Sausalito, CA Office

Main Street Research LLC provides wealth management to individuals, families, foundations, and institutions, delivering comprehensive financial planning and discretionary investment management. The firm manages roughly $2.68 billion for about 1,018 client relationships through a multi‑advisor team of 17 and serves both non‑high‑net‑worth and high‑net‑worth clients, with outside chief investment officer services available for institutional or foundation clients.

Investment advice is tailored through in‑depth client interviews and an investment policy process overseen by an internal investment committee that applies fundamental, quantitative, and technical analysis. Portfolios emphasize individual securities — domestic and foreign stocks, bonds, REITs, MLPs, and preferred stock — with ETFs used for diversification or access, and the firm offers an ESG model and the ability to select sub‑advisors for specialized strategies.

Notably, MSR offers an elective performance‑based fee schedule (available only to Rule 205‑3 qualified clients) that combines a management fee with a quarterly performance allocation subject to a high‑water mark and tiered allocation percentages. The firm also engages sub‑advisors for specialized overlays — including an options/collar program for concentrated stock positions (via SpiderRock Advisors) and an active long/short tax‑loss harvesting strategy (via Quantinno) that requires margin — and requires a 24‑month commitment when clients change fee schedules.