Illustration: Rebecca Zisser/Axios

CNBC's Carl Quintanilla passes along a Morgan Stanley report that has quantified the amount that stocks fall after a data breach is made public.

Driving the news: Marriott was above average. It fell 5.6% on Friday, after a data breach that could have affected as many as 500 million customers. That's more than the 4% one-day decline Morgan Stanley has calculated after looking at Target, Home Depot, Yahoo, Heartland Payment and Anthem.

  • Expect Marriott to pay a hefty fine under Europe's GDPR rules.
  • Don't expect a bounce on Monday. After a week, those companies were down even further: 6%, on average, from their pre-disclosure level.

One company that saw no decline in its share price this week: The U.S. Postal Service, which exposed the data of 60 million customers. That's one advantage of being state-owned, I guess.

Go deeper: Behind the Marriott breach's "500 million affected" tally

Go deeper

Updated 10 mins ago - Politics & Policy

Coronavirus dashboard

Illustration: Sarah Grillo/Axios

  1. Politics: The swing states where the pandemic is raging — Pence no longer expected to attend Barrett confirmation vote after COVID exposure.
  2. Health: 13 states set single-day case records last week
  3. Business: Where stimulus is needed most.
  4. Education: The dangerous instability of school re-openings.
  5. States: Nearly two dozen Minnesota COVID cases traced to 3 Trump campaign events
  6. World: Unrest in Italy as restrictions grow across Europe.
  7. Media: Fox News president and several hosts advised to quarantine.
Updated 13 mins ago - Politics & Policy

Republicans and Dems react to Coney Barrett's Supreme Court confirmation

President Trump stands with Judge Amy Coney Barrett after she took the constitutional oath to serve as a Supreme Court justice during a White House ceremony Monday night .Photo: Tasos Katopodis/Getty Images)

President Trump said Judge Amy Coney Barrett's Senate confirmation to the Supreme Court and her subsequent taking of the constitutional oath Monday was a "momentous day," as she she vowed to serve "without any fear or favour."

Of note: As Republicans applauded the action, Democratic leaders warned of consequences to the rush to replace the late liberal Justice Ruth Bader Ginsburg with a conservative so close to the election, as progressives led calls to expand the court.

Hurricane Zeta makes landfall in Mexico ahead of expected arrival in U.S.

Hurricane Zeta's forecast path. Photo: National Hurricane Center

Hurricane Zeta made landfall on Mexico's Yucatan Peninsula as a Category 1 storm late Monday packing maximum sustained winds of 80 mph, per the National Hurricane Center.

The state of play: Louisiana Gov. John Bel Edwards (D) declared a state of emergency Monday as Zeta strengthened into a hurricane earlier Monday.