Warren Buffett’s Berkshire Hathaway scooped up millions more shares of Apple and doubled down on its energy investments, while the stock market swooned in the second quarter.

The moves were made public in Berkshire’s 13F filing, which was released after the stock market closed on 15 August. Regulations require institutional investors managing more than $100m to file the form, which lays out firms’ equity holdings as of the end of the most recent quarter, as well as the size and market value of their positions.