After months of negotiations, Boston-based private equity firm TA Associates has reached an agreement to buy asset manager Russell Investments from the London Stock Exchange for $1.15 billion. Financial News takes a look at Russell Investment's new owner.

Who are TA Associates?
Boston-based TA Associates is one of the oldest growth-oriented private equity firms in the US, having been founded in 1968. The firm does buyouts of companies across North America, Europe and Asia, but unlike many private equity firms is also happy to buy minority stakes in businesses where it does not have full control of the company.