State of Wisconsin Investment Board
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State of Wisconsin Investment Board’s Koppers KOP Stock Holding History

State of Wisconsin Investment Board’s Portfolio KOP Stock Details KOP Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q1 		$1.31M Buy
33,744
+16,326
+94% +$546K ﹤0.01% 1572
2025
Q4 		$472K Sell
17,418
-23,147
-57% -$647K ﹤0.01% 1979
2025
Q3 		$1.14M Sell
40,565
-14,000
-26% -$431K ﹤0.01% 1567
2025
Q2 		$1.75M Buy
54,565
+36,853
+208% +$1.06M ﹤0.01% 1359
2025
Q1 		$496K Buy
+17,712
New +$533K ﹤0.01% 1762
2024
Q3 		– Sell
-15,016
Closed -$555K – 2325
2024
Q2 		$555K Buy
15,016
+576
+4% +$26.9K ﹤0.01% 1774
2024
Q1 		$797K Buy
14,440
+5,161
+56% +$267K ﹤0.01% 1506
2023
Q4 		$475K Sell
9,279
-6,659
-42% -$278K ﹤0.01% 1777
2023
Q3 		$630K Buy
15,938
+2,894
+22% +$109K ﹤0.01% 1609
2023
Q2 		$445K Sell
13,044
-7,088
-35% -$231K ﹤0.01% 1863
2023
Q1 		$704K Sell
20,132
-11,673
-37% -$388K ﹤0.01% 1675
2022
Q4 		$897K Sell
31,805
-1,339
-4% -$36.1K ﹤0.01% 1550
2022
Q3 		$689K Sell
33,144
-1,152
-3% -$26.5K ﹤0.01% 1782
2022
Q2 		$776K Buy
34,296
+17,096
+99% +$433K ﹤0.01% 1813
2022
Q1 		$473K Buy
+17,200
New +$508K ﹤0.01% 1951
2021
Q1 		– Sell
-9,500
Closed -$296K – 2063
2020
Q4 		$296K Sell
9,500
-6,000
-39% -$156K ﹤0.01% 1864
2020
Q3 		$324K Buy
+15,500
New +$352K ﹤0.01% 1756
2014
Q1 		– Sell
-10,370
Closed -$474K – 1344
2013
Q4 		$474K Sell
10,370
-80,130
-89% -$3.63M ﹤0.01% 1293
2013
Q3 		$3.86M Hold
90,500
– – 0.02% 856
2013
Q2 		$3.46M Buy
+90,500
New +$3.76M 0.01% 901

Other funds holding KOP

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Pzena Investment Management
Pzena Investment Management New York $30.8B AUM 11.29% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $481B AUM 30.42% 1-Year Est. Return
Fuller & Thaler Asset Management
Fuller & Thaler Asset Management San Mateo, California $29.7B AUM 43.33% 1-Year Est. Return
SCM
Simcoe Capital Management New York $576M AUM 36.22% 1-Year Est. Return
LSV Asset Management
LSV Asset Management Chicago, Illinois $55.1B AUM 45.38% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
American Century Companies
American Century Companies Kansas City, Missouri $194B AUM 35% 1-Year Est. Return
VPM
Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM

State of Wisconsin Investment Board's KOP Position: Q1 2026 in Review

State of Wisconsin Investment Board increased its Koppers (KOP) stake by 94% in Q1 2026, buying an estimated $546K and bringing the position to 33,744 shares worth $1.31M. The position accounts for ﹤0.01% of the portfolio, ranked #1572.

State of Wisconsin Investment Board first reported a position in KOP in Q2 2013 and has held it in 20 quarters since. The position peaked at $3.86M in Q3 2013. 204 funds tracked by Wall St. Rank hold KOP as of Q1 2026.

  • State of Wisconsin Investment Board held 33,744 shares of Koppers worth $1.31M as of Q1 2026.
  • State of Wisconsin Investment Board bought 16,326 Koppers shares in Q1 2026, an estimated $546K.
  • Koppers made up ﹤0.01% of State of Wisconsin Investment Board's portfolio in Q1 2026, its #1572 holding.
  • State of Wisconsin Investment Board first reported a position in Koppers in Q2 2013 and has held it in 20 quarters since.
  • State of Wisconsin Investment Board's Koppers position peaked at $3.86M in Q3 2013.
  • 204 funds tracked by Wall St. Rank held Koppers as of Q1 2026.

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