SGL Financial

SGL Financial

SGL Financial was founded in 2011 by Steve Lewit in Buffalo Grove, Illinois, as a registered investment adviser serving individuals, high-net-worth families, and small businesses. The firm's identity is built on a fiduciary standard, with fee transparency and a holistic planning approach that treats the advisor as a client's personal CFO. The firm's core investment strategy anchors on fixed-income portfolio construction and inflation modeling. SGL Financial targets retirement-income security, advising on Social Security claiming strategies, cost-of-living adjustments, and the long-term erosion effects of even 1–2% annual inflation on purchasing power. The team provides financial planning, retirement planning, and investment advisory, blending insurance-based income guarantees with managed portfolio assets. Client outcomes are organized around the Perpetual Retirement Income Machine methodology, authored by Lewit and distributed as a book. The firm operates from a single headquarters office in Buffalo Grove with office hours Monday through Thursday, 9:00 a.m. to 5:00 p.m. CST, and Friday until 2:30 p.m. SGL Financial maintains an educational blog that publishes pieces on inflation, fixed-income strategy, and Social Security, reflecting a practice built for Chicago-area retirees. In May 2026, the firm published research highlighting how a 1–2% inflation estimation error reshapes retirement solvency over a 20–30-year horizon. SGL Financial's structure as a boutique, single-location RIA that markets a proprietary retirement-income philosophy is its differentiator. The firm does not operate adjacent ventures, institutional capital, or multiple offices — it competes on methodology fidelity and client education, distributing Lewit's book as a lead-generation and trust-building asset.