Historical shareholding details of Citadel Investment Advisory, Inc. holdings in Berkshire Hathaway Inc. - Ordinary Shares - Class B (BRK.B)

Monthly changes of Citadel Investment Advisory, Inc. shareholding in Berkshire Hathaway Inc. - Ordinary Shares - Class B over the previous months

Month	Name	Total no. shares held	Percent Holding
Month	Name	Total no. shares held	Percent Holding
Jun 30, 2025	Citadel Investment Advisory, Inc.	105,415	0.00%
Jun 30, 2025	Citadel Advisors Llc	273,554	0.01%

Mar 31, 2025	Citadel Advisors Llc	21,236	0.00%
Mar 31, 2025	Citadel Investment Advisory, Inc.	109,270	0.01%

Dec 31, 2024	Citadel Advisors Llc	183,346	0.01%
Dec 31, 2024	Citadel Investment Advisory, Inc.	109,355	0.01%

Sep 30, 2024	Citadel Advisors Llc	138,681	0.01%
Sep 30, 2024	Citadel Investment Advisory, Inc.	109,017	0.01%

Jun 30, 2024	Citadel Advisors Llc	384,198	0.02%
Jun 30, 2024	Citadel Investment Advisory, Inc.	107,719	0.01%

Mar 31, 2024	Citadel Investment Advisory, Inc.	107,729	0.01%

Dec 31, 2023	Citadel Investment Advisory, Inc.	107,844	0.01%

Sep 30, 2023	Citadel Advisors Llc	325,349	0.02%
Sep 30, 2023	Citadel Investment Advisory, Inc.	107,905	0.00%

Jun 30, 2023	Citadel Advisors Llc	205,364	0.01%
Jun 30, 2023	Citadel Investment Advisory, Inc.	107,905	0.00%

Mar 31, 2023	Citadel Investment Advisory, Inc.	108,220	0.00%
Mar 31, 2023	Citadel Advisors Llc	5,119	0.00%

Dec 31, 2022	Citadel Investment Advisory, Inc.	108,597	0.00%