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ESSEX INVESTMENT MANAGEMENT CO LLC

Position in BRK-B — Berkshire Hathaway Inc

CIK 201772 BOSTON, MA

Position in BRK-B

as of Jun 30, 2026 · filed Aug 6, 2026
Position Value
$38,029
+$1,610 QoQ
Shares Held
76
0.0% QoQ
Ownership
0.000%
of shares outstanding
% of Portfolio
0.01%
of 13F equity value
Holder Rank
#4,911
of 4,950 holders
Holding Since
Jun 2020
25 quarters on record
Voting authority Sole 100% Shared 0% None 0%

Common Shares in BRK-B Over Time

Shares Held

Position Value (USD)

Position in Insurance - Diversified

Financial Services · as of Jun 30, 2026

ESSEX INVESTMENT MANAGEMENT CO LLC holds $4,571,065 across 2 Insurance - Diversified names. BRK-B ranks #2 (0.8% of the industry book) .

# Ticker Company Shares Value (USD) Open
2 BRK-B
Berkshire Hathaway Inc
This page
76 $38,029

All Filings in BRK-B

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25 filing rows on record
Report Date Value (USD) Shares
2026-06-30 $38,029 76
2026-03-31 $36,419 76
2025-12-31 $38,201 76
2025-09-30 $38,208 76
2025-06-30 $36,918 76
2025-03-31 $40,476 76
2024-12-31 $34,449 76
2024-09-30 $34,979 76
2024-06-30 $30,916 76
2024-03-31 $31,959 76
2023-12-31 $27,106 76
2023-09-30 $26,622 76
2023-06-30 $25,916 76
2023-03-31 $23,466 76
2022-12-31 $23,476 76
2022-09-30 $20,293 76
2022-06-30 $20,749 76
2022-03-31 $26,821 76
2021-12-31 $22,724 76
2021-09-30 $20,743 76
2021-06-30 $21,121 76
2021-03-31 $19,415 76
2020-12-31 $17,622 76
2020-09-30 $16,183 76
2020-06-30 $13,566 76