Mainstream Capital Management LLC Berkshire Hathaway Inc Class B Transaction History

Mainstream Capital Management LLC

$138 Billion
Q2 2025

A detailed history of Mainstream Capital Management LLC transactions in Berkshire Hathaway Inc Class B stock. As of the latest transaction made, Mainstream Capital Management LLC holds 5,296 shares of BRK-B stock, worth $2.57 Million. This represents 1.87% of its overall portfolio holdings.

Number of Shares

5,296

Previous 5,389 1.73%

Holding current value

$2.57 Million

Previous $2.87 Billion 10.36%

% of portfolio

1.87%

Previous 2.27%

4 transactions

Quarter	Operation	Price Per share	shares change	shares Held
Q2 2025 Jul 15, 2025	SELL	$483.48 - $539.8 $44,963 - $50,201	-93 Reduced 1.73%	5,296 $2.57 Billion
Q1 2025 Apr 28, 2025	BUY	$442.66 - $534.52 $63,300 - $76,436	143 Added 2.73%	5,389 $2.87 Billion
Q4 2024 Feb 06, 2025	BUY	$442.29 - $483.08 $28,748 - $31,400	65 Added 1.25%	5,246 $2.38 Billion
Q3 2024 Oct 31, 2024	BUY	$405.19 - $478.57 $2.1 Million - $2.48 Million	5,181 New	5,181 $2.38 Billion

Others Institutions Holding BRK-B

# of Institutions

4,974

Shares Held

900M

Call Options Held

19M

Put Options Held

12.1M

View Full List

About BERKSHIRE HATHAWAY INC - Class B

Ticker BRK-B
Exchange NYSE
Sector Financial Services
Industry Insurance—Diversified
Shares Outstandng 1,301,129,984
Market Cap $631B

More about BRK-B

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Mainstream Capital Management LLC Berkshire Hathaway Inc Class B Transaction History