While the magazine had been majority-owned by Yves de Chaisemartin, 91% of the capital was sold to Czech billionaire Daniel Křetínský in 2018, with Natacha Polony taking over as managing editor.

[7] During the 2007 French presidential election Marianne conducted a strong anti-Sarkozy campaign in the magazine including a special issue released on April 14~20 (#521), the day before the vote, arguing that right-wing candidate Nicolas Sarkozy was "insane" (which was the title of a previous issue)[8] in a negative portrait "of all dangers" (de tous les dangers).

Issue #521 "The Real Sarkozy" (Le Vrai Sarkozy) was named after the popular anti-Sarkozy propaganda video first released on July 5, 2006, in online services – as Dailymotion (+2,132,686 views) French counterpart of YouTube (+927,770) – by left wing supporters group RéSo (close to the French Socialist Party's Dominique Strauss-Kahn wing) author of the "AntiSarko" 2005 online campaign, which became the magazine's best seller (580,000 copies).

According to Le Monde, the editorial team is divided into two groups: sovereigntist republicans in the tradition of Jean-François Kahn, the magazine's founder who left in 2007, and social-democrats.

[16] In 2010, a Marianne investigation revealed that Robert Barcia, founder and leader of the Trotskyist Lutte Ouvrière party, had been dead for over a year.

[15][19] In 2012, documents revealed by Marianne showed influence peddling by Lyonnaise des Eaux, which had worked with the firm Vae Solis to “discredit” the local action of the Les lacs de l'Essonne agglomeration community.

[20][21] In the same year, after the departure of journalists Nicolas Beau and Stéphanie Marteau, Le Monde interpreted this event as the closure of the magazine's Investigation unit.

Three candidates received no votes at all: Nicolas Sarkozy (right), Marine Le Pen (nationalism) and Nathalie Arthaud (communism).

[25] In 2013, the magazine provided exclusive evidence in the Élysée polls affair, in which Nicolas Sarkozy was suspected of having commissioned surveys for his own campaign, paid for with public money.

[26][27] In 2014, in the Bygmalion affair, the weekly managed to obtain the UMP's internal report compiling, among other things, the list of fictitious conventions invoiced at the party's request.

[31] At the end of 2017, the Paris Commercial Court approved Marianne's receivership (in progress since 2016), which included a refocusing of the magazine's activities and a reduction in its workforce.

[34] In 2018, Marianne uncovers a conflict of interest involving Françoise Nyssen, the Minister of Culture, in the awarding of subsidies to a publishing company she owns.

[39] In April 2022, between the two rounds of the presidential election, Marianne's Society of Editors denounced a “direct intervention” by the paper's main shareholder, Daniel Křetínský, to change the front cover of the issue to be published.

Continuing a series of anti-Macron front pages, the original version of the cover should show the eyes of two candidates Emmanuel Macron and Marine Le Pen with the headline “Anger or chaos?”, without taking sides.

For Libération, Daniel Křetínský's accusation of interventionism by Marianne's editorial staff feeds suspicions of collusion between media owners and Emmanuel Macron.

[47] In September 2023, Morocco expelled two of the magazine's journalists who were investigating King Mohammed VI and “human rights violations” in the country.

The formula contained a greater amount of investigative reporting, and put an end to the classic columns, replaced by Marianne “reveals”, “deciphers”, “proposes”, “recounts” and “debates”.

After the 2012 presidential election, the newspaper struggled to redefine its editorial line and, against a backdrop of general crisis in the press, experienced an erosion in circulation (-7.96% in 2012) and revenues.

At the end of 2013, under pressure from Yves de Chaisemartin and the title's declining sales, Maurice Szafran and Laurent Neumann were dismissed and the weekly's management was reshuffled.

Called upon by shareholders to help turn the situation around, Jean-François Kahn led the editorial team of the "Nouveau Marianne", conceived by him from June to December 2013, before handing over to Joseph Macé-Scaron.

[75] “This decision was taken with the sole aim of securing its future, by enabling it to preserve its cash flow and regain the means to achieve its ambitions,” explains its chairman and CEO Yves de Chaisemartin.