Who Owns BERKSHIRE HATHAWAY INC DEL (BRK.A)? -- Institutional Holders (2026-06-30)

15 institutions reported holding $1.91B of BERKSHIRE HATHAWAY INC DEL (BRK.A) in SEC 13F filings for 2026-06-30. Largest institutional holders: IMC-Chicago, LLC ($868.1M), GROUP ONE TRADING LLC ($265.9M), SIMPLEX TRADING, LLC ($241.7M), JPMORGAN CHASE & CO ($159.1M), NATIONAL BANK OF CANADA /FI/ ($157.8M). Source: SEC Form 13F.

RankInstitutionValueSharesChange
1IMC-Chicago, LLC$868.1M1.7MTrimmed
2GROUP ONE TRADING LLC$265.9M531,300Added
3SIMPLEX TRADING, LLC$241.7M483,000Trimmed
4JPMORGAN CHASE & CO$159.1M320,700Trimmed
5NATIONAL BANK OF CANADA /FI/$157.8M3,153Added
6DV Trading LLC$150.1M300,000New
7Maven Securities LTD$64.3M128,800Added
8SG Americas Securities, LLC$1.9M125,300Added
9All Terrain Financial Advisors, LLC$1.1M2,100Added
10Mosaic Advisors LLC$397,4252,100Added
11Focus Partners Wealth$300,234600New
12Miracle Mile Advisors, LLC$300,0020Hold
13Brooklands Fund Management Ltd$19,6806New
14OSAIC HOLDINGS, INC.$00Exited
15Gladius Capital Management LP$00Exited

Source: SEC Form 13F filings · as of 2026-06-30