The outside of the New York Stock Exchange. Photo: Spencer Platt/Getty Images

The stock market closed up more than 3% on Monday — the biggest rally in over a month — amid news that Moderna's phase one coronavirus vaccine trial showed a positive first step.

Why it matters: The stock market has rebounded in recent weeks in the face of the coronavirus crisis, which has pushed the U.S. economy into the worst downturn since the Great Depression. Long-time investors have warned about stocks' high valuations based on optimism about a vaccine or cure, as well as the economy's ability to fully rebound.

The big picture: Congress passed coronavirus relief to support workers and small businesses during the economic lockdown. Another stimulus package passed the House, but faces opposition in the Senate.

  • The Federal Reserve has also taken unprecedented steps to launch lending facilities to shore up the economy — and more support could be coming.
  • "There's really no limit to what we can do with these lending programs that we have," Fed Chairman Jerome Powell told 60 Minutes last night, an interview that some traders said helped optimism on Wall Street.

By the numbers:

  • The S&P 500 rose 3.1%.
  • The Dow Jones Industrial Average jumped 911 points (or 3.8%).
  • The Nasdaq Composite climbed 2.4%.

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Updated 2 hours ago - Health

U.S. coronavirus updates

Data: The COVID Tracking Project; Note: Does not include probable deaths from New York City; Map: Andrew Witherspoon/Axios

The number of COVID-19 cases recorded in the U.S. was nearing 5 million on Sunday morning, per Johns Hopkins data.

The big picture: Presumptive Democratic presidential nominee Joe Biden noted in an emailed statement that 5 million "is more than the entire population of Alabama — or of more than half the states in our union, for that matter," as he blamed President Trump for his handling of the pandemic.

White House, Democrats no closer to reaching coronavirus stimulus deal

Treasury Secretary Steve Mnuchin and House Speaker Nancy Pelosi took the standoff on the next coronavirus stimulus package to ABC's "This Week" on Sunday.

Why it matters: Enhanced unemployment insurance expired for tens of millions of Americans on July 31, while those in talks to secure the next coronavirus stimulus package have made it clear that a deal is a long way off.

Updated 2 hours ago - Politics & Policy

Coronavirus dashboard

Illustration: Sarah Grillo/Axios

  1. Global: Total confirmed cases as of 3 a.m. ET: 19,648,084 — Total deaths: 727,024 — Total recoveries — 11,941,723Map.
  2. U.S.: Total confirmed cases as of 3 a.m. ET: 4,998,105 — Total deaths: 162,425 — Total recoveries: 1,643,118 — Total tests: 61,080,587Map.
  3. Politics: Trump signs 4 executive actions on coronavirus aid — Democrats, and some Republicans, criticize the move
  4. Public health: Fauci says chances are "not great" that COVID-19 vaccine will be 98% effective — 1 in 3 Americans would decline COVID-19 vaccine.
  5. Science: Indoor air is the next coronavirus frontline.
  6. Schools: How back-to-school is playing out in the South as coronavirus rages on — Princeton, Johns Hopkins, Howard to hold fall classes online.