STATE OF WISCONSIN INVESTMENT BOARD

CIK

854157

City

MADISON

State / Country

Stock

BIO — Bio-Rad Laboratories, Inc.

Top Portfolio Positions

2,288 positions · $37,287,500,173 total · as of Mar 31, 2026

Ticker	Company	Shares	Value (USD)	% of Portfolio
NVDA	Nvidia Corp Technology	13,031,252	$2,272,650,348	6.09%
AAPL	Apple Inc. Technology	7,905,859	$2,006,427,955	5.38%
MSFT	Microsoft Corp Technology	3,801,033	$1,407,028,385	3.77%
AMZN	Amazon Com Inc Consumer Cyclical	5,170,390	$1,076,837,125	2.89%
GOOGL	Alphabet Inc. Communication Services	3,128,058	$899,504,358	2.41%
AVGO	Broadcom Inc. Technology	2,456,462	$760,299,553	2.04%
META	Meta Platforms, Inc. Communication Services	1,167,125	$667,747,226	1.79%
TSLA	Tesla, Inc. Consumer Cyclical	1,514,635	$563,065,561	1.51%
JPM	Jpmorgan Chase & Co Financial Services	1,457,420	$428,714,667	1.15%
LLY	ELI LILLY & Co Healthcare	431,162	$396,569,872	1.06%

52 quarters · across all stocks

Compact Export CSV

25 of 25 shown

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-03-31	$3,644,377	13,074	-4.2%	Shares	Sole	2026-05-15
2025-12-31	$4,135,207	13,648	-14.0%	Shares	Sole	2026-02-17
2025-09-30	$4,450,350	15,872	-1.4%	Shares	Sole	2025-11-14
2025-06-30	$3,885,734	16,102	+11.1%	Shares	Sole	2025-08-14
2025-03-31	$3,529,671	14,492	-5.6%	Shares	Sole	2025-05-15
2024-12-31	$5,043,614	15,353	+29.4%	Shares	Sole	2025-02-14
2024-09-30	$3,968,453	11,861	-41.6%	Shares	Sole	2024-11-14
2024-06-30	$5,548,229	20,315	+61.3%	Shares	Sole	2024-08-14
2024-03-31	$4,356,924	12,597	-12.5%	Shares	Sole	2024-05-14
2023-12-31	$4,649,616	14,400	+22.1%	Shares	Sole	2024-02-12
2023-09-30	$4,226,842	11,792	-8.8%	Shares	Sole	2023-11-14
2023-06-30	$4,899,367	12,923	-1.0%	Shares	Sole	2023-08-14
2023-03-31	$6,254,085	13,056	+16.7%	Shares	Sole	2023-05-15
2022-12-31	$4,705,283	11,190	-15.1%	Shares	Sole	2023-02-14
2022-09-30	$5,495,819	13,175	-18.3%	Shares	Sole	2022-11-14
2022-06-30	$7,982,370	16,126	-6.9%	Shares	Sole	2022-08-15
2022-03-31	$9,753,453	17,317	-49.2%	Shares	Sole	2022-05-13
2021-12-31	$25,733,203	34,058	-17.5%	Shares	Sole	2022-02-11
2021-09-30	$30,797,291	41,286	+24.9%	Shares	Sole	2021-11-12
2021-06-30	$21,290,563	33,045	-27.3%	Shares	Sole	2021-08-12
2021-03-31	$25,953,964	45,440	-3.1%	Shares	Sole	2021-05-17
2020-12-31	$27,334,639	46,891	+2.1%	Shares	Sole	2021-02-03
2020-09-30	$23,675,593	45,931	+35.9%	Shares	Sole	2020-11-16
2020-06-30	$15,259,007	33,797	-11.3%	Shares	Sole	2020-08-12
2020-03-31	$13,359,491	38,109	—	Shares	Sole	2020-05-06
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