Warren Buffett's Berkshire Hathaway (NYSE: BRK.A)(NYSE: BRK.B) recently filed its 13F form, which shows investors its latest positions. Investors often pile into stocks that Berkshire has been buying, wanting to mimic the company's moves. Here were the five biggest moves that Berkshire made last quarter (which covered the last three months of 2024), based on changes in share count.