$BRK.B bought $53.9M of $LEN shares in late September, boosting its stake. It adds to Berkshire's $6.8B acquisition of Taylor Morrison. The backdrop: 30-year mortgage rates climbed to 7.28% as of Oct 1. Lennar is down 22% YTD vs. the S&P 500's 12% gain. Yet Lennar and $NVR trade at 16x earnings, which shows sector resilience. Seeking Alpha Quant Ratings: Lennar, Berkshire, and NVR = Hold, signaling near-term sector caution. With $365B in cash, Berkshire can fund this housing bet while others pull back. Is Buffett's team early on housing? ▻