Investor State Of Wisconsin Investment Board
13D/G Filings

This page shows a list of all the recent 13D/G filings made by State Of Wisconsin Investment Board . Schedule 13D is commonly referred to as a “beneficial ownership report.” The term "beneficial owner" is defined under SEC rules. It includes any person who directly or indirectly shares voting power or investment power (the power to sell the security).

When a person or group of persons acquires beneficial ownership of more than 5% of a voting class of a company’s equity securities, they are required to file a Schedule 13D within ten days after the purchase. Click the link icon to see the full transaction history.

Date Form Target Prev
Shares
Current
Shares
Change
(Percent)
Ownership
(Percent)
Change
(Percent)
2025-08-14 13G LBRDA / Liberty Broadband Corporation 982,934
2025-08-14 13G 1,281,057
2024-01-26 13G/A FWONA / Formula One Group 1,440,264
2024-01-26 13G/A KYG811731093 / SHUAA PARTNERS ACQUISITION CORP I 670,000 0
2023-02-13 13G/A FWONA / Formula One Group 1,429,944 1,423,114
2023-02-13 13G KYG811731093 / SHUAA PARTNERS ACQUISITION CORP I 670,000
2022-01-10 13G/A FWONA / Formula One Group 1,554,254 1,429,944
2021-02-05 13G FWONA / Formula One Group 1,554,254
2019-02-08 13G/A DISCK / Warner Bros.Discovery Inc - Series C 13,528,070 13,577,347
2018-02-09 13G DISCK / Warner Bros.Discovery Inc - Series C 13,528,070
2015-02-25 13G/A ARCB / ArcBest Corporation 1,058,678
2015-02-13 13G/A IRWD / Ironwood Pharmaceuticals, Inc. 3,728,485
2014-06-05 13G/A ESCC / Evans & Sutherland Computer Corp. 0
2014-01-29 13G IRWD / Ironwood Pharmaceuticals, Inc. 6,163,095
2014-01-28 13G ARCB / ArcBest Corporation 1,459,180
2013-04-09 13G VNM / VanEck ETF Trust - VanEck Vietnam ETF 0
2013-02-14 13G VNM / VanEck ETF Trust - VanEck Vietnam ETF 490,000
2012-02-14 13G/A AEHR / Aehr Test Systems, Inc. 0
2012-02-14 13G/A KTOS / Kratos Defense & Security Solutions, Inc. 1,716,397
2012-02-14 13G/A XCRA / Xcerra Corp 202,430
2012-02-14 13G/A PNSN / Penson Worldwide Inc 0
2012-02-14 13G/A ADEP / Adept Technology 0
2012-02-14 13G/A AERG / Applied Energetics, Inc. 0
2000-02-09 13G/A STRT / Strattec Security Corporation 440,600
2000-02-04 13G/A SGMS / Scientific Games Corporation 3,036,553
1999-02-02 13G/A STRT / Strattec Security Corporation 440,600
1999-02-02 13G/A SGMS / Scientific Games Corporation 3,036,553
1998-01-23 13G/A STRT / Strattec Security Corporation 440,600
1998-01-22 13G/A SGMS / Scientific Games Corporation 3,036,553
1997-02-03 13G/A SGMS / Scientific Games Corporation 2,810,500
1997-01-24 13G/A STRT / Strattec Security Corporation 440,600
1996-02-06 13G STRT / Strattec Security Corporation 352,600
1996-02-02 13G SGMS / Scientific Games Corporation 2,810,500