State of Wisconsin Investment Board
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State of Wisconsin Investment Board’s Mine Safety MSA Stock Holding History

State of Wisconsin Investment Board’s Portfolio MSA Stock Details MSA Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q1 		$591K Buy
3,607
+1,571
+77% +$287K ﹤0.01% 1912
2025
Q4 		$326K Sell
2,036
-1,491
-42% -$243K ﹤0.01% 2136
2025
Q3 		$607K Buy
3,527
+4
+0.1% +$691 ﹤0.01% 1793
2025
Q2 		$590K Sell
3,523
-583
-14% -$91.2K ﹤0.01% 1791
2025
Q1 		$602K Buy
4,106
+588
+17% +$93.7K ﹤0.01% 1679
2024
Q4 		$583K Buy
3,518
+442
+14% +$75.8K ﹤0.01% 1740
2024
Q3 		$545K Sell
3,076
-94
-3% -$17.1K ﹤0.01% 1828
2024
Q2 		$595K Buy
3,170
+215
+7% +$40K ﹤0.01% 1742
2024
Q1 		$572K Sell
2,955
-1,085
-27% -$191K ﹤0.01% 1671
2023
Q4 		$682K Sell
4,040
-477
-11% -$77.6K ﹤0.01% 1537
2023
Q3 		$712K Buy
4,517
+1,572
+53% +$270K ﹤0.01% 1539
2023
Q2 		$512K Sell
2,945
-1,745
-37% -$250K ﹤0.01% 1814
2023
Q1 		$626K Buy
4,690
+57
+1% +$7.68K ﹤0.01% 1754
2022
Q4 		$668K Sell
4,633
-2,293
-33% -$300K ﹤0.01% 1764
2022
Q3 		$757K Sell
6,926
-2,404
-26% -$296K ﹤0.01% 1702
2022
Q2 		$1.13M Buy
9,330
+6,678
+252% +$830K ﹤0.01% 1570
2022
Q1 		$352K Sell
2,652
-1,806
-41% -$249K ﹤0.01% 2055
2021
Q4 		$673K Sell
4,458
-137
-3% -$20.6K ﹤0.01% 1576
2021
Q3 		$669K Buy
4,595
+218
+5% +$34.6K ﹤0.01% 1588
2021
Q2 		$725K Sell
4,377
-238
-5% -$38.6K ﹤0.01% 1566
2021
Q1 		$692K Sell
4,615
-75
-2% -$12.1K ﹤0.01% 1474
2020
Q4 		$701K Sell
4,690
-180
-4% -$26K ﹤0.01% 1430
2020
Q3 		$653K Buy
4,870
+90
+2% +$11K ﹤0.01% 1397
2020
Q2 		$547K Buy
+4,780
New +$531K ﹤0.01% 1404

Other funds holding MSA

BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
VPM
Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM
RCG
Ruane, Cunniff & Goldfarb New York $6.03B AUM 12.06% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
APG Asset Management
APG Asset Management Amsterdam, Netherlands $31.6B AUM 19.33% 1-Year Est. Return
CB
Cooke & Bieler Philadelphia, Pennsylvania $8.65B AUM 9.66% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $481B AUM 30.42% 1-Year Est. Return
JP Morgan Chase
JP Morgan Chase New York $1.56T AUM 27.86% 1-Year Est. Return
MGP
M&G plc London, United Kingdom $20.1B AUM 16.62% 1-Year Est. Return

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

State of Wisconsin Investment Board increased its Mine Safety (MSA) stake by 77% in Q1 2026, buying an estimated $287K and bringing the position to 3,607 shares worth $591K. The position accounts for ﹤0.01% of the portfolio, ranked #1912.

State of Wisconsin Investment Board first reported a position in MSA in Q2 2020 and has held it in 24 quarters since. The position peaked at $1.13M in Q2 2022. 448 funds tracked by Wall St. Rank hold MSA as of Q1 2026.

  • State of Wisconsin Investment Board held 3,607 shares of Mine Safety worth $591K as of Q1 2026.
  • State of Wisconsin Investment Board bought 1,571 Mine Safety shares in Q1 2026, an estimated $287K.
  • Mine Safety made up ﹤0.01% of State of Wisconsin Investment Board's portfolio in Q1 2026, its #1912 holding.
  • State of Wisconsin Investment Board first reported a position in Mine Safety in Q2 2020 and has held it in 24 quarters since.
  • State of Wisconsin Investment Board's Mine Safety position peaked at $1.13M in Q2 2022.
  • 448 funds tracked by Wall St. Rank held Mine Safety as of Q1 2026.

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