• Warren Buffett-led Berkshire Hathaway raised its stake in Amazon by 11% in the second quarter, bringing its total investment to more than $1 billion, according to a regulatory filing.
• The same note showed Berkshire cutting its stake in Charter Communications by 5% and bumping its ownership of US Bancorp by 2.4%.
• Berkshire has been better more on the banking sector in recent months, with the company buying more shares of JP Morgan Chase and Bank of America over the last year.
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Berkshire Hathaway boosted its stake in Amazon Wednesday to a 11% stake as the Warren Buffett-led holding company raises its bet on tech companies.

A regulatory note filed Wednesday revealed Berkshire pushed its total investment in the e-commerce giant over $1 billion. The holding company’s investment in Amazon was first made by one of Buffett’s deputies. Berkshire’s Todd Combs and Ted Weschler are the employees attributed with pushing greater investment in tech companies, Bloomberg reported.

Amazon is up about 0.8% as of 11:00 a.m. ET. Berkshire Hathaway Class B stock is up 1.2%.

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