The New York Stock Exchange had its best day in 10 years Wednesday, and the Dow Jones Industrial Average jumped by more than 1,000 points, its largest single-day gain ever. Gains in technology, retail, healthcare, and internet stocks drove the rally. This month brought extreme volatility to markets, which overall are having their worst December since 1931. Though trading volume was light Wednesday, the rebound helped erase a Christmas Eve slump that plunged stocks close to bear market territory.

U.S. stocks are tentatively recovering from a dip last week. The markets rocketed to their biggest gain in six months Tuesday following a six-day losing streak but seesawed throughout the day Wednesday. Good news on the U.S. economy fueled Tuesday’s rebound. The U.S. Department of Labor said employers posted the most jobs in two decades in August, while hiring continued to increase. Unemployment continued a steady drop. Strong earnings from healthcare and tech companies also helped.

World stock markets perked up a little Friday morning after heavy losses this week. Major U.S. stock indexes were up more than 1 percent but were still on track for their biggest one-week loss since late March. Fears over rising inflation and especially interest rates appeared to be the main drivers of the market plunge. Valeur Capital portfolio manager Nicola Marinelli said the heated trade war between the United States and China might also be contributing. “Some sectors are starting to suffer in their balance sheet,” Marinelli said.

Unemployment rates in the United States are the lowest they’ve been in decades, the Labor Department reported Friday. Though companies added fewer jobs than expected in September—likely because Hurricane Florence dampened business activity in the South—the month’s unemployment rate fell to 3.7 percent, the lowest since 1969.

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.