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Since its creation on June 28, 1951, SWIB has been a forward-thinking investment organization. Support from government leaders and system participants has allowed SWIB to meet the challenges posed by a vastly changing investment industry.

From the beginning, it took a great deal of effort and cooperation to make SWIB happen and allow for an uncommon approach to managing state money, including the pension funds. Spearheaded by an unconventional alliance that included public policymakers who could see the state’s uninvested cash balances sitting idle, and union officials who were concerned about the diminishing value of contributions made to public worker pensions, SWIB was the work of visionaries who wanted to help ensure a strong financial future for trust fund beneficiaries. Still, they probably never imaged SWIB as we know it today. In fact, at that time, it is safe to say not many people envisioned an agency with over $156 billion in assets, and a diverse and complex portfolio of investments.

SWIB is probably best known for its management of the Wisconsin Retirement System (WRS) trust funds. Today, the WRS is among the best-funded and best-managed public pension systems in the world thanks in large part to the work of SWIB. As a world-class investment organization, SWIB works to bring a disciplined, prudent, and innovative approach to the investments made for the WRS. But success does not come by chance. It takes a strong organizational strategy, leadership, and award-winning staff to ensure SWIB remains an agile and integrated organization that adds value to the funds it manages.

SWIB has a long history of being an industry leader among institutional investors innovating to meet challenging financial markets. Since its founding, SWIB's investment strategy has become more complex. Starting with the simple investments in bonds, mortgages and some stocks in the early years, SWIB has been a leader in developing strategies designed to ensure a strong financial future for retirement system beneficiaries. In addition to being a leader in investing in equities, SWIB became one of the first pension funds to include a private placements investment program in 1965. In 1989, international markets were added, and the world was opened to the Investment Board. In 1995, SWIB again moved to the forefront by moving into developing countries as former communist states in eastern Europe were opening their borders and their economies. In 1999, it was a new venture capital program focused on Wisconsin and the Midwest. More recently, SWIB established global portfolios, added leverage, hedge funds, and more.

In 2021, SWIB celebrated its 70th anniversary. Click here to read more about SWIB's 70th anniversary.


Throughout its history, SWIB has earned awards and recognition from industry publications and staff. Most recently, in 2023, the financial industry again took notice of the hard work, success, and innovation of SWIB's Board of Trustees. SWIB was recognized with the Board of the Year Award at the 6th Annual Institutional Investor Allocators' Choice Awards. 

The award recognized SWIB's Board for its role in facilitating SWIB's ability to implement a flexible investment strategy to stay positioned for long-term success amidst challenging markets in 2022. The Board also adopted a new long-term incentive plan as part of its competitive pay-for-performance compensation program that will assist in attracting and retaining talented professionals while also aligning them with the interests of Wisconsin Retirement System (WRS) participants.

Click here to read more about SWIB's achievements and recognition. 

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Gov. Oscar Rennebohm
As the governor of Wisconsin from 1947-1951, Oscar Rennebohm was crucial to the creation of SWIB. Prior to SWIB’s creation, money collected by the state was placed in non-interest earning accounts. By the late 1940s, the state’s surplus had accumulated to over $30 million. Concerned that these funds weren’t earning interest for the state, Rennebohm appointed John C. Lobb to head the project that ultimately became SWIB. While Rennebohm opted against running for re-election in 1950, his initiative to invest Wisconsin’s surplus proved beneficial for Wisconsin and Wisconsin’s public employees both then and now.

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State Treasurer John L. Sonderegger
Like Gov. Rennebohm, State Treasurer John L. Sonderegger was a key figure in the creation of SWIB in the late. Sonderegger, who served as state treasurer from 1947 to 1948, shared Rennebohm’s concerns about Wisconsin’s failure to invest the state’s money to earn long-term interest, and he was among the leaders during the research phase of SWIB’s creation. Despite only serving as state treasurer for a little over a year, Sonderegger’s legacy lives on today through SWIB.


John Lawton
Like Roy Kubista, John Lawton was a crucial figure in the passage of the bill that created SWIB. Lawton represented municipal and local employees in Wisconsin, so his main concern was ensuring public employees had sufficient pension funds when it came time for them to retire. Therefore, Lawton understood that funds needed to be invested in vehicles that would guard against inflation and produce an adequate return on investment. Lawton worked alongside John C. Lobb and Kubista to ensure the bill was passed in June 1951, protecting the future of the employees he represented.

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Roy Kubista

After completing the research phase of the creation of SWIB, John C. Lobb contacted Roy Kubista, who represented the Wisconsin State Employees Association, to secure his support for the plan. Kubista was very concerned about the diminishing value of the contributions made by public employers and employees to the pension funds. In an article written by Kubista, he explained the need to invest public employees’ money to ensure they would have enough money to retire after accounting for inflation. Kubista was crucial to the passage of the bill, which was voted on and passed in June 1951 with overwhelming majorities in both houses of the state legislature.

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John C. Lobb

Under the leadership of Gov. Oscar Rennebohm and State Treasurer John L. Sonderegger in the late 1940s, John C. Lobb was appointed to head a project to research how to invest the state's money to earn interest. Lobb ultimately recommended the creation of SWIB to manage the funds for state and local governments, plus the pension funds for public employees. Lobb's proposal addressed two major issues: Earning interest on the state's cash balances and maximizing investment returns for public employees and teachers. Following the inception of SWIB in 1951, Lobb was appointed as one of the three commissioners responsible for investing the funds.

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Ingeborg Sidwell

As a woman who had scrubbed the Wisconsin Capitol floors for 23 years, Ingeborg Sidwell went directly to acting Wisconsin Gov. Walter Goodland in 1943 to tell him she was getting too old to continue the job. After Goodland initially vetoed a proposal to institute pensions for government employees due to the ongoing war, Sidwell managed to convince him to change his mind. Goodland wrote to the state legislature asking for them to override the veto, to which they complied. Sidwell contributed to Wisconsin’s first pension program, paving the way for SWIB’s creation less than a decade later.


As of Aug. 1, 1951, total assets under SWIB's management were $347 million. Approximately half were pension funds belonging to state and local employees and teachers. State operating funds comprised the balance. Today, SWIB is responsible for managing the assets of the Wisconsin Retirement System (WRS), the State Investment Fund (SIF), and other state trust funds. As of Dec. 31, 2022, SWIB managed about $143 billion in assets.

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