IMC Chicago’s Berkshire Hathaway Class B BRK.B Stock Holding History

IMC Chicago’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	$428M	Sell	893,200 -243,300	-21%	-$119M	0.15%	95
2025 Q4	$571M	Sell	1,136,500 -64,300	-5%	-$32M	0.21%	72
2025 Q3	$604M	Sell	1,200,800 -3,200	-0.3%	-$1.55M	0.22%	68
2025 Q2	$585M	Sell	1,204,000 -56,100	-4%	-$28.5M	0.26%	50
2025 Q1	$671M	Buy	1,260,100 +669,000	+113%	+$325M	0.38%	35
2024 Q4	$268M	Buy	591,100 +137,400	+30%	+$63.4M	0.12%	81
2024 Q3	$209M	Buy	453,700 +173,400	+62%	+$76.7M	0.11%	94
2024 Q2	$114M	Buy	280,300 +257,800	+1,146%	+$105M	0.07%	141
2024 Q1	$9.46M	Buy	+22,500	New	+$8.85M	0.01%	722

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

IMC Chicago's BRK.B Position: Q1 2026 in Review

IMC Chicago sold out of Berkshire Hathaway Class B (BRK.B) in Q1 2026, closing a stake of 55,225 shares — an estimated $27.1M sold.

IMC Chicago first reported a position in BRK.B in Q1 2019 and held it in 6 quarters. The position peaked at $27.8M in Q4 2025. 4,852 funds tracked by Wall St. Rank hold BRK.B as of Q1 2026.

IMC Chicago reported no remaining Berkshire Hathaway Class B position as of Q1 2026 after selling out during the quarter.
IMC Chicago sold 55,225 Berkshire Hathaway Class B shares in Q1 2026, an estimated $27.1M.
IMC Chicago first reported a position in Berkshire Hathaway Class B in Q1 2019 and held it in 6 quarters.
IMC Chicago's Berkshire Hathaway Class B position peaked at $27.8M in Q4 2025.
4,852 funds tracked by Wall St. Rank held Berkshire Hathaway Class B as of Q1 2026.

Based on IMC Chicago's 13F filing for Q1 2026, filed 5 May 2026.