Refer to the input text as context and select the correct relationship between 'Berkshire Hathaway' and 'Charter Communications' from the available options.
Options: developer, business division, subsidiary, owner of

(Reuters) - Warren Buffett's Berkshire Hathaway Inc on Friday said it boosted its stake in cable TV operator Charter Communications Corp, and signaled it may have another large investment planned after agreeing to buy Precision Castparts Corp in its largest-ever purchase.
owner of