Qube Research & Technologies (QRT)’s Berkshire Hathaway Class B BRK.B Stock Holding History

Qube Research & Technologies (QRT)’s Portfolio BRK.B Stock Details BRK.B Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q1	$42M	Sell	87,600 -128,200	-59%	-$62.9M	0.05%	499
2025 Q4	$108M	Buy	215,800 +67,500	+46%	+$33.6M	0.11%	221
2025 Q3	$74.6M	Sell	148,300 -83,000	-36%	-$40.2M	0.08%	326
2025 Q2	$112M	Buy	231,300 +106,800	+86%	+$54.2M	0.11%	222
2025 Q1	$66.3M	Buy	124,500 +500	+0.4%	+$243K	0.08%	320
2024 Q4	$56.2M	Buy	124,000 +78,000	+170%	+$36M	0.07%	336
2024 Q3	$21.2M	Buy	46,000 +31,000	+207%	+$13.7M	0.03%	648
2024 Q2	$6.1M	Buy	+15,000	New	+$6.13M	0.01%	1173
2024 Q1	–	Sell	-36,300	Closed	-$12.9M	–	4478
2023 Q4	$12.9M	Buy	36,300 +4,500	+14%	+$1.58M	0.03%	640
2023 Q3	$11.1M	Buy	+31,800	New	+$11.3M	0.03%	609
2023 Q1	–	Sell	-45,000	Closed	-$13.9M	–	2559
2022 Q4	$13.9M	Hold	45,000	–	–	0.07%	379
2022 Q3	$12M	Buy	+45,000	New	+$12.8M	0.07%	363

Other funds holding BRK.B

BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return

VCM

Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM

State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return

Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return

Morgan Stanley New York $1.66T AUM 25.57% 1-Year Est. Return

VPM

Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM

Gates Foundation Trust Kirkland, Washington $31.7B AUM 20.52% 1-Year Est. Return

JP Morgan Chase New York $1.56T AUM 27.86% 1-Year Est. Return

Northern Trust Chicago, Illinois $757B AUM 28.64% 1-Year Est. Return

Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return

Qube Research & Technologies (QRT)'s BRK.B Position: Q1 2026 in Review

Qube Research & Technologies (QRT) reduced its Berkshire Hathaway Class B (BRK.B) stake by 64% in Q1 2026, selling an estimated $240M and leaving 271,539 shares worth $130M. The position accounts for 0.14% of the portfolio, ranked #163.

Qube Research & Technologies (QRT) first reported a position in BRK.B in Q1 2018 and has held it in 28 quarters since. The position peaked at $392M in Q2 2024. 4,854 funds tracked by Wall St. Rank hold BRK.B as of Q1 2026.

Qube Research & Technologies (QRT) held 271,539 shares of Berkshire Hathaway Class B worth $130M as of Q1 2026.
Qube Research & Technologies (QRT) sold 488,478 Berkshire Hathaway Class B shares in Q1 2026, an estimated $240M.
Berkshire Hathaway Class B made up 0.14% of Qube Research & Technologies (QRT)'s portfolio in Q1 2026, its #163 holding.
Qube Research & Technologies (QRT) first reported a position in Berkshire Hathaway Class B in Q1 2018 and has held it in 28 quarters since.
Qube Research & Technologies (QRT)'s Berkshire Hathaway Class B position peaked at $392M in Q2 2024.
4,854 funds tracked by Wall St. Rank held Berkshire Hathaway Class B as of Q1 2026.

Based on Qube Research & Technologies (QRT)'s 13F filing for Q1 2026, filed 15 May 2026.