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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
CROX icon
1001
Crocs
CROX
$6.43B
$4.82M 0.01%
58,053
-11,003
-16% -$942K
QTWO icon
1002
Q2 Holdings
QTWO
$3.95B
$4.81M 0.01%
101,620
-5,573
-5% -$314K
ALG icon
1003
Alamo Group
ALG
$2.02B
$4.8M 0.01%
29,115
-10,872
-27% -$2.05M
ATRC icon
1004
AtriCure
ATRC
$2.01B
$4.77M 0.01%
167,354
+3,155
+2% +$108K
PBF icon
1005
PBF Energy
PBF
$7.26B
$4.77M 0.01%
100,252
+37,671
+60% +$1.41M
WK icon
1006
Workiva
WK
$3.38B
$4.76M 0.01%
79,806
-27,601
-26% -$1.92M
CYTK icon
1007
Cytokinetics
CYTK
$11B
$4.75M 0.01%
72,065
+3,432
+5% +$218K
QQQ icon
1008
Invesco QQQ Trust
QQQ
$479B
$4.74M 0.01%
8,210
-7,605
-48% -$4.62M
CSTM icon
1009
Constellium
CSTM
$3.88B
$4.73M 0.01%
192,552
+95,307
+98% +$2.27M
HURN icon
1010
Huron Consulting
HURN
$2.39B
$4.72M 0.01%
37,016
-1,903
-5% -$286K
PRAX icon
1011
Praxis Precision Medicines
PRAX
$10.3B
$4.72M 0.01%
14,642
-589
-4% -$182K
HALO icon
1012
Halozyme
HALO
$10.2B
$4.72M 0.01%
72,954
-1,046
-1% -$73.7K
DRS icon
1013
Leonardo DRS
DRS
$12.1B
$4.71M 0.01%
105,902
-6,382
-6% -$269K
TARS icon
1014
Tarsus Pharmaceuticals
TARS
$2.87B
$4.71M 0.01%
67,087
+35,175
+110% +$2.46M
PTCT icon
1015
PTC Therapeutics
PTCT
$5.91B
$4.7M 0.01%
68,988
+22,213
+47% +$1.57M
ESTC icon
1016
Elastic
ESTC
$7.27B
$4.69M 0.01%
93,918
-8,838
-9% -$543K
PAYO icon
1017
Payoneer
PAYO
$2.41B
$4.69M 0.01%
971,594
-80,576
-8% -$425K
BANR icon
1018
Banner Corp
BANR
$2.4B
$4.66M 0.01%
76,745
-5,843
-7% -$362K
OLED icon
1019
Universal Display
OLED
$4.01B
$4.63M 0.01%
50,531
+5,683
+13% +$628K
PARR icon
1020
Par Pacific Holdings
PARR
$3.45B
$4.61M 0.01%
73,668
+4,728
+7% +$212K
S icon
1021
SentinelOne
S
$7.12B
$4.59M 0.01%
356,098
+15,194
+4% +$211K
BRKR icon
1022
Bruker
BRKR
$7.81B
$4.57M 0.01%
126,601
+9,220
+8% +$386K
EWZ icon
1023
iShares MSCI Brazil ETF
EWZ
$9.07B
$4.54M 0.01%
118,300
-13,900
-11% -$508K
KNSL icon
1024
Kinsale Capital Group
KNSL
$8.57B
$4.54M 0.01%
13,292
-164
-1% -$62.1K
PCTY icon
1025
Paylocity
PCTY
$8.04B
$4.53M 0.01%
41,886
-2,164
-5% -$266K
39 40
41
42 43

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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.