Kyösti Niilo Juhani Kakkonen

Heimo Valinen Oy owns and operates as a grocery store. It operates its business through its subsidiary company K-Supermarket seilori. The company was founded in 1997 and is located in Espoo, Finland

Nanocomp Oy Ltd. designs and manufactures micro- and nanophotonics solutions. It develops thin foil optics. The firm offers service from design to tooling and mass production of micro- and nanoscale surface structures. It products and services is use for displays; three-dimensional sensing/gesture recognition; laser measuring; wearable devices; and healthcare application. The company was founded by Veli-Pekka Leppänen in 1997 and is headquartered in Lehmo, Finland.

Joensuun Kauppa ja Kone Oy (Joensuun Kauppa ja Kone) is a private equity firm subsidiary of Kakkonen-Yhtiöt Oy founded in 1984. The firm is headquartered in Joensuu, Finland.

K2 Invest Oy is a Finnish company that provides real estate services. The private company is based in Joensuu, Finland. The company was founded in 2008. Kyösti Niilo Juhani Kakkonen has been the CEO of the company since 2008.

Kakkonen-Yhtiöt Oy engages in providing financial investment services. The company is headquartered in Joensuu, Finland.

Tokmanni Oy operates discount retails stores. Its products include clothing, home electronics, groceries, homecare, tools, cooking wares, cleaning supplies, home decorations, and toys and hobby items. The company was founded by Kyösti Kakkosen and Kari Kakkosen in 1989 and is headquartered in Mantsala, Finland.