Does Citadel Advisors own BRK/B stock?

Yes. As of its Q2 2026 13F, Citadel Advisors holds 1,085,742 shares of BRK/B (Berkshire Hathaway), worth $543.3M.

How many shares of BRK/B does Citadel Advisors own?

As of its Q2 2026 13F, Citadel Advisors holds 1,085,742 shares of BRK/B (Berkshire Hathaway).

As of its Q2 2026 13F, Citadel Advisors' BRK/B position is worth $543.3M.

In Q2 2026, Citadel Advisors reduced its BRK/B position by 107,758 shares (-9.0%).

Citadel Advisors already held BRK/B in its Q4 2018 13F, the earliest on record, and has listed it in 30 quarterly 13F filings.

Position history for CITADEL ADVISORS LLC's holdings in BERKSHIRE HATHAWAY INC DEL

Current Value

$543.3M

Current Shares

1.1M

Total Value Change

+$539.8M

Total Shares Change

+1.1M

Quarter-by-Quarter History

Quarter	Action	Shares	Change	Value	Weight	Price	Conviction
2026-Q2 Latest	Decreased	1.1M	-9.0%	$543.3M	0.1%	$500.39	0
2026-Q1	Increased	1.2M	+14.1%	$571.9M	0.1%	$479.20	36
2025-Q4	Increased	1M	+134.2%	$526M	0.1%	$502.65	51
2025-Q3	Increased	446,946	+63.4%	$224.7M	0.0%	$502.74	45
2025-Q2	Increased	273,554	+1188.2%	$132.9M	0.0%	$485.77	49
2025-Q1	Decreased	21,236	-88.4%	$11.3M	0.0%	$532.58	0
2024-Q4	Increased	183,346	+32.2%	$83.1M	0.0%	$453.28	38
2024-Q3	Decreased	138,681	-63.9%	$63.8M	0.0%	$460.26	0
2024-Q2	Increased	384,198	+12.8%	$156.3M	0.0%	$406.80	34
2024-Q1	Decreased	340,701	-7.5%	$143.3M	0.0%	$420.52	0
2023-Q4	Increased	368,129	+13.2%	$131.3M	0.0%	$356.66	34
2023-Q3	Increased	325,349	+58.4%	$114M	0.0%	$350.30	43
2023-Q2	Increased	205,364	+3911.8%	$70M	0.0%	$341.00	48
2023-Q1	Decreased	5,119	-99.4%	$1.6M	0.0%	$308.77	0
2022-Q4	Increased	807,218	+301.0%	$249.3M	0.1%	$308.90	50
2022-Q3	Increased	201,321	+1.1%	$53.8M	0.0%	$267.02	30
2022-Q2	Increased	199,186	+7.7%	$54.4M	0.0%	$273.02	32
2022-Q1	Decreased	184,933	-61.3%	$65.3M	0.0%	$352.91	0
2021-Q4	Increased	477,998	+46.3%	$142.9M	0.0%	$299.00	41
2021-Q3	Decreased	326,815	-72.8%	$89.2M	0.0%	$272.94	0
2021-Q2	Increased	1.2M	+632.4%	$334.5M	0.1%	$277.92	50
2021-Q1	Decreased	164,337	-61.5%	$42M	0.0%	$255.47	0
2020-Q4	New	426,309	-	$98.8M	0.0%	$231.87	41
2020-Q3	Exited	0	-100.0%	$0	0.0%	$212.94	0
2020-Q2	Decreased	346,162	-30.3%	$61.8M	0.0%	$178.51	0
2020-Q1	Increased	496,658	+637.4%	$90.8M	0.0%	$182.83	48
2019-Q4	Decreased	67,357	-76.0%	$15.3M	0.0%	$226.50	0
2019-Q3	Decreased	280,317	-57.7%	$58.3M	0.0%	$208.02	0
2019-Q2	Increased	663,297	+0.4%	$141.4M	0.1%	$213.17	30
2019-Q1	Increased	660,510	+3814.6%	$132.7M	0.1%	$200.89	49
2018-Q4	First report	16,873	-	$3.4M	0.0%	$204.18	0

Other major holders of BRK/B: VANGUARD GROUP INC