Following Invesco AIM were American Funds Group, Fidelity Investments and OppenheimerFunds Inc.
Invesco Aim of Atlanta scored Number 1 in providing best 401(k) resources,according to a study released by Corporate Insight Inc.
The firm was touted for offering management strategies for high-net-worth companies and individuals.
It was also the only firm among the nine surveyed that displayed a plan comparison chart on its website.
Following Invesco, the top three companies ranked by the New York-based research firm were the American Funds Group, advised by Capital Research and Management Co. of Los Angeles, Fidelity Investments of Boston and OppenheimerFunds Inc. of New York.
The rankings were based on organization, architecture and plan-site demonstration and on resources such as workbooks, comparison charts and participant education.
Only 53% of the firms monitored by Corporate Insight offered resource areas on their adviser sites devoted to 401(k) plans, according to Corporate Insight.
Of the 67% of firms that offered adviser-only 401(k) guides, Fidelity provided the strongest, including a full prospecting and selling plan and explanations, Corporate Insight said.
Forty-four percent of the firms addressed participant education.
Oppenheimer offers a resource outlet that groups clients into different behavioral categories.
Fifty-six percent of the firms offered 401(k) worksheets.