Warren Buffett’s biggest mistake might be dumping Disney — twice — and missing out on $20 billion

Warren Buffett’s biggest mistake might be dumping Disney — twice.The investing guru bought a 5% stake from Walt Disney in 1966, and received a 3.6% stake after Disney bought Capital Cities/ABC — one of Berkshire Hathaway’s key holdings — 30 years later. Source: Warren Buffett’s biggest mistake might be dumping...