[5] This move was followed by the termination of several team sponsor and supplier contracts, including the home arena's name rights holder Hartwall, as a response to the invasion.

On 27 October 1967, Jokerit officially took shape during a momentous constitutional meeting, with Mäkinen assuming the role of the club's sole owner and wielding sovereign power, effectively acting as the board and managing director.

The club adopted an emblem depicting a winking jester, creatively adapted from various jokers found in diverse card decks, designed meticulously by graphic artist Jorma Hinkka.

Aiming to strengthen the team for the challenges ahead, Aimo Mäkinen, as the club's sole owner, embarked on an assertive campaign to acquire star players.

Notable additions included national team regulars, such as defenceman Ilpo Koskela, Veli-Pekka Ketola and forwards Henry Leppä and Timo Sutinen, who would go on to establish enduring connections with the club.

Subsequent to these initial reinforcements, Jokerit further bolstered its roster with noteworthy signings, including forward Jouko Öystilä and defenceman Timo Saari.

While physical and aggressive play became a prevailing strategy for many teams, Lampainen steered Jokerit towards a different path, recognizing the unsuitability of such an approach for the current lineup, particularly of the "nallipyssyketju" players.

Although Kanada-sarja did not survive beyond the 1970s, its impact was felt as Jokerit benefited from a consistent influx of emerging talent, including future stars like Jari Kurri.

These challenges, compounded by Mäkinen's controversial management style, which emphasized non-physical play, created an aura of uncertainty and turbulence for the club's future.

This significant addition led to an almost flawless season, propelling the team all the way to the SM-Liiga finals, where they faced local rivals HIFK in a best-of-five series.

In the darkest hour of their history, when Jokeriklubin Tuki Ry contemplated discontinuing their association with the club, a renewed sense of hope was infused into Jokerit.

Ari Sulander emerged as the main goaltender from 1993 to 1998, while forward Keijo Säilynoja displayed remarkable goal-scoring abilities and prowess in penalty shots.

Despite the newfound popularity supported by standout scorer Selänne and other young stars, the club's owners encountered severe financial difficulties stemming from inadequate management and internal board disagreements.

In 1991, Jokerit underwent a significant shift when an investor withdrew, leading to board member Harry "Hjallis" Harkimo assuming a double majority of shares.

Jokerit emerged as contenders and looked poised to win the regular season and championship but faltered in the late stages, finishing as silver medalists after losing to Kärpät in the finals.

Notable departures included Brian Campbell, Ossi Väänänen, Teemu Selänne, Glen Metropolit, Pasi Häkkinen, Valtteri Filppula, and Tomi Mäki.

[18] Following a challenging season that resulted in Jokerit's lowest ranking in decades, the club underwent significant changes by appointing former NHL player and head coach of HIFK, Doug Shedden, to lead the team.

Shedden's arrival brought several notable players to Jokerit, including Kim Hirschovits from HIFK, Jyrki Louhi from the 2005–06 champions HPK, and Juuso Riksman from Ässät, the second-place team in 2006.

Additionally, the team acquired scoring talent Tim Stapleton and experienced NHL player Clarke Wilm, who had previously worked with Shedden during their time with the Toronto Maple Leafs.

Shedden's inaugural season with Jokerit proved to be a success, as the team returned to the playoffs and achieved a memorable victory over the reigning champions HPK in the semi-finals.

In an effort to improve their performance, Jokerit made key player acquisitions at the start of the season, bringing in Fredrik Bremberg, Alex Brooks, Michael Nylander, and Bates Battaglia.

On 28 June 2013, Hjallis Harkimo announced that he had sold Hartwall Areena to Finnish-Russian businessmen Gennady Timchenko and Arkady, Boris, and Roman Rotenberg, with an option to buy a share of Jokerit after the 2013–14 season.

[22] Although the Finnish Ice Hockey Association granted Jokerit permission for the move, the SM-liiga stated that the club had not consulted the league according to IIHF regulations.

[24] During the 2013–14 SM-Liiga season's Christmas break, Jokerit, sitting in seventh place in the regular-season standings, dismissed Tomi Lämsä and promoted Tomek Valtonen as the head coach.

Unfortunately, they were eventually eliminated by CSKA Moscow in the conference finals.The team's home games attracted a total of 327,972 spectators during the regular season, setting a new record for attendance in Finland.

Besides the team's strong performance and significant fan interest, Jokerit made headlines due to various reasons, including a partnership deal with an international betting company, NordicBet, and the influence of the political situation in Russia.

The club had faced challenges in paying salaries due to economic sanctions imposed as a result of the War in Ukraine that had started in February 2014, affecting Jokerit's background figures Gennady Timchenko and Arkady Rotenberg.

In the playoffs, Jokerit advanced to the conference semi-finals by defeating HC Sochi 4–1 in the quarterfinals but were eliminated by CSKA Moscow in a closely contested series with a 2–4 loss.

[35] The 2020–21 season was set to begin with Jokerit playing against Dinamo Minsk in Belarus, which raised widespread criticism due to the political situation in the country.

The ownership structure of the company is distributed as follows: Class A shares are held by notable individuals within the organization, including Viima Hockey founder and owner Mikko Saarni, who serves as the chairman of the board, along with former Jokerit players Ossi Väänänen, Teuvo Teräväinen, Esa Lindell, movie producer Markus Selin, Timo Mäkelä, writer and movie director Max Seeck, and Helsingin Jokerit Ry, which is the junior organization vested with the rights to the team's name and logo.