This post was updated May 1 at 8:02 p.m. Eastern time.

The major stock indexes declined on Friday after major tech companies reported how they’ve been affected by the COVID-19 pandemic.

The Dow Jones Industrial Average declined by more than 622 points, the S&P 500 by more than 81 points and the Nasdaq composite index by more than 284 points.

Apple failed to provide financial guidance to investors for the first time since 2003. “As COVID-19 started impacting China, iPhone supply was temporarily affected, as well as demand for our products within China. This caused us to withdraw our revenue guidance in February,” Apple CEO Tim Cook explained during a conference call on Thursday.

Amazon also revealed how the pandemic has been affecting the company. While the tech giant’s revenue grew 26% during the first three months of the year, CEO Jeff Bezos said the company will spend the entirety of its $4 billion profit on COVID-related expenses between April and June.

“If you’re a shareowner in Amazon, you may want to take a seat, because we’re not thinking small,” Bezos said.

Although some of this would go toward paying for personal protective equipment for Amazon’s warehouse workforce, Amazon shares declined more than 7% after the news.

The market has been seesawing this week amid the release of earnings reports, unemployment data and consumer confidence numbers, along with news from the Federal Reserve and developments surrounding a drug that could treat COVID-19.

Stocks rose on Wednesday after a study on an experimental drug from Gilead Sciences showed that it reduced the time it takes patients to recover by 31%. The Federal Reserve also announced that it plans to keep its interest rate target between 0% and 0.25%, a range the central bank set in March. “We can do what we can do, and we will do it to the absolute limit of those powers,” Fed Chair Jerome Powell said.

There are now more than 3.1 million confirmed cases of COVID-19 worldwide and more than 224,300 people have died, according to the World Health Organization. In the United States and its territories, the number of confirmed cases has exceeded 1.1 million, while the death toll has risen to more than 64,800.

Here’s a look at how the major stock indexes have been reacting to the news since the beginning of the year.

COVID-19 Economy FAQs What’s going on with extra COVID-19 unemployment benefits? It’s been weeks since President Donald Trump signed an executive memorandum that was supposed to get the federal government back into the business of topping up unemployment benefits, to $400 a week. Few states, however, are currently paying even part of the benefit that the president promised. And, it looks like, in most states, the maximum additional benefit unemployment recipients will be able to get is $300. What’s the latest on evictions? For millions of Americans, things are looking grim. Unemployment is high, and pandemic eviction moratoriums have expired in states across the country. And as many people already know, eviction is something that can haunt a person’s life for years. For instance, getting evicted can make it hard to rent again. And that can lead to spiraling poverty. Which retailers are requiring that people wear masks when shopping? And how are they enforcing those rules? Walmart, Target, Lowe’s, CVS, Home Depot, Costco — they all have policies that say shoppers are required to wear a mask. When an employee confronts a customer who refuses, the interaction can spin out of control, so many of these retailers are telling their workers to not enforce these mandates. But, just having them will actually get more people to wear masks. You can find answers to more questions on unemployment benefits and COVID-19 here. Read More Collapse