Signature Estate & Investment Advisors

Signature Estate & Investment Advisors

Founded in 1997 and led by President Matt Matrisian, SEIA originated as a registered investment advisory firm pairing core investment management with holistic financial planning. The firm serves individuals, trusts, estates, charitable organizations, corporations, and businesses, reflecting a deliberately broad client mandate rather than a single-family or institutional-only focus. SEIA's advisory model spans investment management, financial planning, and risk management, administered under a fiduciary standard. The firm's public materials emphasize a collaborative, long-term advisory relationship rather than a transactional brokerage posture. Its strategy is built on a foundation of customization, with news commentary in May 2026 covering IPO risk assessment and a contemporaneous press profile on the firm's internal growth playbook under Matrisian, suggesting active tactical allocation and business development. SEIA operates from its headquarters at 2121 Avenue of the Stars in Los Angeles, with a stated coast-to-coast service capability. The firm was ranked #19 on the Barron's Top 100 RIA Firms list for 2025, an evaluation based on assets, revenue, and practice quality. That same year, Financial Planning ranked SEIA #55 among its Best RIAs to Work For. No specific AUM, total team headcount, or named portfolio holdings are publicly disclosed. Structurally, SEIA differentiates itself by combining registered investment advisory services with what it terms a 'holistic' advisory experience — integrating investment management with personal financial planning under one roof. Unlike a single-family office or institutional asset manager, its structure is a multi-client RIA aimed at individual and trust beneficiaries, competing with both large wealth management platforms and boutique advisors through its Barron's-recognized scale.