O'Brien Investment Management, LLC

O’Brien Investment Management provides discretionary investment management to individuals (including high‑net‑worth clients), trusts, estates, charities, businesses, and individual retirement plan participants. The firm reports approximately $225–$275 million in regulatory assets under management across roughly 165 client relationships and offers to manage “held‑away” accounts such as 401(k), 403(b) and 529 plan participant accounts through a third‑party Pontera order management platform.

The firm’s investment practice focuses on building and rebalancing portfolios of publicly traded equities, fixed income, mutual funds and ETFs, with a typical holding horizon of more than a year unless rebalancing or changes in outlook dictate otherwise. O’Brien operates with discretionary trading authority, reviews accounts at least quarterly, and aggregates orders across client accounts when appropriate to seek equitable execution while accounting for each client’s objectives and risk tolerance.

Noteworthy distinctions include the combination of substantial AUM with no stated account minimums and an explicit program to manage held‑away retirement and participant accounts via Pontera, which permits indirect discretionary management without direct custodial access. The firm also does not sponsor wrap fee programs and does not vote client proxies, items that may be material to prospective clients comparing service models.