President Trump Donald John TrumpFederal prosecutor speaks out, says Barr 'has brought shame' on Justice Dept. Former Pence aide: White House staffers discussed Trump refusing to leave office Progressive group buys domain name of Trump's No. 1 Supreme Court pick MORE on Monday seized on news that an activist investor group has a stake in AT&T to slam CNN, tweeting that the news network is "bad for the USA."

"Great news that an activist investor is now involved with AT&T. As the owner of VERY LOW RATINGS @CNN, perhaps they will now put a stop to all of the Fake News emanating from its non-credible 'anchors,' " Trump tweeted.

"Also, I hear that, because of its bad ratings, it is losing a fortune. But most importantly, @CNN is bad for the USA," he continued. "Their International Division spews bad information & Fake News all over the globe."

Trump also repeated his claim that foreign leaders often ask him why the U.S. media hates the country, an assertion he made during the Group of Seven summit last month. Foreign leaders have not publicly made similar comments, nor have they confirmed raising those concerns privately to Trump.

Great news that an activist investor is now involved with AT&T. As the owner of VERY LOW RATINGS @CNN, perhaps they will now put a stop to all of the Fake News emanating from its non-credible “anchors.” Also, I hear that, because of its bad ratings, it is losing a fortune..... — Donald J. Trump (@realDonaldTrump) September 9, 2019

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The president's tweets came as part of a series of morning social media missives blasting news organizations and complaining that he does not receive proper credit for his administration's accomplishments.

CNN spokesman Matt Dornic later tweeted that CNN "is having its most profitable year in history."

In case you hear differently, CNN is having its most profitable year in history. Last month the network delivered its highest August ratings on record and won the prime time demo - beating both Fox and MSNBC. ‍♂️ — Matt Dornic (@mdornic) September 9, 2019

AT&T stocks jumped Monday on Elliott Management's announcement that it has a $3.2 billion share in the company, which owns CNN after a merger with Time Warner. The hedge fund is run by Paul Singer, who supported Sen. Marco Rubio Marco Antonio RubioGOP lawmakers distance themselves from Trump comments on transfer of power McConnell pushes back on Trump: 'There will be an orderly transition' Graham vows GOP will accept election results after Trump comments MORE (R-Fla.) in the 2016 election but later contributed to Trump's inauguration.

CNBC reported that Elliott Management wrote a letter to AT&T's board arguing for certain changes to the company's business model. The group raised concerns about AT&T's merger with Time Warner, questioning the rationale behind the move.

Trump came under scrutiny after it was reported that he pressured his top economic adviser to urge the Department of Justice to block the $85 billion merger because of his longtime feud with CNN.

The president routinely chastises CNN as "fake news," targeting specific anchors and reporters and complaining about coverage he dislikes. His supporters often chant "CNN sucks" during campaign rallies.

In a pair of follow-up tweets on Monday, Trump took aim at Comcast-owned MSNBC, complaining that the network — whose prime-time lineup features left-leaning hosts — is "incapable of saying anything positive" about him.

As bad as @CNN is, Comcast MSNBC is worse. Their ratings are also way down because they have lost all credibility. I believe their stories about me are not 93% negative, but actually 100% negative. They are incapable of saying anything positive, despite all of the great things... — Donald J. Trump (@realDonaldTrump) September 9, 2019

"We get ZERO media credit for what we have done, and are doing, but the people know, and that’s all that is important!" Trump added.

The Trump Administrations has achieved more in the first 2 1/2 years of its existence than perhaps any administration in the history of our Country. We get ZERO media credit for what we have done, and are doing, but the people know, and that’s all that is important! — Donald J. Trump (@realDonaldTrump) September 9, 2019

— This report was updated at 9:59 a.m.