Signature Estate & Investment Advisors

Signature Estate & Investment Advisors

Founded in 1997 and headquartered in Century City, Signature Estate & Investment Advisors operates as a registered investment advisory firm serving individuals, trusts, estates, charitable organizations, and businesses. The firm structures its client relationships around a dual foundation of financial planning and investment management, layering risk management and holistic advisory over that base. SEIA's investment posture spans direct advisory and discretionary portfolio management. The firm's public disclosures frame its approach as customized and collaborative, with a client service model that originates from its Los Angeles headquarters and extends nationally. SEIA does not publish specific asset-class allocations or portfolio companies; its known footprint is anchored in US wealth management with a coast-to-coast service claim. Team details and AUM figures remain undisclosed. President Matt Matrisian leads a firm that has drawn coverage in financial trade press, including a May 2026 interview where he discussed SEIA's growth strategy. The firm also placed #55 on Financial Planning's 2025 Best RIAs to Work for list. These rankings acknowledge scale and operational quality without revealing underlying numbers. SEIA's structural differentiator is its pure RIA posture within an industry segment increasingly dominated by bank-owned wealth platforms and consolidators. As a privately held firm founded over a quarter century ago, it offers an alternative governance model for clients seeking an advisor not attached to a parent institution's balance sheet or proprietary product shelf.