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State of Wisconsin Investment Board

Pension fund · Founded 1951 · Madison, United States

$156B assets under management5% to venture · ~$7.8B

State of Wisconsin Investment Board (SWIB)

281 funds backed Last investment 11/2025
Funds backed 281
Power Law funds backed 14
Direct holdings 19 ↑ 6% 5y
Background

Who State of Wisconsin Investment Board is.

Where the institution came from, whose capital it manages, and how that capital is allocated — from Dealroom's LP research.

Historical Background

  • The State of Wisconsin Investment Board (SWIB) was established in 1951 as an independent state agency.
  • It was created to manage the assets of the Wisconsin Retirement System and other state trust funds.

Source of Capital

  • SWIB's capital is primarily sourced from the Wisconsin Retirement System (WRS), which constitutes the majority of its assets under management.
  • The agency also manages funds for the State Investment Fund (SIF) and several other smaller state trust funds.

Allocation Strategy

  • SWIB employs a diversified allocation strategy across a variety of asset classes, including public stocks, bonds, real estate, private equity, and private debt.
  • The board has been increasing its target allocation to private markets, with a reported target of 20% for private equity and debt.
  • Asset allocation is a key component of the fund's long-term strategy and is reviewed annually to ensure it meets its investment objectives.
Allocation

How State of Wisconsin Investment Board’s fund book is spread.

The 281 funds State of Wisconsin Investment Board backs, by where the manager is headquartered and how many funds that manager has raised.

Where those managers are based

By fund headquarters, across the 279 of 281 with a location on record.

  • North America 22781%
  • Europe 4315%
  • Rest of world 93%

United States 224 · United Kingdom 26 · Germany 4 · Hong Kong 4

How established those managers are

Managers grouped by how many funds they have raised. 81 emerging (three funds or fewer), 99 established — across the 180 of 281 with a fund history on record.

37 1
23 2
21 3
18 4
29 5-6
22 7-9
16 10-14
14 15+
Funds raised by the manager
Emerging · up to 3 funds Established · 4 or more
Direct investments

The companies State of Wisconsin Investment Board backs directly.

State of Wisconsin Investment Board holds 19 companies directly, separate from the funds it commits to as a limited partner. The 12 largest by total funding are shown.

HistoSonics
Health · USA
$3.8B valuation Unicorn
Elephas
Health · USA
$275M valuation
FluGen
Health · USA
$8.0M valuation
EatStreet
Food · USA
$24M valuation
AdvanDx
Health · USA
$48M valuation
Roche NimbleGen
Health · USA
$33M valuation
NeuWave Medical
Health · USA
$101M valuation
Rentable
Real Estate · USA
$90M valuation
Neurovance
Health · USA
$250M valuation
Montage Talent
Jobs Recruitment · USA
$32M valuation
OpGen
Health · USA
$255M valuation
Modern Hire
Jobs Recruitment · USA

How those direct holdings break down by headquarters country, sector, entry stage and current growth stage. "Stage entered" is the first priced round the investor joined, derived from the investor’s transaction history.

By countryCount
  1. USA19
By sectorCount
  1. Health11
  2. Jobs Recruitment3
  3. Marketing2
  4. Food1
  5. Real Estate1
  6. Telecom1
By stage enteredCount
  1. Series B+9
  2. Series A8
  3. Seed2
By growth stageCount
  1. Breakout Stage13
  2. Late Growth4
  3. Early Growth2
Portfolio market map

Inside State of Wisconsin Investment Board’s portfolio.

The 18 highest-funded portfolio companies, of 19 tracked.

HistoSonics
Health · Unicorn
$3.8B
Elephas
Health
$275M
FluGen
Health
$8.0M
EatStreet
Food
$24M
AdvanDx
Health
$48M
Roche NimbleGen
Health
$33M
NeuWave Medical
Health
$101M
Rentable
Real Estate
$90M
Neurovance
Health
$250M
Montage Talent
Jobs Recruitment
$32M
OpGen
Health
$255M
Modern Hire
Jobs Recruitment
Datica
Health
$26M
ABODO
Marketing
$14M
Zystor
Health
$115M
Pinstripe
USA
Cielo
Jobs Recruitment
$12M
Cumulus Media
Marketing
Portfolio founders

Where State of Wisconsin Investment Board’s portfolio founders come from.

19 founders across the 19 highest-funded portfolio companies — by current location, university attended, and the companies they worked at before founding. Sourced from the founder records the API links to each portfolio company.

LocationCount
  1. United States17
  2. Canada1
  3. Denmark1
UniversityCount
  1. University of Wisconsin-Madison3
  2. Boston University1
  3. Indian Institute of Technology Bombay1
  4. The University of Oklahoma1
  5. University of Michigan1
  6. University of Minnesota Twin Cities1
  7. University of Pennsylvania1
  8. University of Virginia1
  9. University of Wisconsin-Milwaukee1
Previous companyCount
  1. Abbott1
  2. Affymetrix1
  3. Alantos Pharmaceuticals1
  4. Axeda1
  5. Biolin Scientific1
  6. Farcast1
  7. GSK1
  8. Kony Solutions1
  9. LifeTechnologies1
  10. NextPoint1
Figures on this page are sourced live from the Dealroom next-gen API, joined with Dealroom’s cap-table dataset (estimated holdings) and the Power Law Investor Ranking. News in “Featured in” is drawn from Dealroom’s own coverage — the stories that name this investor, not only those it is the subject of. Market sentiment is omitted until the API exposes it.