Berkshire Hathaway bought $193M of Lennar in 2 days. The stock is still 41% under its high. What am I missing?

Berkshire Hathaway and Warren Buffett, as 10% owners of Lennar, bought $193M of the stock across 15 purchases on Oct 1 and Oct 2, at an average of $79.65.

Lennar closed at $77.4 on Oct 6, up 4% on the day, and it is 41% under its 52-week high. It trades below both its 50 day ($83.36) and 200 day ($93.88) averages.

Numbers I looked at: 14.5x last year's earnings, 15.7x next year's expected earnings, a 4% profit margin and a 6% return on equity.

AQR also added to its position in its latest fund filing ($184M).

My read is that Lennar is cheap against its own past but not cheap on margin.

At a 4% margin, a small change in prices moves earnings a lot.

What I can't tell from the numbers is what the market is already pricing in.

Does lennar seem appealing at these levels?