Question 1

Does Adage Capital Partners GP own BRK/B stock?

Accepted Answer

Yes. As of its Q2 2026 13F, Adage Capital Partners GP holds 1,615,069 shares of BRK/B (Berkshire Hathaway), worth $808.2M.

Question 2

How many shares of BRK/B does Adage Capital Partners GP own?

Accepted Answer

As of its Q2 2026 13F, Adage Capital Partners GP holds 1,615,069 shares of BRK/B (Berkshire Hathaway).

Question 3

What is Adage Capital Partners GP's BRK/B position worth?

Accepted Answer

As of its Q2 2026 13F, Adage Capital Partners GP's BRK/B position is worth $808.2M.

Question 4

Is Adage Capital Partners GP buying or selling BRK/B?

Accepted Answer

In Q2 2026, Adage Capital Partners GP reduced its BRK/B position by 62,700 shares (-3.7%).

Question 5

When did Adage Capital Partners GP first buy BRK/B?

Accepted Answer

Adage Capital Partners GP already held BRK/B in its Q4 2018 13F, the earliest on record, and has listed it in 31 quarterly 13F filings.

Quarter	Action	Shares	Change	Value	Weight	Price	Conviction
2026-Q2 Latest	Decreased	1.6M	-3.7%	$808.2M	1.1%	$500.39	0
2026-Q1	Increased	1.7M	+2.1%	$804M	1.2%	$479.20	51
2025-Q4	Decreased	1.6M	-0.1%	$826.1M	1.3%	$502.65	0
2025-Q3	Decreased	1.6M	-1.0%	$827.2M	1.3%	$502.74	0
2025-Q2	Increased	1.7M	+4.7%	$807.2M	1.4%	$485.77	52
2025-Q1	Decreased	1.6M	-13.4%	$845.5M	1.6%	$532.58	0
2024-Q4	Increased	1.8M	+5.1%	$830.6M	1.5%	$453.28	53
2024-Q3	Decreased	1.7M	-2.9%	$802.4M	1.4%	$460.26	0
2024-Q2	Decreased	1.8M	-0.6%	$730.2M	1.4%	$406.80	0
2024-Q1	Decreased	1.8M	-3.0%	$759.8M	1.4%	$420.52	0
2023-Q4	Increased	1.9M	+11.8%	$664.6M	1.4%	$356.66	56
2023-Q3	Decreased	1.7M	-1.1%	$583.6M	1.3%	$350.30	0
2023-Q2	Decreased	1.7M	-5.5%	$574.4M	1.2%	$341.00	0
2023-Q1	Increased	1.8M	+1.6%	$550.7M	1.2%	$308.77	50
2022-Q4	Decreased	1.8M	-3.5%	$542.3M	1.3%	$308.90	0
2022-Q3	Increased	1.8M	+1.1%	$486M	1.2%	$267.02	50
2022-Q2	Decreased	1.8M	-0.9%	$491.5M	1.1%	$273.02	0
2022-Q1	Increased	1.8M	+7.7%	$640.9M	1.2%	$352.91	54
2021-Q4	Decreased	1.7M	-2.4%	$504.3M	0.9%	$299.00	0
2021-Q3	Decreased	1.7M	-0.5%	$471.8M	0.9%	$272.94	0
2021-Q2	Decreased	1.7M	-4.1%	$482.8M	0.9%	$277.92	0
2021-Q1	Increased	1.8M	+2.5%	$462.8M	0.9%	$255.47	45
2020-Q4	Decreased	1.8M	-12.6%	$409.6M	0.9%	$231.87	0
2020-Q3	Increased	2M	+18.7%	$430.2M	1.1%	$212.94	58
2020-Q2	Decreased	1.7M	-17.0%	$303.9M	0.8%	$178.51	0
2020-Q1	Decreased	2.1M	-8.9%	$374.8M	1.1%	$182.83	0
2019-Q4	Increased	2.3M	+0.3%	$510M	1.3%	$226.50	49
2019-Q3	Decreased	2.2M	-0.8%	$466.9M	1.1%	$208.02	0
2019-Q2	Decreased	2.3M	-2.5%	$482.1M	1.2%	$213.17	0
2019-Q1	Increased	2.3M	+1.0%	$465.7M	1.2%	$200.89	50
2018-Q4	First report	2.3M	-	$468.6M	1.3%	$204.18	0

BRK/B31 quarters

BRK/B
31 quarters