• Home
  • Latest
  • Fortune 500
  • Finance
  • Tech
  • Leadership
  • Lifestyle
  • Rankings
  • Multimedia

Trendingnow

1

The millennial generation is split in 2: an older crowd with boomer-style comfort, a younger set going 'back to the early 1900s'

2

Trump pulls back after Iran crosses his red line as U.S. military breaks two-week streak of airstrikes amid talks for potential Hormuz deal

3

'The demographic dividend of the last 40 years is ending': J.P. Morgan says the world is running out of the two things that kept interest rates down

1

The millennial generation is split in 2: an older crowd with boomer-style comfort, a younger set going 'back to the early 1900s'

2

Trump pulls back after Iran crosses his red line as U.S. military breaks two-week streak of airstrikes amid talks for potential Hormuz deal

3

'The demographic dividend of the last 40 years is ending': J.P. Morgan says the world is running out of the two things that kept interest rates down
Elon Musk

Elon Musk to Jack Dorsey: Don’t run two companies

By
Jonathan Chew
Jonathan Chew
Down Arrow Button Icon
By
Jonathan Chew
Jonathan Chew
Down Arrow Button Icon
October 7, 2015, 8:56 AM ET
SpaceX CEO Elon Musk Unveils Company's New Manned Spacecraft, The Dragon V2
SpaceX CEO Elon Musk unveils the company's new manned spacecraft, The Dragon V2, designed to carry astronauts into space during a news conference on May 29, 2014, in Hawthorne, California. Photograph by Kevork Djansezian — Getty Images
Add Fortune on Google for similar content.

Jack Dorsey has returned to Twitter as its permanent CEO, while still holding on to the same title at payment startup Square. And that has earned some cautious words from another famous multitasker: Elon Musk.

As the dual-CEO of Tesla and SpaceX, Musk has inspired countless tales of how he manages to juggle all the responsibilities that running two major companies can bring. His advice to Dorsey? Don’t do it.

“I wouldn’t recommend running two companies,” Musk said on stage at the Vanity Fair New Establishment Summit responding to a question on how he manages both roles. “It decreases your freedom a lot.”

This, of course, coming from a man who averages six hours of sleep a day, has clocked in 100-hour working weeks for 15 years, averages one flight every two days for work, and still has time to take his five kids on a cross-country road trip. If Dorsey’s work week is anything like Musk’s, he’s going to need large doses of caffeine and a really good alarm clock.

Musk shared more on how he segments his time at work. According to The Verge, Musk spends around 70% of his time on engineering and design issues, and 3% of his time on press and speaking engagements.

The entrepreneur also shared his thoughts on self-driving cars (they’re “two to three years away”), whether he was living inside a video game (“I don’t think I’m being played by somebody”), and whether he’d like to live forever.

See below for more:

About the Author
By Jonathan Chew
See full bioRight Arrow Button Icon
Add Fortune on Google for similar content.

Latest in Careers

Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025

Most Popular

Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Fortune Secondary Logo
Rankings
  • 100 Best Companies
  • Fortune 500
  • Global 500
  • Fortune 500 Europe
  • Most Powerful Women
  • World's Most Admired Companies
  • See All Rankings
  • Lists Calendar
Sections
  • Finance
  • Fortune Crypto
  • Features
  • Leadership
  • Health
  • Commentary
  • Success
  • Retail
  • Mpw
  • Tech
  • Lifestyle
  • CEO Initiative
  • Asia
  • Politics
  • Conferences
  • Europe
  • Newsletters
  • Personal Finance
  • Environment
  • Magazine
  • Education
Customer Support
  • Frequently Asked Questions
  • Customer Service Portal
  • Privacy Policy
  • Terms Of Use
  • Single Issues For Purchase
  • International Print
Commercial Services
  • Advertising
  • Fortune Brand Studio
  • Fortune Analytics
  • Fortune Conferences
  • Business Development
  • Group Subscriptions
About Us
  • About Us
  • Press Center
  • Work At Fortune
  • Terms And Conditions
  • Site Map
  • About Us
  • Press Center
  • Work At Fortune
  • Terms And Conditions
  • Site Map
  • Facebook icon
  • Twitter icon
  • LinkedIn icon
  • Instagram icon
  • TikTok icon
  • YouTube icon

Latest in Careers

Financial advisor presents a graph to her client.
Career HubEducation
How to become a financial advisor: 4 steps to a life-long career
By Preston ForeJanuary 2, 2025
2 years ago
Group of business people look at charts and graphs.
Career HubEducation
How to become an actuary: 4 steps to earn six figures
By Preston ForeOctober 21, 2024
2 years ago
Woman analyzes a chart with a laptop next to her.
Career HubEducation
How to become a CPA
By Preston ForeSeptember 27, 2024
2 years ago
Woman explains a concept to a woman sitting next to her.
Career HubEducation
How to become an accountant
By Preston ForeSeptember 20, 2024
2 years ago
Group of varied professionals stand looking toward the camera.
Career HubEducation
These are the nation’s fastest growing jobs—and many pay $100k
By Preston ForeSeptember 13, 2024
2 years ago
Nurse pulls cash out of the front pocket of their scrubs.
Career HubEducation
A guide to a nurse’s salary: Broken down by all 50 states and industry type
By Preston ForeAugust 7, 2024
2 years ago

Most Popular

The millennial generation is split in 2: an older crowd with boomer-style comfort, a younger set going 'back to the early 1900s'
Real Estate
The millennial generation is split in 2: an older crowd with boomer-style comfort, a younger set going 'back to the early 1900s'
By Nick LichtenbergJuly 25, 2026
20 hours ago
Trump pulls back after Iran crosses his red line as U.S. military breaks two-week streak of airstrikes amid talks for potential Hormuz deal
Middle East
Trump pulls back after Iran crosses his red line as U.S. military breaks two-week streak of airstrikes amid talks for potential Hormuz deal
By Jason MaJuly 25, 2026
12 hours ago
'The demographic dividend of the last 40 years is ending': J.P. Morgan says the world is running out of the two things that kept interest rates down
Economy
'The demographic dividend of the last 40 years is ending': J.P. Morgan says the world is running out of the two things that kept interest rates down
By Eleanor PringleJuly 24, 2026
2 days ago
An 11-year-old is cleaning his neighbors' trash cans for $10 each—he now has 100K followers as teens face the worst summer job market since 1948
Success
An 11-year-old is cleaning his neighbors' trash cans for $10 each—he now has 100K followers as teens face the worst summer job market since 1948
By Orianna Rosa RoyleJuly 25, 2026
22 hours ago
Jensen Huang made his $172 billion fortune on AI chips. His family's $75 million gift to Vanderbilt argues art decides what technology is for
Big Tech
Jensen Huang made his $172 billion fortune on AI chips. His family's $75 million gift to Vanderbilt argues art decides what technology is for
By Sydney LakeJuly 23, 2026
3 days ago
A Hims cofounder fired his entire marketing team for AI. Now his 24/7 online vet service is growing 20% a month
Success
A Hims cofounder fired his entire marketing team for AI. Now his 24/7 online vet service is growing 20% a month
By Sydney LakeJuly 25, 2026
18 hours ago

© 2026 Fortune Media IP Limited. All Rights Reserved. Use of this site constitutes acceptance of our Terms of Use and Privacy Policy | CA Notice at Collection and Privacy Notice | Do Not Sell/Share My Personal Information
FORTUNE is a trademark of Fortune Media IP Limited, registered in the U.S. and other countries. FORTUNE may receive compensation for some links to products and services on this website. Offers may be subject to change without notice.