The State of Wisconsin Investment Board (SWIB) is a state agency responsible for managing the Wisconsin Retirement System (WRS) and other state trust funds. Established in 1951, SWIB is one of the largest public pension fund investment organizations in the United States. The organization manages over $140 billion in assets (as of 2023), primarily for the benefit of more than 652,000 current and former state employees, teachers, and other public workers in Wisconsin. SWIB operates as an independent state agency, governed by a nine-member Board of Trustees. The organization employs a team of investment professionals who manage both internal and external investment portfolios across various asset classes, including public equities, fixed income, real estate, private equity, and multi-asset strategies. The agency is known for its innovative investment approaches and strong internal management capabilities, which help reduce external management fees and maximize returns for beneficiaries. SWIB has received recognition for its sophisticated investment strategies and risk management practices. The organization maintains its headquarters in Madison, Wisconsin, and has consistently ranked among the best-performing public pension funds in terms of long-term investment returns and funded status.