J.C. Amberlyn / AP

A fund associated with the activist hedge fund Jana Partners has bought an undisclosed stake in Zimmer Biomet, according to a federal merger filing. That occurred just one day after Zimmer, a medical device conglomerate, nudged out CEO David Dvorak due to another dismal quarter by Wall Street's standards.

Why it matters: Jana is known to shake things up, and Zimmer has already started down that path. Amazon acquired Whole Foods after Jana bought its stake, and the hedge fund was around when Time changed top leadership. Jana is also somewhat familiar with medical devices, owning part of NuVasive. Jana and Zimmer did not immediately respond to questions.

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Updated 58 mins ago - Politics & Policy

Coronavirus dashboard

Illustration: Sarah Grillo/Axios

  1. Global: Total confirmed cases as of 9:30 p.m. ET: 33,867,247 — Total deaths: 1,012,341 — Total recoveries: 23,537,059Map.
  2. U.S.: Total confirmed cases as of 8 p.m. ET: 7,229,319 — Total deaths: 206,887 — Total recoveries: 2,840,688 — Total tests: 103,939,667Map.
  3. Education: School-aged children now make up 10% of all U.S COVID-19 cases.
  4. Health: The coronavirus' alarming impact on the body.
  5. Business: Real-time data show economy's rebound slowing but still going.
  6. Sports: Steelers-Titans NFL game delayed after coronavirus outbreak.
Ina Fried, author of Login
1 hour ago - Technology

Facebook removes Trump ads tying refugees to COVID-19

Photo Illustration: Aïda Amer/Axios. Photo: Saul Loeb/AFP via Getty Images

Facebook said Wednesday that it was removing a series of ads from President Trump's campaign that linked American acceptance of refugees with increased coronavirus risk, a connection Facebook says is without merit.

Why it matters: The ads were pulled after they received thousands of impressions and are a sign that the Trump campaign continues to test the limits of social media rules on false information.

Over 73 million people watched the first debate on TV

Data: Nielsen; Chart: Andrew Witherspoon/Axios

More than 73.1 million people watched the first presidential debate on television on Tuesday night, according to Nielsen ratings.

Why it matters: While that's a sizable audience for any American TV program, it's down more than 13% from the record number of TV viewers who tuned in for the first debate of the 2016 election. The chaotic nature of the debate and the overall uncertainty around this year's election may have pushed some viewers away.