Does Calamos Advisors own BRK/B stock?

Yes. As of its Q3 2026 13F, Calamos Advisors holds 257,641 shares of BRK/B (Berkshire Hathaway), worth $128.3M.

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

As of its Q3 2026 13F, Calamos Advisors holds 257,641 shares of BRK/B (Berkshire Hathaway).

What is Calamos Advisors' BRK/B position worth?

As of its Q3 2026 13F, Calamos Advisors' BRK/B position is worth $128.3M.

Is Calamos Advisors buying or selling BRK/B?

In Q3 2026, Calamos Advisors increased its BRK/B position by 5,211 shares (+2.1%).

When did Calamos Advisors first buy BRK/B?

Calamos Advisors already held BRK/B in its Q1 2019 13F, the earliest on record, and has listed it in 31 quarterly 13F filings.

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Calamos Advisors LLC

BRK/B

31 quarters

Position history for Calamos Advisors LLC's holdings in Berkshire Hathaway Inc.

Current Value

$128.3M

Current Shares

257,641

Total Value Change

+$46.5M

Total Shares Change

-149,319

Quarter-by-Quarter History

Quarter	Action	Shares	Change	Value	Weight	Price	Conviction
2026-Q3 Latest	Increased	257,641	+2.1%	$128.3M	0.4%	$497.95	37
2026-Q2	Decreased	252,430	-7.8%	$126.3M	0.4%	$500.39	0
2026-Q1	Increased	273,861	+6.5%	$131.2M	0.5%	$479.20	39
2025-Q4	Decreased	257,121	-3.9%	$129.2M	0.5%	$502.65	0
2025-Q3	Decreased	267,559	-14.9%	$134.5M	0.5%	$502.74	0
2025-Q2	Increased	314,495	+8.9%	$152.8M	0.6%	$485.77	47
2025-Q1	Increased	288,887	+9.2%	$153.9M	0.7%	$532.58	47
2024-Q4	Unchanged	264,545	0.0%	$119.9M	0.5%	$453.28	0
2024-Q3	Decreased	264,545	-2.4%	$121.8M	0.5%	$460.26	0
2024-Q2	Decreased	271,035	-3.6%	$110.3M	0.5%	$406.80	0
2024-Q1	Decreased	281,272	-2.3%	$118.3M	0.6%	$420.52	0
2023-Q4	Decreased	287,962	-1.3%	$102.7M	0.5%	$356.66	0
2023-Q3	Unchanged	291,723	0.0%	$102.2M	0.5%	$350.30	0
2023-Q2	Unchanged	291,723	0.0%	$99.5M	0.5%	$341.00	0
2023-Q1	Decreased	291,723	-11.1%	$90.1M	0.4%	$308.77	0
2022-Q4	Decreased	328,192	-15.4%	$101.4M	0.5%	$308.90	0
2022-Q3	Unchanged	388,048	0.0%	$103.6M	0.5%	$267.02	0
2022-Q2	Increased	388,048	+3.3%	$105.9M	0.5%	$273.02	37
2022-Q1	Increased	375,818	+15.4%	$132.6M	0.5%	$352.91	41
2021-Q4	Decreased	325,728	-15.1%	$97.4M	0.4%	$299.00	0
2021-Q3	Increased	383,608	+9.7%	$104.7M	0.5%	$272.94	39
2021-Q2	Increased	349,759	+29.4%	$97.2M	0.4%	$277.92	45
2021-Q1	Increased	270,207	+3.2%	$69M	0.4%	$255.47	37
2020-Q4	Decreased	261,857	-4.2%	$60.7M	0.4%	$231.87	0
2020-Q3	Decreased	273,198	-8.1%	$58.2M	0.4%	$212.94	0
2020-Q2	Decreased	297,175	-17.1%	$53M	0.4%	$178.51	0
2020-Q1	Decreased	358,435	-17.8%	$65.5M	0.5%	$182.83	0
2019-Q4	Decreased	435,905	-1.3%	$98.7M	0.5%	$226.50	0
2019-Q3	Increased	441,526	+7.3%	$91.8M	0.5%	$208.02	45
2019-Q2	Increased	411,468	+1.1%	$87.7M	0.5%	$213.17	36
2019-Q1	First report	406,960	-	$81.8M	0.5%	$200.89	0

Other major holders of BRK/B: Vanguard Group Inc.