CenterBook Partners LP

Position in BRK-B — Berkshire Hathaway Inc

CIK 1872738 GREENWICH, CT

Position in BRK-B

as of Jun 30, 2026 · filed Aug 11, 2026 Compact

Position Value

$28,136,429

+$4,597,167 QoQ

Shares Held

56,229

+14.5% QoQ

Ownership

0.004%

of shares outstanding

% of Portfolio

1.39%

of 13F equity value

Holder Rank

#774

of 4,965 holders

Holding Since

Dec 2021

18 quarters on record

Voting authority Sole 100% Shared 0% None 0%

Financial Services · as of Jun 30, 2026

CenterBook Partners LP holds $29,412,750 across 3 Insurance - Diversified names. BRK-B ranks #1 (95.7% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	BRK-B	Berkshire Hathaway Inc This page	56,229	$28,136,429
2	AIG	American International Group, Inc.	12,038	$897,192
3	PLGO	Pelagos Insurance Capital Ltd	15,570	$379,129

18 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-06-30	$28,136,429	56,229	+14.5%	Shares	Sole	2026-08-11
2026-03-31	$23,539,262	49,122	+1.5%	Shares	Sole	2026-05-05
2025-12-31	$24,315,191	48,374	+2.2%	Shares	Sole	2026-02-11
2025-09-30	$23,802,225	47,345	-33.4%	Shares	Sole	2025-11-07
2025-06-30	$34,514,930	71,052	+46.3%	Shares	Sole	2025-08-12
2025-03-31	$25,857,824	48,552	-33.6%	Shares	Sole	2025-05-09
2024-12-31	$33,128,875	73,087	+23.1%	Shares	Sole	2025-02-13
2024-09-30	$27,330,699	59,381	+1203.6%	Shares	Sole	2024-11-14
2024-03-31	$1,915,468	4,555	+71.0%	Shares	Sole	2024-05-10
2023-12-31	$950,142	2,664	-62.7%	Shares	Sole	2024-02-13
2023-09-30	$2,502,893	7,145	-22.1%	Shares	Sole	2023-11-13
2023-06-30	$3,128,334	9,174	-9.5%	Shares	Sole	2023-08-14
2023-03-31	$3,131,236	10,141	-20.8%	Shares	Sole	2023-05-15
2022-12-31	$3,954,228	12,801	-28.7%	Shares	Sole	2023-02-13
2022-09-30	$4,793,276	17,951	+10.1%	Shares	Sole	2022-11-14
2022-06-30	$4,452,137	16,307	+955.5%	Shares	Sole	2022-08-15
2022-03-31	$545,245	1,545	-38.4%	Shares	Sole	2022-05-16
2021-12-31	$749,593	2,507	—	Shares	Sole	2022-02-11
No filing history on record for this holder in this stock.