broad sell-off, though losses in communications services, financial and industrial stocks helped weigh down the market. Energy stocks also dropped in tandem with crude oil prices.

Stocks also fell across much of Europe and Asia. In another sign of caution, Treasury yields pulled back after touching their highest level since June last week.

The S&P 500 fell 64.42 points to 3,400.97. The Dow slumped 650.19 points, or 2.3%, to 27,685.38. The Nasdaq composite lost 189.34 points, or 1.6%, to 11,358.94. Smaller company stocks also took heavy losses, knocking the Russell 2000 index down 35.29 points, or 2.2%, to 1,605.21.

Coronavirus counts are spiking in much of the United States and Europe, raising concerns about more damage to the still-weakened economy. The U.S. came very close to setting back-to-back record daily infection rates on Friday and Saturday. In Europe, Spain’s government declared a national state of emergency on Sunday that includes an overnight curfew, while Italy ordered restaurants and bars to close each day by 6 p.m. and shut down gyms, pools and movie theaters.

Hopes are fading, meanwhile, that Washington will be able to provide more support for the economy anytime soon. House Speaker Nancy Pelosi and Treasury Secretary Steven Mnuchin weren’t able to reach an agreement in a phone call Monday, according to a Pelosi aide. The two have been discussing a potential deal to send cash to most Americans, restart supplemental benefits for laid-off workers and provide aid to schools, among other things.

Deep partisan difference remains on Capitol Hill, and time is running out for anything to happen before Election Day on Nov. 3. Any compromise reached between House Democrats and the White House would also likely face stiff resistance from Republicans in control of the Senate. Another concern is that possible delays in sorting out the results of next week’s elections could end up pushing a stimulus deal back indefinitely.

Worries about the diminishing prospect for more stimulus in the short term helped drive the S&P 500 to a 0.5% drop last week, its first weekly loss in the last four.

The U.S. economy has recovered a bit since the stay-at-home restrictions that swept the country early this year eased, and economists expect a report on Thursday to show it grew at an annual rate of 30.2% during the summer quarter after shrinking 31.4% during the second quarter.

But momentum has slowed recently after a prior round of supplemental unemployment benefits and other stimulus that Congress approved earlier this year expired.

Stocks of companies that need the virus to abate and the economy to return to normal logged some of the sharpest losses Monday.

Norwegian Cruise Line Holdings fell 8.4%, Marathon Oil dropped 7% and United Airlines lost 7%.

Energy stocks dropped to the largest loss among the 11 sectors that make up the S&P 500, falling in concert with oil prices. All the stocks in the index closed lower.

Among the market’s few gainers were companies that can succeed even in a stay-at-home economy. Zoom Video Communications gained 1.2%.

Amazon fared much better than the broader market, recovering from an early loss to close 0.1% higher, while Apple lost an early gain and ended flat. Expectations are high for them, and analysts say they’ll report strong results for their latest quarter this week. They and other Big Tech stocks have soared through the pandemic on hopes their growth will only continue as work-from-home and other trends that benefit them accelerate.

European and Asian markets closed lower. The yield on the 10-year Treasury fell to 0.80% from 0.85% late Friday.

Wheat for Dec. lost 12.75 cents at 6.20 a bushel; Dec. corn was off 1.50 cents at 4.1775 a bushel, Dec. oats was up 3 cents at $3.0650 a bushel; while Nov. soybeans rose 4 cents at $10.8775 a bushel.

Beef and pork were higher on the Chicago Mercantile Exchange. Oct. live cattle rose .62 cent at $1.0397 a pound; Oct. feeder cattle was up .18 cent at $1.3370 a pound; while Dec. lean hogs gained .73 cent at $.6775 a pound.