The Dow Jones Industrial Average sank more than 2,000 points on Monday, its worst day since 2008, as fears about the spread of the new coronavirus and an oil price war sent investors scrambling out of stocks.
The Dow dropped 2,013.7 points — 7.79% — as Boeing, Apple, Goldman Sachs and Caterpillar cut the index by at least 100 points each. The Dow ended the day at 23,851.02 and represented its single-worst day since Oct. 15, 2008, when it fell 7.87%.
The S&P 500 plunged 7.6% to 2,746.56 as investors punished financials and energy stocks. Energy names in the S&P 500, including Exxon Mobil, Hess and Marathon Oil, finished the day down more than 20%. Financial stocks ended down more than 10%. The equity benchmark suffered its worst day since Dec. 1 2008.
The Nasdaq Composite fell 7.29% to end the day at 7,950.68.
The massive sell-off triggered a key market circuit breaker minutes after the opening bell. Trading was halted for 15 minutes until reopening at 9:49 a.m. ET. The sharp declines on Monday followed a roller-coaster week that saw the S&P 500 swing up or down more than 2.5% for four days straight.
Investors continued to seek safer assets amid additional fears that the coronavirus will disrupt global supply chains and tip the economy into a recession. The yield on the benchmark 10-year Treasury note dropped below 0.5% for the first time ever, while the 30-year rate breached 1%. At one point early Monday, the 10-year slid to 0.318%.
Much of Monday's anxiety came after Saudi Arabia on Saturday slashed official crude selling prices for April in a sudden U-turn from previous attempts to support the oil market. The move came after OPEC talks collapsed Friday, prompting some strategists to see oil prices crater to $20 per barrel this year.
"Crude has become a bigger problem for markets than the coronavirus," Adam Crisafulli, founder of Vital Knowledge, said Sunday. "It will be virtually impossible for the [S&P 500] to sustainably bounce if Brent continues to crater," he added.
The double punch — with the coronavirus hitting crude demand and failed OPEC talks sparking a supply-side price war — sent crude careening to its worst day since 1991.
Bank stocks, under pressure from declining interest rates, swooned again amid profit fears and concerns that the oil crash could cause spark defaults among debt-heavy energy companies. JPMorgan, Citigroup and Bank of America all plunged more than 13%.
President Donald Trump blamed the media and the oil price war for the stock rout on Monday, arguing in a series of tweets that lower gasoline prices are "good for the consumer."
Investors have already been on edge about the coronavirus outbreak that caused major stock averages to tumble into correction territory. As of Monday, global cases of the infection have climbed to more than 111,000 with at least 3,800 deaths around the world. The situation is also worsening in the U.S. with New York, California and Oregon all declaring states of emergency.
"The idea that lower gasoline prices is going to put more cash in workers' pockets and give consumer spending and the economy a boost doesn't seem to cushion the blow for stock market investors," Chris Rupkey, MUFG Union Bank's chief financial economist, said in a note. "They want out. Big time. The sky is falling. Get out, get out while you can. Wall Street's woes have to eventually hit Main Street's economy hard."
Gold, another safe-haven asset, crossed $1,700 an ounce, hitting its highest level since December 2012. Copper prices hit a more than three-year low of $2.46. Copper is seen as a barometer of broad economic demand given its applications in electrical equipment and manufacturing.
The Federal Reserve announced an emergency rate cut last week to combat the economic impact from the virus, its first such move since the financial crisis. President Donald Trump on Friday signed a sweeping spending bill of an $8.3 billion package to aid medical research.
The New York Fed said Monday it will increase the amount of money it is offering to banks for their short-term funding needs. To make sure the funding, or repo, markets are working properly, the central bank said it will up the amount it offers in overnight operations from $100 billion to $150 billion through Thursday.
Traders expect the central bank to slash rates by three-quarters of a percentage point at its March meeting next week. Chances for a full percentage point cut this month were at 29.2%, according to the CME FedWatch tracker.
"This is just the need for fiscal policy," CNBC's Jim Cramer said on "Squawk on the Street Monday. "Monetary policy is over."
The iShares High Yield Corporate Bond ETF (HYG) fell 4.5%, on concerns that a oil price crash will cause many small energy companies to default, hitting the high-yield credit market that they've become so a large part of.
– CNBC's Eustance Huang, Pippa Stevens, Thomas Franck and Nate Rattner contributed to this report.
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