AllSides Media Bias Rating™: Lean Left
The bias meter value for Bloomberg is -2.40. -6 is the furthest "Left" value and 6 is the furthest "Right" value.
Lean Left What does this mean?

How we determined this rating:

  • Independent Review
  • Community Feedback:   ratings
  • Blind Survey: Aug 2020, May 2017, Oct 2013
  • AllSides has high confidence in this bias rating.

Unless otherwise noted, this bias rating refers only to online news coverage, not TV, print, or radio content.

Learn about our bias rating methods
Bias Rating Lean Left
Type News Media
Region National
Owner Bloomberg LP
Established 1990
Twitter @business
Facebook bloombergbusiness
Wikipedia Bloomberg
What a Lean Left Bias Rating Means

The source displays media bias in ways that moderately align with liberal, progressive, or left-wing thought and/or policy agendas.

Learn more about Lean Left ratings
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About Bloomberg's Bias Rating

Bloomberg is featured on the AllSides Media Bias Chart™.

Bloomberg is a news media source with an AllSides Media Bias Rating™ of Lean Left.

What a "Lean Left" Rating Means

Sources with an AllSides Media Bias Rating of Lean Left display media bias in ways that moderately align with liberal, progressive, or left-wing thought and/or policy agendas. A Lean Left bias is a moderately liberal rating on the political spectrum.

Learn more about Lean Left ratings


Media Bias by Omission: Bloomberg Doesn't Investigate Democratic Presidential Candidates

As of Nov. 2019, Bloomberg admits that it engages in bias by omission with a Lean Left bent. Mike Bloomberg, New York City mayor and founder of the financial software company that owns Bloomberg, officially entered the 2020 Democratic presidential race in Nov. 2019. According to a memo sent to editorial and research staff obtained by CNBC and verified by a Bloomberg spokesperson, Bloomberg News announced it would refrain from investigating Mayor Bloomberg and his Democratic rivals.

“We will continue our tradition of not investigating Mike (and his family and foundation ) and we will extend the same policy to his rivals in the Democratic primaries. We cannot treat Mike’s democratic competitors differently from him,” Editor-in-Chief John Micklethwait said in the memo.

In Dec. 2019, President Donald Trump's campaign announced it would stop credentialing Bloomberg News reporters for rallies and other events until the outlet resumed investigating Democratic candidates.

Mike Bloomberg is founder and 89% shareholder in Bloomberg LP, the financial software company that owns Bloomberg News.

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Bias Reviews

We use multiple methods to analyze sources. Learn how we rate media bias.

Bloomberg rated Lean Left in Aug. 2020 AllSides Blind Bias Survey

AllSides changed Bloomberg's media bias rating from Center to Lean Left after reviewing the data from our August 2020 Blind Bias Survey, which found that respondents from all political groups on average rated Bloomberg's bias as Lean Left.

Pluralities of respondents across groups who identified their own personal political bias as Left, Lean Left, Center, or Lean Right all rated Bloomberg as Lean Left; a plurality of Right respondents rated Bloomberg's bias as Left.


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Community Feedback

Feedback does not determine ratings, but may trigger deeper review.

As of May 2024, people have voted on the AllSides Media Bias Rating for Bloomberg. On average, those who disagree with our rating think this source has a Lean Left bias.

Confidence Level

Confidence is determined by how many reviews have been applied and consistency of data.

As of May 2024, AllSides has high confidence in our Lean Left rating for Bloomberg. Two or more bias reviews have affirmed this rating or the source is transparent about bias.

Additional Information

Bloomberg L.P. is a privately held financial, software, data and media company founded in 1981 in New York City. It initially began as a computerized system founded by Michael Bloomberg with the help of Thomas Secunda, Duncan MacMillan, and Charles Zegar, designed to provide real-time market data and analytics to firms on Wall Street. With the help of an ownership investment by Merill Lynch, the company was able to develop the Bloomberg terminal computer system in 1983.

Bloomberg currently provides news in a variety of formats, including a wire service, a global television network, digital websites, a radio station, newsletters and magazines. With a focus on business and economics-related topics, Bloomberg News has redefined itself to become the “chronicle of capitalism,” as editor-in-chief John Micklethwait indicated in 2015. Bloomberg’s main source of revenue remains the Bloomberg Terminal, which offers financial software tools to companies and organizations on Wall Street. 

Source: Bloomberg Facts

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Bloomberg Ownership and Funding

Funding and ownership do not influence bias ratings. We rate the bias of content only.

Owner: Bloomberg LP

Bloomberg News is owned by Bloomberg Inc. Bloomberg Inc. is majority owned by Micheal Bloomberg, the former Mayor of New York City, who ran in the Democratic Primary in 2020 and was ranked the 16th richest person in the world by Forbes in 2020, with an estimated net worth of $48 billion as of April 2020.

Financing and ownership information last updated February 22, 2021. If you think this information is out of date or needs to be updated, please contact us.

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