In 1973, Per Bjerregaard stopped his active career at 27 years of age and became chairman of Brøndby; his first action was to sack head coach Sinding.

In 1983, Laudrup was sold to Juventus in the then-biggest transfer deal in Denmark, giving Brøndby the economic foundation to expand further.

In 1990, Brøndby hired former national team captain Morten Olsen as coach, and under his reign, the 1990–91 UEFA Cup became the high point in the short history of the club.

In the 88th minute of the semi-final, however, a Rudi Völler goal denied Brøndby a trip to the UEFA Cup final in favour of Roma.

[2] A long-term rescue plan was initiated to save the club, but these events influenced the performance of the team and the championship, now called the Danish Superliga, was not won again until 1996.

Most importantly for the club's economy, Brøndby qualified for the new format of the European Cup, rebranded as the UEFA Champions League.

[4] The building project was finalized in Autumn 2000, and on 22 October, 28,416 spectators saw Brøndby beat Akademisk Boldklub 4–2 in the opening match of the rebuilt stadium.

In the process, Laudrup told several players to find new clubs as he thought they would not fit in the playing style he wanted to implement.

After losing 2–4 to Horsens on 26 August, their 23rd consecutive away match without a victory, the team was met by approximately 200 furious fans and cries like "die mercenaries" and "we are Brøndby, who are you?"

Some praised the former player for trying to save the club, while others criticized him for bringing investor Aldo Petersen along, a keen supporter and former stockholder of rivals F.C.

[15] Following a disappointing beginning of the 2007–08 Superliga season with only five points gained from seven matches, manager Tom Køhlert made it clear in August 2007 that the Danish Cup now had a higher priority for the club.

[16] The change of priorities was successful, and Brøndby won their first domestic title in almost three years on 1 May 2008 when Esbjerg were defeated 3–2 in the final of the 2007–08 Danish Cup.

On 30 December 2009, KasiGroup owner Jesper Nielsen got in trouble with Brøndby and refused to pay the remainder of the pledged money.

[20] In May 2013, the club was again close to bankruptcy, but was taken over and saved by a small group of investors led by Ole Abildgaard and Aldo Pedersen.

As part of the contract, Danish telecommunications company TDC A/S (which owns 51% of Bet25), installed Wi-Fi in Brøndby Stadion in December 2014.

[25] In 2016, Thomas Frank announced his resignation as Brøndby IF manager after chairman Jan Bech Andersen had discredited him on an online chat-forum under the name of "Oscar", the case being referred to as "Oscar-gate" by the media.

Between 2016 and 2019, the club was to make the Superliga championship playoff every year, become more transparent and reach economic viability by the end of the period.

[27] Finally, between 2020 and 2023, Brøndby was to reach European football every season and continue to improve in areas of community, transparency and economy.

The focal point of Brøndby under Zorniger was an extreme form of the German Gegenpressing tactic, popularly translated to overfaldsfodbold (assault football) in Denmark; a style which proved to be a success.

[30] During the 2017–18 season, Brøndby mounted an eventful title charge to eventually finish second behind FC Midtjylland after being top of the table in the penultimate round.

[32] His position had earlier been called into question after a match against Hobro IK in December 2018, where Brøndby's starting lineup featured no Danes.

[36] A month later, Carsten "CV" Jensen was appointed as Director of Football in Brøndby, and became the person responsible for meeting the requirements of implementing Strategi 6.4.

[40] In August 2022, chairman of the club Jan Bech Andersen sold over half of his shares to Global Football Holdings (GFH), an American sports investment company owned by David Blitzer.

[44] On the final matchday of the championship round in the 2023–24 season, Brøndby lost 3–2 at home against AGF, which resulted in them losing the title to Midtjylland by just one point.

A part of the merging of Brøndbyvester IF and Brøndbyøster IF was a promise by the Brøndby municipality mayor to build a ground, and in 1965 it was ready for the club to play in.

As newly promoted to the top Danish league in 1982, concrete terraces opposite the main stand were constructed, allowing for a crowd of 5,000 additional people.

When Brøndby played matches against other successful European teams in the 1990–91 UEFA Cup, the then capacity of up to 10,000 spectators was quickly dwarfed by the ticket interest.

Since then, the stadium has seen a number of lesser or larger infrastructural and technical enhancements, and the February 2004 European match against Barcelona was played in front of a 26,031-spectator crowd.

Founded in 2006, the group is placed in the centre of the Southside Stand and are the main organizers of songs, flags, banners and tifo.

Apart from Denmark, players from Nigeria, Norway, Lithuania, Burkina Faso, Sweden, Faroe Islands, Morocco, Iceland, Zambia, Australia, Gambia, United States, Finland, North Macedonia, South Africa, Costa Rica, Poland, Hungary, Czech Republic, Kosovo, South Korea, Tunisia and Paraguay have represented their countries.