State of Wisconsin Investment Board
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State of Wisconsin Investment Board’s Innospec IOSP Stock Holding History

State of Wisconsin Investment Board’s Portfolio IOSP Stock Details IOSP Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2025
Q4 		– Sell
-2,920
Closed -$225K – 2472
2025
Q3 		$225K Sell
2,920
-6,672
-70% -$557K ﹤0.01% 2221
2025
Q2 		$807K Buy
9,592
+6,937
+261% +$607K ﹤0.01% 1663
2025
Q1 		$252K Buy
2,655
+340
+15% +$36K ﹤0.01% 2036
2024
Q4 		$255K Buy
2,315
+188
+9% +$21.5K ﹤0.01% 2070
2024
Q3 		$241K Hold
2,127
– – ﹤0.01% 2117
2024
Q2 		$263K Buy
2,127
+156
+8% +$19.5K ﹤0.01% 2069
2024
Q1 		$254K Sell
1,971
-387
-16% -$47K ﹤0.01% 2004
2023
Q4 		$291K Sell
2,358
-350
-13% -$37.3K ﹤0.01% 2032
2023
Q3 		$277K Buy
+2,708
New +$283K ﹤0.01% 2093
2023
Q2 		– Sell
-3,118
Closed -$320K – 2435
2023
Q1 		$320K Buy
3,118
+29
+0.9% +$3.12K ﹤0.01% 2065
2022
Q4 		$318K Sell
3,089
-1,536
-33% -$156K ﹤0.01% 2081
2022
Q3 		$396K Sell
4,625
-1,581
-25% -$149K ﹤0.01% 2082
2022
Q2 		$594K Buy
+6,206
New +$603K ﹤0.01% 1988
2021
Q4 		– Sell
-26,200
Closed -$2.21M – 2181
2021
Q3 		$2.21M Sell
26,200
-54,200
-67% -$4.83M ﹤0.01% 1259
2021
Q2 		$7.29M Hold
80,400
– – 0.02% 910
2021
Q1 		$8.26M Hold
80,400
– – 0.02% 832
2020
Q4 		$7.29M Sell
80,400
-10,000
-11% -$775K 0.02% 833
2020
Q3 		$5.72M Hold
90,400
– – 0.01% 888
2020
Q2 		$6.98M Buy
+90,400
New +$6.61M 0.02% 757

Other funds holding IOSP

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Vanguard Group
Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return
Allspring Global Investments
Allspring Global Investments Charlotte, North Carolina $59.7B AUM 29.08% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $481B AUM 30.42% 1-Year Est. Return
Victory Capital Management
Victory Capital Management San Antonio, Texas $178B AUM 37.23% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return
Millennium Management
Millennium Management New York $240B AUM 35.51% 1-Year Est. Return
N
Nuveen Charlotte, North Carolina $369B AUM 31.66% 1-Year Est. Return
WHG
Westwood Holdings Group Dallas, Texas $13.7B AUM 21.48% 1-Year Est. Return

State of Wisconsin Investment Board's IOSP Position: Q4 2025 in Review

State of Wisconsin Investment Board sold out of Innospec (IOSP) in Q4 2025, closing a stake of 2,920 shares — an estimated $225K sold.

State of Wisconsin Investment Board first reported a position in IOSP in Q2 2020 and held it in 19 quarters. The position peaked at $8.26M in Q1 2021. 260 funds tracked by Wall St. Rank hold IOSP as of Q4 2025.

  • State of Wisconsin Investment Board reported no remaining Innospec position as of Q4 2025 after selling out during the quarter.
  • State of Wisconsin Investment Board sold 2,920 Innospec shares in Q4 2025, an estimated $225K.
  • State of Wisconsin Investment Board first reported a position in Innospec in Q2 2020 and held it in 19 quarters.
  • State of Wisconsin Investment Board's Innospec position peaked at $8.26M in Q1 2021.
  • 260 funds tracked by Wall St. Rank held Innospec as of Q4 2025.

Based on State of Wisconsin Investment Board's 13F filing for Q4 2025, filed 17 Feb 2026.