[3] The firm has owned or co-owned a number of well-known Australian companies including, Affinity Education, Barbeques Galore, Darrell Lea, Journey Beyond, Fitness First, and Timezone.

[14] In 2012, Quadrant and Ironbridge Capital formed BBQSAM Holdings after acquiring retailers Barbeques Galore and Amart Furniture.

[15][16] Quadrant purchased Zip Industries in 2013[17] from its founder, and after abandoning an IPO offloaded the company to Culligan in 2017 for around US$550 million.

[19] The deal was recognised with an award from The Australian Private Equity and Venture Capital Association Limited (AVCAL).

[30] In 2017, Quadrant sold their majority share of Icon Group, Australia's largest oncology provider, in a reported $1.1 billion deal.

[34] Quadrant acquired Jaybro, a supplier to the construction and infrastructure sector operating in Australia and New Zealand, in March 2022.