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State of Wisconsin Investment Board

State of Wisconsin Investment Board Portfolio holdings

AUM $43.7B
1-Year Est. Return 27.76%
This Fund
S&P 500
This Quarter Est. Return
-0.92%
1 Year Est. Return
+27.76%
3 Year Est. Return
+95.56%
5 Year Est. Return
+123.77%
10 Year Est. Return
+486.44%
AUM
$43.7B
AUM Growth
-$1.04B
Cap. Flow
+$646M
Cap. Flow %
1.48%
Top 10 Hldgs %
26.7%
Holding
2,643
New
278
Increased
1,112
Reduced
954
Closed
152

Top Buys

Rank Stock Value
1
HEI.A icon
HEICO Corp Class A
HEI.A
+$108M
2
Z icon
Zillow
Z
+$106M
3
CCOM
Simplify Chinese Commodities Strategy No K-1 ETF
CCOM
+$104M
4
AZN icon
AstraZeneca
AZN
+$96.2M
5
NVDA icon
NVIDIA
NVDA
+$77.9M

Top Sells

Rank Stock Value
1
RSP icon
Invesco S&P 500 Equal Weight ETF
RSP
+$374M
2
XRT icon
State Street SPDR S&P Retail ETF
XRT
+$54M
3
JAAA icon
Janus Henderson AAA CLO ETF
JAAA
+$50.6M
4
BIP icon
Brookfield Infrastructure Partners
BIP
+$43.5M
5
ZG icon
Zillow
ZG
+$40.6M

Sector Composition

Rank Sector Weight
1 Technology 25.53%
2 Financials 12.43%
3 Communication Services 9.92%
4 Industrials 9.52%
5 Consumer Discretionary 8.86%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
ATEX icon
1901
Anterix
ATEX
$1.94B
$507K ﹤0.01%
13,269
-5,163
-28% -$163K
ICFI icon
1902
ICF International
ICFI
$1.72B
$506K ﹤0.01%
+7,747
New +$630K
BFC icon
1903
Bank First Corp
BFC
$1.7B
$504K ﹤0.01%
3,731
-917
-20% -$125K
VNT icon
1904
Vontier
VNT
$4.74B
$500K ﹤0.01%
14,089
+5,994
+74% +$231K
PALOU
1905
Paloma Acquisition Corp I Units
PALOU
$499K ﹤0.01%
+50,000
New +$499K
NEU icon
1906
NewMarket
NEU
$8.18B
$497K ﹤0.01%
776
+338
+77% +$219K
MZYX.U
1907
MOZAYYX Acquisition Corp Units
MZYX.U
$497K ﹤0.01%
+50,000
New +$497K
CATX icon
1908
Perspective Therapeutics
CATX
$342M
$497K ﹤0.01%
+119,114
New +$503K
SARO
1909
StandardAero Inc
SARO
$9.7B
$496K ﹤0.01%
19,203
+11,158
+139% +$333K
ADAC
1910
American Drive Acquisition Co
ADAC
$290M
$495K ﹤0.01%
+50,000
New +$495K
KRO icon
1911
KRONOS Worldwide
KRO
$989M
$494K ﹤0.01%
75,220
-39,380
-34% -$223K
ALOV
1912
Aldabra 4 Liquidity Opportunity Vehicle
ALOV
$375M
$493K ﹤0.01%
+50,000
New +$491K
INN
1913
Summit Hotel Properties
INN
$700M
$493K ﹤0.01%
111,473
+71,087
+176% +$319K
COLL icon
1914
Collegium Pharmaceutical
COLL
$956M
$491K ﹤0.01%
14,849
-27,145
-65% -$1.15M
ABCB icon
1915
Ameris Bancorp
ABCB
$5.89B
$491K ﹤0.01%
6,292
+2,724
+76% +$216K
PHAT icon
1916
Phathom Pharmaceuticals
PHAT
$692M
$489K ﹤0.01%
44,004
+28,719
+188% +$363K
AMBA icon
1917
Ambarella
AMBA
$3.81B
$489K ﹤0.01%
9,494
+1,191
+14% +$74.3K
GLSI icon
1918
Greenwich LifeSciences
GLSI
$211M
$489K ﹤0.01%
+20,339
New +$530K
ALRS icon
1919
Alerus Financial
ALRS
$828M
$488K ﹤0.01%
20,577
+5,500
+36% +$133K
ENLT icon
1920
Enlight Renewable Energy
ENLT
$11.9B
$488K ﹤0.01%
+7,356
New +$471K
TALK icon
1921
Talkspace
TALK
$874M
$487K ﹤0.01%
+94,107
New +$416K
BJRI icon
1922
BJ's Restaurants
BJRI
$1.48B
$487K ﹤0.01%
+13,874
New +$555K
AVT icon
1923
Avnet
AVT
$7.92B
$486K ﹤0.01%
7,893
+3,487
+79% +$207K
SEB icon
1924
Seaboard Corp
SEB
$4.06B
$486K ﹤0.01%
86
+15
+21% +$75.2K
ORIC icon
1925
Oric Pharmaceuticals
ORIC
$1.4B
$485K ﹤0.01%
38,295
-86,050
-69% -$977K
75 76
77
78 79

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State of Wisconsin Investment Board's Q1 2026 Portfolio in Review

As of Q1 2026, State of Wisconsin Investment Board held 2,643 positions worth $43.7B, down 2.3% from $44.7B the previous quarter. Its ten largest holdings account for 27% of the portfolio.

State of Wisconsin Investment Board's Q1 2026 filing shows 278 new, 1,112 increased, 954 reduced and 152 closed positions. Its largest new stake was Simplify Chinese Commodities Strategy No K-1 ETF: 4,202,200 shares worth $104M. The largest sale was Invesco S&P 500 Equal Weight ETF, an estimated $374M.

By sector, the portfolio is most concentrated in Technology at 26% of assets, down from 27% a quarter earlier, followed by Financials and Communication Services.

  • State of Wisconsin Investment Board's largest Q1 2026 buy was Simplify Chinese Commodities Strategy No K-1 ETF: 4,202,200 shares worth $104M.
  • State of Wisconsin Investment Board added most to HEICO Corp Class A in Q1 2026, an estimated $108M increase.
  • State of Wisconsin Investment Board's biggest Q1 2026 reduction was Invesco S&P 500 Equal Weight ETF, cutting an estimated $374M.
  • State of Wisconsin Investment Board fully exited State Street SPDR S&P Retail ETF in Q1 2026, selling an estimated $54M.
  • State of Wisconsin Investment Board's ten largest holdings make up 27% of its $43.7B portfolio in Q1 2026.
  • State of Wisconsin Investment Board opened 278 new positions and closed 152 in Q1 2026.
  • State of Wisconsin Investment Board's portfolio value fell 2.3% quarter-over-quarter to $43.7B.

Based on State of Wisconsin Investment Board's 13F filing for Q1 2026, filed 15 May 2026.