<span style="line-height: 18.9091px;">The company, which Genstar and Aquiline first backed in 2013, is attracting strong interest from prospective buyers, according to people with knowledge of the deal . Concord, Calif.-based AssetMark provides investment and consulting services for financial advisers as well as services related to relationship and practice management. The company is generating $60 million to $70 million in trailing 12-month earnings before interest, taxes, depreciation and amortization.</span>