Tesla CEO Elon Musk said Tuesday he wants to buy up company stock and remove it from public trading. Musk got the ball rolling after the stock market had been open more than three hours with a tweet announcing he had secured funding to buy all of Tesla’s stock at $420 per share. At that price, the company would cost nearly $72 billion, though Musk owns roughly 20 percent of the Palo Alto, Calif., electric car maker. The confusion caused by Musk’s announcement prompted regulators of the Nasdaq stock market to temporarily suspend trading in Tesla’s stock.

Apple became the world’s first publicly traded company to be valued at $1 trillion on Thursday. The company’s shares rose 2.7 percent to an all-time high of $207.05 around midday, up 22 percent so far this year. The milestone comes 42 years after Steve Jobs and Steve Wozniak co-founded the stylish, cutting-edge tech company, and just two decades after a 1997 identity crisis, when the company stock price was less than $1. This week’s jump came after Apple reported strong results and higher prices for iPhones on Tuesday.

The S&P Dow Jones Indices said Tuesday it will drop General Electric from the Dow Jones industrial average next week. Boston-based GE was an original member of the 30-company blue chip index in 1896 and has been a continuous member for more than 100 years. Drugstore chain Walgreens Boots Alliance will take GE’s slot in the list of the most stable publicly traded U.S. companies. Shares of GE have been in gradual decline since 2000 but especially shaky in recent years. Shares closed on Tuesday at $12.95, a 60 percent drop from a recent peak in July 2016.

On Tuesday, the Trump administration released a long list of Chinese imports that could soon face new tariffs including semiconductors, car and aircraft parts, and machine tools, a total of $12.5 billion in new tariffs on about $50 billion in goods annually. The threat of a trade war between the world’s two largest economies is roiling the stock market, upsetting the U.S. business community, and finding critics among conservatives.

The stock market rallied late Friday to trim the week’s losses but still ended down about 5 percent since Monday. The Dow Jones industrial average closed at 24,190, a gain of 1.3 percent over Thursday, and the S&P 500 gained 38 points. Just two weeks ago, the Dow hit a record high of 26,616. Many analysts say the drop over the past week is a normal market “correction,” though they didn’t anticipate it would happen so suddenly. “We may have seen the worst, but it’s too early to say for sure,” said Shane Oliver of AMP Capital.

The Dow Jones industrial average plunged more than 1,000 points Thursday, triggering an official “correction.” Both the Dow and the Standard & Poor’s 500 dropped 10 percent from their all-time highs, set Jan. 26. The markets have logged losses during five of the last six trading days. Analysts blamed the falling stock prices on fears the Federal Reserve would begin to raise interest rates more quickly amid positive economic indicators, including the latest wage report from the Labor Department.

Stocks opened higher on Wall Street Wednesday morning following two days of tumult. After the Dow Jones industrial average took a 1,175-point nosedive on Monday, stocks plunged again Tuesday morning, but the market pulled off a late-afternoon rally, taking back some of the lost territory. Consumer-focused companies like Disney and Amazon made the most gains. Global trading also was calmer Wednesday, with markets in Germany, Britain, France, and Japan up slightly. But investors are still nervous: The VIX index, Wall Street’s “fear gauge” is currently double where it was two weeks ago.